DECTRON INTERNATIONALE INC
SB-2/A, 1998-08-26
AIR-COND & WARM AIR HEATG EQUIP & COMM & INDL REFRIG EQUIP
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<PAGE>
   
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON AUGUST 26, 1998
    
 
   
                                            REGISTRATION STATEMENT NO. 333-59285
    
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
   
                    U.S. SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                AMENDMENT NO. 1
                                       TO
                                   FORM SB-2
    
 
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
                          DECTRON INTERNATIONALE INC.
          (Name of small business issuer as specified in its charter)
                         ------------------------------
 
<TABLE>
<S>                                       <C>                                       <C>
                 CANADA                                     1711                                      N/A
    (State or other jurisdiction of             (Primary Standard Industrial                (IRS Employer I.D. No.)
     incorporation or organization)             Classification Code Number)
</TABLE>
 
                            ------------------------
 
                           NESS LAKDAWALA, PRESIDENT
                               4300 POIRIER BLVD.
                            MONTREAL, QUEBEC H4R 2C5
                                 (514) 334-9609
 
(Address and telephone number of principal executive offices and principal place
                                  of business)
                         ------------------------------
 
                             ARTHUR S. MARCUS, ESQ.
                          GERSTEN, SAVAGE, KAPLOWITZ &
                                FREDERICKS, LLP
                              101 EAST 52ND STREET
                            NEW YORK, NEW YORK 10022
                                 (212) 752-9700
           (Name, address and telephone number of agent for service)
                         ------------------------------
 
                                   Copies to:
 
<TABLE>
<S>                                          <C>
          JAY M. KAPLOWITZ, ESQ.                       GREGORY SICHENZIA, ESQ.
          Arthur S. Marcus, Esq.                      Richard A. Friedman, Esq.
        GERSTEN, SAVAGE, KAPLOWITZ                 SICHENZIA, ROSS & FRIEDMAN LLP
             & FREDERICKS, LLP                          135 West 50th Street
      101 East 52nd Street, 9th floor                 New York, New York 10020
         New York, New York 10022                          (212) 664-1200
              (212) 752-9700                            (212) 664-7329 (fax)
           (212) 752-9713 (fax)
</TABLE>
 
                            ------------------------
 
    APPROXIMATE DATE OF PROPOSED SALE TO THE PUBLIC: As soon as practicable
after the effective date of this Registration Statement. If this Form is filed
to register additional securities for an offering pursuant to Rule 462(b) under
the Securities Act, please check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. If this Form is a post-effective amendment filed pursuant
to Rule 462(c) under the Securities Act, check the following box and list the
Securities Act registration statement number of the earlier effective
registration statement for the same offering. If this Form is a post-effective
amendment filed pursuant to Rule 462(d) under the Securities Act, check the
following box and list the Securities Act registration statement number of the
earlier effective registration statement for the same offering. If delivery of
the prospectus is expected to be made pursuant to Rule 434, please check the
following box. If any of the securities being registered on this Form are to be
offered on a delayed or continuous basis pursuant to Rule 415 under the
Securities Act of 1933, check the following box: [x]
 
    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OF 1933, OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE SECURITIES AND EXCHANGE COMMISSION, ACTING
PURSUANT TO SAID SECTION 8(A), MAY DETERMINE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                        CALCULATION OF REGISTRATION FEE
 
   
<TABLE>
<CAPTION>
                                                                            PROPOSED
                                                                            MAXIMUM             PROPOSED           AMOUNT OF
             TITLE OF EACH CLASS OF                   AMOUNT BEING       OFFERING PRICE         MAXIMUM           REGISTRATION
           SECURITIES BEING REGISTERED                 REGISTERED       PER SECURITY(1)      OFFERING PRICE           FEE
<S>                                                <C>                 <C>                 <C>                 <C>
Common Stock, no par value.......................     1,150,000(2)           $8.00             $9,200,000            $2,714
Common Stock Purchase Warrants...................     1,150,000(3)           $.125              $143,750             $42.41
Common Stock issuable upon exercise of
  Warrants.......................................     1,150,000(4)           $9.20            $10,580,000          $3,121.10
Underwriters' Warrants...........................       100,000              $.001              $100 (5)
Common Stock Issuable on Exercise of
  Underwriters' Warrants.........................       100,000              $13.20            $1,320,000           $389.40
Warrants Issuable upon Exercise of Underwriters'
  Warrants.......................................       100,000             $.20625             $20,625              $6.08
Common Stock Issuable on Exercise of the Warrants
  in the Underwriter's Warrant...................      100,000(4)            $9.20              $920,000            $271.40
      Total:.....................................                                                                 $6,544.39(6)
</TABLE>
    
 
(1) Estimated solely for the purpose of calculating the registration fee
    pursuant to Rule 457 promulgated under the Securities Act of 1933, as
    amended.
 
(2) Includes up to 150,000 shares of Common Stock issuable upon exercise of the
    Underwriters' over- allotment option.
 
(3) Includes up to 150,000 Warrants issuable upon exercise of the Underwriters'
    over-allotment option.
 
(4) Pursuant to Rule 416, this Registration Statement also covers an
    indeterminable number of additional shares of Common Stock issuable as a
    result of any future anti-dilution adjustments in accordance with the terms
    of the Warrants.
 
(5) No fee due pursuant to Rule 457(g).
 
   
(6) $6,424.55 previously paid.
    
<PAGE>
   
                  SUBJECT TO COMPLETION, DATED AUGUST 26, 1998
    
INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A
REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT BECOMES
EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE SECURITIES
IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.
<PAGE>
PROSPECTUS
 
                          DECTRON INTERNATIONALE INC.
                        1,000,000 SHARES OF COMMON STOCK
              1,000,000 REDEEMABLE COMMON STOCK PURCHASE WARRANTS
 
    DECTRON INTERNATIONALE INC. (the "Company") is hereby offering (the
"Offering"), separately and not as units, 1,000,000 shares of the Company's
common stock, no par value (the "Common Stock"), and 1,000,000 redeemable Common
Stock purchase warrants (the "Warrants"). The Common Stock and the Warrants will
be offered through J.P. Turner & Company., L.L.C. and Klein Maus and Shire
Incorporated ("Underwriters"). The Common Stock and the Warrants offered hereby
will be separately tradeable immediately upon issuance and may be purchased
separately. Each of the Warrants entitles the registered holder thereof to
purchase one share of Common Stock at a price of $9.20 per share, subject to
adjustment in certain circumstances, at any time during the four year period
commencing       , 1999 and ending on       , 2003 [five years from the
effective date]. The Warrants are subject to redemption by the Company at $.125
per Warrant at any time commencing       , 1999 [one year from the effective
date] (or sooner with the consent of J.P. Turner & Company, LLC.) on not less
than 30 days prior written notice to the holders of the Warrants, provided the
last sale price of the Common Stock has been at least $16.00 for 30 consecutive
trading days ending on the third day prior to the date on which the Company
gives notice of redemption. The Warrants will be exercisable until the close of
business on the day immediately preceding the date fixed for redemption.
 
   
    Prior to the Offering, there has been no public market for the Common Stock
and Warrants and no assurance can be given that any such market will develop
upon completion of the Offering. The Company is applying for quotation of the
Common Stock and Warrants on The Nasdaq National Market under the symbols
"DECTF" and "DECWF," respectively, and listing on the Boston Stock Exchange
under the symbols "DEC" and "DECW," respectively. The initial public offering
price of the Common Stock and the Warrants and the exercise price and other
terms of the Warrants have been determined by negotiation between the Company
and the Underwriters (for which J.P. Turner & Company, L.L.C. is the
"Representative") and do not necessarily bear any relation to the Company's
earnings, assets, book value, net worth or any other recognized criteria of
value. See "Underwriting."
    
 
   
      AN INVESTMENT IN THE SHARES OF COMMON STOCK AND WARRANTS OFFERED HEREBY
INVOLVES A HIGH DEGREE OF RISK AND IMMEDIATE AND SUBSTANTIAL DILUTION. SEE "RISK
             FACTORS" COMMENCING ON PAGE 8 AND DILUTION ON PAGE 15.
    
                           --------------------------
  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
 EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
  AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
      ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE
                        CONTRARY IS A CRIMINAL OFFENSE.
 
<TABLE>
<CAPTION>
                                                                                  UNDERWRITING
                                                                                 DISCOUNTS AND        PROCEEDS TO
                                                           PRICE TO PUBLIC(1)    COMMISSIONS(1)        COMPANY(2)
<S>                                                        <C>                 <C>                 <C>
Per Share................................................        $8.00                $.80               $7.20
Per Warrant..............................................        $.125               $.0125              $.1125
Total(3).................................................      $8,125,000           $812,500           $7,312,500
</TABLE>
 
   
(1) Does not include additional compensation payable to the Underwriters,
    consisting of (i) a non-accountable expense allowance ("Non-Accountable
    Expense Allowance") equal to 3% of the gross offering proceeds, or $243,750
    ($280,312.50 if the Underwriters' Over-Allotment Option is exercised in
    full), of which $50,000 has been paid to date, (ii) warrants to be sold to
    the Underwriters (the "Underwriters' Warrants") to purchase up to 100,000
    shares of the Common Stock and 100,000 Warrants, and (iii) a $96,000
    consulting fee payable to the Representative upon the Closing of this
    Offering. In addition, the Company also agreed to indemnify the Underwriters
    against certain liabilities under the Securities Act of 1933, as amended
    (the "Securities Act"). See "Underwriting."
    
 
(2) After deducting discounts and commissions payable to the Underwriters, but
    before deducting the Underwriters' Non-Accountable Expense Allowance, or the
    other expenses of the Offering, estimated at $773,350 payable by the
    Company. See "Underwriting."
 
(3) The Company has granted the Underwriters an option, exercisable for 45 days
    after the date the Securities and Exchange Commission declares the Company's
    registration statement effective (the "Effective Date") to purchase up to an
    additional 150,000 shares of Common Stock and 150,000 Warrants solely for
    the purpose of covering over-allotments, if any (the "Over-Allotment
    Option"). If the Over-Allotment Option is exercised in full, the total Price
    to Public, Underwriting Discounts and Commissions and Proceeds to Company
    will be $9,343,750, $934,375 and $8,409,375. See "Underwriting."
 
    The Shares and Warrants are being offered by the Underwriters on a "firm
commitment" basis, when, as and if delivered to and accepted by the
Underwriters, subject to prior sale, and other conditions and legal matters. The
Underwriters reserve the right to withdraw, cancel or modify the Offering and to
reject orders, in whole or in part, for the purchase of any of the securities
offered notwithstanding tender by check or otherwise. It is expected that
delivery of the certificates representing the Shares and Warrants will be made
against payment therefor at the offices of J.P. Turner & Company, L.L.C., 3340
Peachtree Road, Suite 450, Atlanta, Georgia 30326.
 
J.P. TURNER & COMPANY, L.L.C.                  KLEIN MAUS AND SHIRE INCORPORATED
 
                                        , 1998
<PAGE>
    THE COMPANY INTENDS TO FURNISH ITS STOCKHOLDERS WITH ANNUAL REPORTS
CONTAINING AUDITED FINANCIAL STATEMENTS AND TO MAKE AVAILABLE QUARTERLY REPORTS
FOR THE FIRST THREE QUARTERS OF EACH FISCAL YEAR CONTAINING UNAUDITED INTERIM
FINANCIAL STATEMENTS.
 
    CERTAIN PERSONS PARTICIPATING IN THE OFFERING MAY ENGAGE IN TRANSACTIONS
THAT STABILIZE, MAINTAIN OR OTHERWISE AFFECT THE PRICE OF THE COMMON STOCK OR
WARRANTS OFFERED HEREBY, INCLUDING PURCHASES OF THE COMMON STOCK OR WARRANTS TO
STABILIZE ITS MARKET PRICE, PURCHASES OF THE COMMON STOCK OR WARRANTS TO COVER
SOME OR ALL OF A SHORT POSITION IN THE COMMON STOCK OR WARRANTS MAINTAINED BY
THE UNDERWRITERS AND THE IMPOSITION OF PENALTY BIDS. FOR A DESCRIPTION OF THESE
ACTIVITIES, SEE "UNDERWRITING."
 
    THE SECURITIES OFFERED HEREBY HAVE NOT BEEN AND WILL NOT BE QUALIFIED FOR
SALE UNDER THE SECURITIES LAWS OF CANADA OR ANY PROVINCE OR TERRITORY OF CANADA.
THE SECURITIES ARE NOT BEING OFFERED FOR SALE AND MAY NOT BE OFFERED OR SOLD,
DIRECTLY OR INDIRECTLY, IN CANADA, OR TO ANY RESIDENT THEREOF, IN VIOLATION OF
THE SECURITIES LAWS OF CANADA OR ANY PROVINCE OR TERRITORY OF CANADA.
 
          ENFORCEABILITY OF CIVIL LIABILITIES AGAINST FOREIGN PERSONS
 
    The Company and its officers, directors and auditors are residents of Canada
and consequently substantially all of the assets of the Company are or may be
located outside the United States. As a result, service of process may be
effected upon the Company through the offices of Gersten, Savage, Kaplowitz &
Fredericks, LLP in New York, but it may be difficult for investors to effect
service of process within the United States upon non-resident officers and
directors, or to enforce against them judgments obtained in the United States
courts predicated upon the civil liability provision of the Securities Act of
1933, as amended ("Securities Act") or state securities laws. The Company
believes that a judgment of a United States court predicated solely upon civil
liability under the Securities Act would probably be enforceable in Canada if
the United States court in which the judgment was obtained had a basis for
jurisdiction in the matter that was recognized by a Canadian court for such
purposes. However, there is substantial doubt whether an action could be brought
in Canada in the first instance on the basis of liability predicated solely upon
such laws. If investors have questions with regard to these issues, they should
seek the advice of their individual counsel. The Company has also been informed
by its Canadian legal counsel Shaffer & Associates that, pursuant to the
Currency Act (Canada), a judgment by a court in any Province of Canada may only
be awarded in Canadian currency. However, a court in the Province of Quebec may
give effect to the manner of conversion to Canadian currency of an amount in a
foreign currency, where such manner of conversion is provided for in an
obligation enforceable in Quebec.
 
                               EXCHANGE RATE DATA
 
    The Company maintains its books of account in Canadian dollars, but has
provided the financial data in this Prospectus in United States dollars with its
audit conducted in accordance with generally accepted accounting principles in
the United States of America. All references to dollar amounts in this
Prospectus, unless otherwise indicated, are in United States dollars.
 
    The following table sets forth, for the periods indicated, certain exchange
rates based on the noon buying rate in New York City for cable transfers in
Canadian dollars. Such rates are the number of United States dollars per one
Canadian dollar and are the inverse of rates quoted by the Federal Reserve Bank
of New York for Canadian dollars per US$1.00. The average exchange rate is based
on the average of the
 
                                       i
<PAGE>
   
exchange rates on the last day of each month during such periods. On August  ,
1998, the exchange rate was Cdn$1.00 per US$
    
 
<TABLE>
<CAPTION>
                                                                            YEAR ENDED DECEMBER 31
                                                             -----------------------------------------------------
<S>                                                          <C>        <C>        <C>        <C>        <C>
                                                               1993       1994       1995       1996       1997
                                                             ---------  ---------  ---------  ---------  ---------
RATE AT END OF PERIOD......................................  $  0.7576  $  0.7143  $  0.7353  $  0.7299  $  0.6991
AVERAGE RATE DURING PERIOD.................................     0.7752     0.7299     0.7299     0.7353     0.7223
HIGH.......................................................     0.7416     0.7092     0.7009     0.7212     0.6945
LOW........................................................     0.8065     0.7642     0.7533     0.7526     0.7493
</TABLE>
 
    The following discussion should be read in conjunction with the preceding
Selected Financial Data and the Company's Financial Statements and the Notes
thereto and the other financial data included elsewhere in this Prospectus. This
Prospectus contains forward-looking statements regarding the plans and
objectives of management for future operations. The forward-looking statements
included herein are based on current expectations and assumptions that involve
numerous risks and uncertainties. Although management believes that the
assumptions underlying the forward-looking statements are reasonable, any of the
assumptions could prove inaccurate and, therefore, there can be no assurance
that the forward-looking statements included herein will prove to be accurate.
In light of the significant uncertainties inherent in the forward-looking
statements included herein, the inclusion of such information should not be
regarded as a representation by the Company or any other person that the
objectives and plans of the Company will be achieved.
 
                                       ii
<PAGE>
                               PROSPECTUS SUMMARY
 
    THE FOLLOWING SUMMARY IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO THE MORE
DETAILED INFORMATION, INCLUDING FINANCIAL STATEMENTS AND NOTES THERETO,
APPEARING ELSEWHERE IN THIS PROSPECTUS. EACH PROSPECTIVE INVESTOR IS URGED TO
READ THIS PROSPECTUS IN ITS ENTIRETY AND CAREFULLY CONSIDER THE INFORMATION SET
FORTH UNDER THE HEADING "RISK FACTORS." AS USED HEREIN, UNLESS OTHERWISE
INDICATED OR THE CONTEXT OTHERWISE REQUIRES, THE TERM THE "COMPANY" REFERS TO
DECTRON INTERNATIONALE, INC. ("DECTRON INTERNATIONALE"), ITS WHOLLY-OWNED
SUBSIDIARY DECTRON INC. ("DECTRON"), AND DECTRON'S WHOLLY-OWNED SUBSIDIARIES
FIBER MOBILE LTD. ("KLAASCO"), REFPLUS INC. ("REFPLUS"), THERMOPLUS AIR INC.
("THERMOPLUS") AND DECTRON USA, INC. ("DECTRON USA"). THIS CORPORATE STRUCTURE,
AS DISCUSSED IN MORE DETAIL BELOW, GIVES EFFECT TO A CORPORATE RESTRUCTURING
(THE "RESTRUCTURING") THAT WAS COMPLETED IMMEDIATELY PRIOR TO THE DATE OF THIS
PROSPECTUS. SEE "BACKGROUND" AND "BUSINESS-- CORPORATE RESTRUCTURING." UNLESS
OTHERWISE INDICATED, ALL DOLLAR AMOUNTS ARE STATED IN UNITED STATES DOLLARS. SEE
"EXCHANGE RATE DATA."
 
THE COMPANY
 
    The Company, which is located primarily in and around Montreal, Quebec,
Canada, is comprised of several separate operating subsidiaries that together
manufacture and supply an extensive array of products for the dehumidification,
refrigeration, air conditioning and indoor air quality ("IAQ") markets. The
products manufactured and supplied include mechanical dehumidifiers and energy
recovery systems through Dectron, and refrigeration and air conditioning systems
through RefPlus and ThermoPlus. ThermoPlus has also just recently introduced a
new line of air filtration products. Klaasco is responsible for producing the
bulk of the Company's special steel enclosures, electrical control panels, and
other steel products. However, each of the Company's manufacturing subsidiaries
has the capability of doing its own sheet metal work, and, except for Klaasco,
the ability to produce its own heat transfer coils.
 
    Management believes that it has structured the Company in such a way that,
other than with respect to the raw materials required to make the components for
its products and certain specialty products, the Company is not dependent on
outside suppliers for fabricated parts for its products. The Company has
invested significant resources in its manufacturing equipment and as a result
the Company can manufacture the most important components for any of its
fabricated products, regardless of whether the product is standard or a custom
design.
 
    DECTRON
 
    Dectron, the largest of the subsidiaries, was incorporated in 1977 to
develop, manufacture and market standard and custom design dehumidification
equipment. After extensive research and development, Dectron introduced a line
of indoor pool and commercial dehumidifiers under its DRY-O-TRON-TM- trademark.
The product line has experienced tremendous success in North America and as a
result has allowed the Company to become, in the opinion of management, the
leader in North America's indoor pool dehumidification business. Management
believes that the Company is now one of North America's leading manufacturers of
dehumidification and closed looped energy recyclers.
 
    Dectron's standard products are now primarily manufactured by ThermoPlus. As
a result, Dectron focuses its own manufacturing operations on the manufacture of
its customized dehumidification systems. Management believes that the customized
product market is where the Company's competitive advantage is most evident.
Ordinarily, with a customized product, it is often very difficult to commit to
an aggressive delivery date for the finished product. However, since the Company
manufactures most of the component parts in-house, it is able to commit to an
aggressive delivery schedule. The Company has taken the necessary steps to align
itself with several suppliers of its raw materials so that it is not dependent
on any one supplier. In addition, the Company keeps in storage a sufficient
inventory of raw material to supply its immediate needs. Some of the Company's
customized product customers include Celebration City, Walt Disney World in
Florida and the Goodwill Games which were held in Atlanta, Georgia.
 
                                       1
<PAGE>
    Dectron, through its subsidiary Dectron USA, operates a sales office in the
United States which is located in Roswell, Georgia. This office supports the
efforts of Dectron's network of trained manufacturer's representatives who sell
Dectron's products throughout the United States. Dectron also has sales
representatives throughout Canada and overseas. The Company invites its
independent sales representatives and their technicians to be trained and
certified by Dectron's own technical staff at no cost to the attendees at a
training school run by the Company. Management uses the training school to both
market its products and demonstrate to potential buyers, first hand, the
technical excellence its employees have to offer as a service to its customers.
Management believes that customer service and technical expertise are a large
part of what sets the Company apart from its competitors. The Company also
markets its products in trade magazines, through industry associations and by
attending trade shows where it displays and demonstrates many of its products.
 
    REFPLUS
 
    Refplus was incorporated in 1993 to manufacture high quality modular
commercial and industrial refrigeration and air conditioning equipment for
commercial and special applications. Its products include refrigeration systems,
condensers, coils, walk-in storage coolers and freezers. In addition, RefPlus
manufactures all of the heat transfer coils used by Dectron. RefPlus' primary
customers are supermarkets and convenience or grocery stores. RefPlus' product
line, which has recently been revamped and is now designed around
hydrofluorocarbon refrigerants ("HFC"), features high quality products intended
to meet the needs of a broad range of customers. See "Industry Overview."
 
    Since inception, RefPlus has manufactured some complex refrigeration systems
for application in fruit storage facilities, industrial baking facilities and
blast chillers for meat processing plants. Management believes that the
Company's RefPlus product lines offer an excellent opportunity for future
expansion. See "Expansion Plans."
 
    RefPlus has a small network of sales representatives in Canada, however, the
majority of its sales are conducted through a network of independent
wholesalers.
 
    THERMOPLUS
 
    In 1987, Keepkool Transfert de Chaleur Inc. ("Keepkool"), the former parent
company of Thermoplus, purchased the manufacturing facilities of York
International in St-Jerome, Quebec. Keepkool was owned by a group of investors
active in the heating, ventilation and air-conditioning ("HVAC") industry, which
group included Ness Lakdawala, the Company's President and Chief Executive
Officer. The Company acquired Thermoplus from Keepkool as part of the
Restructuring. See "Business-- Corporate Restructuring." Since inception,
Thermoplus has introduced and sold a variety of' HVAC product lines through a
network of Canadian wholesalers. In 1995, ThermoPlus introduced specialized
product lines in the field of dehumidification and specialized air conditioning.
 
    ThermoPlus' present product lines include dehumidification equipment, water
source air conditioners and heat pumps, portable or mobile air conditioning
equipment, industrial air handlers and air to fluid heat exchangers. These
product lines are sold through a network of Canadian wholesalers and HVAC
representatives. Although ThermoPlus' products are sold throughout North
America, with some exports outside of North America, the majority of its
revenues are derived from sales to Dectron and Refplus. Management believes that
it is capable of increasing both sales and manufacturing output of Thermoplus.
See "Expansion Plans."
 
    In keeping with the Company's strategic plan to expand into the IAQ market
segment, Thermoplus has recently introduced a new engineered line of IAQ air
filtration products.
 
                                       2
<PAGE>
    KLAASCO
 
    Klaasco, which was acquired by the Company in 1989, has been manufacturing a
wide range of metal products for more than 20 years. Most of its product demand
has been special enclosures, electrical control panels, control room consols,
shelters and busbars. Although most of Klaasco's products are manufactured for
Dectron, Inc., it does manufacture some metal products for sales outside of the
Company.
 
    Management believes that the acquisition of Klaasco was an important
strategic decision and it has given the Company the quality assurance, product
control and a significantly greater ability to meet aggressive delivery
deadlines.
 
EXPANSION PLANS
 
    The Company has grown from a single product and single market company
(Dectron) into a group of companies that cover a full range of humidity control,
IAQ control, energy recycling and refrigeration products with production
potential for both custom engineered and mass produced products. Management
believes that the introduction of a complete line of products to penetrate all
segments of the IAQ market will put the Company in the unique position of being
one of the only fully integrated companies of its kind. Management expects that
with a strong sales and marketing strategy to promote these and other subsequent
new products, the Company will experience a period of substantial growth,
although there can be no assurance thereof. The Company plans to continuously
inform its current and new targeted customers about its products through
technical seminars, product exhibitions and publication of major events in
industry journals.
 
    The Company intends to strengthen its position in the United States by
establishing multiple regional sales and distribution offices. Management
believes that the Company's active presence in the United States with Dectron
products will allow it to closely track the performance of the Company's
products in the market and will help solidify alternate distribution networks
for its RefPlus products., although there can be no assurance thereof.
Management also intends to aggressively pursue other international markets,
starting with South America, followed by the Caribbean and Mexico.
 
    There is an increased public movement to encourage healthy environments in
all public places. HVAC experts agree that the biggest challenge and key to
avoiding "sick building syndrome" is to introduce outside air and to filter and
remove humidity from said air. The Company has developed a product line of
"Make-Up Air Dehumidifiers" that management believes can solve what it perceives
as the two main problems in IAQ: moisture and humidity. The Company's products
are capable of bringing the required amounts of outdoor air into public areas
while at the same time dehumidifying the air, thus addressing the problems of
moisture and humidity. The present need for specialized IAQ equipment in North
America represents a market estimated by management to be in the multi-million
dollar range, in which only a limited number of companies have presently taken
the lead. Management believes, although there can be no assurance thereof, that
with the Company's team of engineering and design specialists, it can be on the
leading edge as a manufacturer and supplier of specialized IAQ equipment into
the next century.
 
                                       3
<PAGE>
CORPORATE STRUCTURE
 
    The Company was incorporated on March 3, 1998 to become the holding company
for Dectron and its operating subsidiaries RefPlus, ThermoPlus, Dectron USA and
Klaasco. As of the date of this Prospectus, the Company's corporate structure is
as follows:
 
   
                                [LOGO]
 
CORPORATE RESTRUCTURING
    
 
   
    Immediately prior to the effective date of the Registration Statement of
which this Prospectus forms a part, the Company restructured its corporate
structure ("Restructuring"). In order to complete the Restructuring, (i)
Dectron, which prior to the Restructuring owned a majority interest in Refplus,
acquired the minority interests in Refplus, which included both common stock and
preferred stock (and assumed Refplus' loan payables of approximately
Cdn$125,000, which amount is reflected in the combined financial statements
which are contained/set forth elsewhere in this Prospectus and is included in
the Cdn$1,149,050 number mentioned below) in exchange for 46,875 shares of the
Company's Common Stock and Cdn$102,503; (ii) Dectron acquired all of the
outstanding securities of Thermoplus, which included both Common Stock and
preferred stock, and assumed Thermoplus' parent company's loan payables
(approximately Cdn$497,000, which amount is included in the Cdn$1,149,050 number
mentioned below) in exchange for 145,965 shares of the Company's Common Stock
and Cdn$423,738, and (iii) the Company acquired all of the issued and
outstanding securities of Dectron in exchange for 1,557,159 shares of the
Company's Common Stock. The shares of Dectron, Inc. were owned by 159653 Canada,
Inc. which was a holding company beneficially owned by Mr. Lakdawala. The
Refplus and Thermoplus' parent company's loans payable represent the repayment
of loans made to such companies. In connection with the Restructuring, the
Company issued 1,750,000 shares of Common Stock and promissory notes in the
aggregate amount of Cdn$1,149,050. Of this amount, Cdn$557,050 (or approximately
U.S.$400,000) will be repaid out of the proceeds of this Offering. See "Use of
Proceeds." Of these amounts, an aggregate amount of 1,693,044 shares of Common
Stock and promissory notes in the aggregate amount of Cdn$592,000 were issued to
Ness Lakdawala, the Company's President, and his affiliates. The Cdn$592,000
payable to Mr. Lakdawala and his affiliates will be paid monthly (in 12 equal
installments) commencing three months after the Closing of this Offering,
without interest, out of the Company's cash flow.
    
 
                                       4
<PAGE>
   
    Mr. Lakdawala and his affiliates received their 1,693,044 shares of the
Company for contributing their interest in the Company's subsidiaries.
Specifically, Mr. Lakdawala's affiliate received 1,557,159 shares in exchange
for 100% of 159653 Canada Inc., which owned 100% of Dectron, Inc. prior to the
Restructuring; 117,606 shares for a portion of their shares of KeepKool Transfer
de Chaleur Inc. ("KeepKool") which represented 86% of KeepKool (KeepKool owned
94% of Thermoplus Air, Inc. prior to the Restructuring); and 18,279 shares for
his shares of 3294242 Canada Inc. which represented 61% of 3294242 (3294242
owned 49.99% of Refplus, Inc. prior to the Restructuring). Dectron Inc. owned
50.01% of Refplus Inc. prior to the Restructuring. The two promissory notes
totaling Cdn$592,000 were issued to Mr. Lakdawala and his affiliates in exchange
for Cdn$222,000 of debt owed to Mr. Lakdalawa by KeepKool and Cdn$370,000 for a
portion of his shares of KeepKool.
    
 
                                       5
<PAGE>
                                  THE OFFERING
 
   
<TABLE>
<S>                                 <C>
Common Stock Offered..............  1,000,000 shares of Common Stock
Warrants Offered..................  1,000,000 Warrants. Each Warrant entitles the holder to
                                    purchase one share of Common Stock. See "Description of
                                    Securities."
Offering Prices...................  $8.00 per share of Common Stock
                                    $0.125 per Warrant
Common Stock Outstanding
  Prior to the Offering(1)........  1,750,000
  After the Offering(1)(2)........  2,750,000
Warrants Outstanding:
  Prior to the Offering...........  0
  After the Offering(2)...........  1,000,000
Terms of Warrants:
  Exercise Price..................  The exercise price is $9.20 per share, subject to
                                    adjustment in certain circumstances
  Exercise Period.................  The Warrants are exercisable for a period of four years
                                    commencing on             , 1999 and expiring on
                                                , 2003.
Redemption........................  The Warrants are redeemable by the Company, commencing
                                                , 1999 (or sooner with the consent of the
                                    Representative), at a redemption price of $.125 per
                                    Warrant on not less than 30 days written notice, provided
                                    that the last sale price per share of Common Stock, for
                                    30 consecutive trading days ending on the third business
                                    day prior to the date of the redemption notice, is at
                                    least $16.00, subject to adjustment for certain events.
                                    See "Description of Securities --Warrants."
Risk Factor.......................  The securities offered hereby involve a high degree of
                                    risk and immediate substantial dilution to public
                                    investors. See "Risk Factors" and "Dilution."
Use of Proceeds...................  The net proceeds of the Offering will be used primarily
                                    for research and development, repayment of certain
                                    indebtedness, acquisition of additional personnel, sales
                                    and marketing and for working capital and general
                                    corporate purposes, including possible acquisitions. See
                                    "Use of Proceeds."
Proposed NASDAQ Symbols(3)........  Common Stock: DECTF
                                    Warrants:      DECWF
Proposed BSE Symbols(3)...........  Common Stock: DEC
                                    Warrants:      DECW
</TABLE>
    
 
- ------------------------
 
(1) Does not include (i) up to 200,000 shares of Common Stock issuable upon
    exercise of the Underwriters' Warrants and the Warrants contained therein,
    and (ii) an aggregate of 500,000 shares of Common Stock reserved for
    issuance upon the exercise of options available for future grant under the
    Company's 1998 Stock Option Plan (the "Plan"), none of which have been
    granted. See "Management-Stock Option Plan."
 
(2) Assumes no exercise of the Over-Allotment Option or Underwriters' Warrants
    or the exercise of the Warrants offered hereby.
 
(3) The proposed Nasdaq and Boston Stock Exchange symbols do not imply that a
    liquid and active market will develop or be sustained for the Common Stock
    or Warrants upon completion of the Offering.
 
                                       6
<PAGE>
SUMMARY COMBINED FINANCIAL INFORMATION
 
    The following summary financial information has been derived from the
financial statements of the Company. The summary financial information set forth
below is qualified by and should be read in conjunction with the financial
statements, including the notes thereto and other financial information included
elsewhere in this Prospectus.
 
   
<TABLE>
<CAPTION>
                                                         SIX MONTHS ENDED JULY 31,
                                                                (UNAUDITED)             YEAR ENDED JANUARY 31,
                                                         --------------------------  ----------------------------
<S>                                                      <C>           <C>           <C>            <C>
                                                             1997          1998          1997           1998
                                                         ------------  ------------  -------------  -------------
STATEMENT OF OPERATIONS DATA:
Sales..................................................  $  7,688,062  $  9,902,591  $  12,712,413  $  16,370,849
Gross profit...........................................     2,430,565     3,098,911      4,234,128      5,593,489
Income from operations.................................       796,149     1,102,897      1,324,058      1,556,322
Net income.............................................       450,089       607,352        696,778        863,331
Earnings per share.....................................          0.26          0.35           0.40           0.49
Number of Shares assumed for calculation...............     1,750,000     1,750,000      1,750,000      1,750,000
</TABLE>
    
   
<TABLE>
<CAPTION>
                                                                                           AT JULY 31, 1998
                                                                                     -----------------------------
<S>                                                                                  <C>            <C>
                                                                                              (UNAUDITED)
 
<CAPTION>
                                                                                        ACTUAL      AS ADJUSTED(1)
                                                                                     -------------  --------------
<S>                                                                                  <C>            <C>
BALANCE SHEET DATA:
Working capital....................................................................  $   1,411,664   $  7,076,973
Total assets.......................................................................     12,879,534     18,639,473
Long-term debt.....................................................................      2,037,155      1,709,608
Total liabilities..................................................................      9,915,957      9,390,851
Stockholders' equity...............................................................      2,963,577      9,248,622
</TABLE>
    
 
- ------------------------
 
   
(1) As adjusted to reflect the sale by the Company of the 1,000,000 shares of
    Common Stock and 1,000,000 Warrants offered hereby and the application of
    the net proceeds therefrom. Also reflects results of the Restructuring (as
    such term is hereinafter defined) with the assumption of additional debt of
    $688,079 (or Cdn$1,149,050 less Cdn$125,000 already reflected in the
    combined financial statements contained elsewhere in this Prospectus) plus
    the repayment in part of said debt in the amount of $400,000. In addition,
    the "as adjusted" number reflects additional goodwill of $94,630. See "Use
    of Proceeds" and "Business--Corporate Restructuring."
    
 
                                       7
<PAGE>
                                  RISK FACTORS
 
    THE SECURITIES OFFERED HEREBY ARE HIGHLY SPECULATIVE IN NATURE, INVOLVE A
HIGH DEGREE OF RISK AND SHOULD BE PURCHASED ONLY BY PERSONS WHO CAN AFFORD TO
LOSE THEIR ENTIRE INVESTMENT. ACCORDINGLY, PROSPECTIVE INVESTORS SHOULD
CAREFULLY CONSIDER, ALONG WITH OTHER MATTERS REFERRED TO HEREIN, THE FOLLOWING
RISK FACTORS IN EVALUATING THE COMPANY AND ITS BUSINESS BEFORE PURCHASING THE
SECURITIES OFFERED HEREBY. THIS PROSPECTUS CONTAINS FORWARD-LOOKING STATEMENTS
WHICH INVOLVE RISKS AND UNCERTAINTIES. THE COMPANY'S ACTUAL RESULTS COULD DIFFER
MATERIALLY FROM THOSE ANTICIPATED IN THESE FORWARD-LOOKING STATEMENTS AS A
RESULT OF CERTAIN FACTORS, INCLUDING THOSE SET FORTH IN THE FOLLOWING RISK
FACTORS AND ELSEWHERE IN THIS PROSPECTUS.
 
    UNCERTAINTY OF MARKET ACCEPTANCE.  The business segments in which the
Company competes are extremely competitive. Although the Company seeks to
establish its products as the preferred solution for IAQ problems, demand and
market acceptance for newly introduced products and services, such as
ThermoPlus' new Air Filtration and Purification product line, is subject to a
high level of uncertainty. The Company has not yet commenced significant
marketing activities relating to its new product lines. Potential customers may
elect to utilize other products which they believe to be more efficient or have
other advantages over the Company's products, or may otherwise be reluctant to
purchase the Company's products. Achieving market acceptance for the Company's
products will require substantial marketing efforts and expenditure of
significant funds to create awareness and demand by potential consumers as to
the perceived benefits and distinctive characteristics of the Company's
products. There can be no assurance that the Company will have available funds
or other resources necessary to achieve such acceptance. See "Use of Proceeds"
and "Business -- Sales and Marketing."
 
    RISKS RELATED TO PROPOSED EXPANSION; RISKS RELATING TO FOREIGN
OPERATIONS.  The Company intends to pursue a strategy of expansion through
acquisitions of existing companies engaged in businesses related to the
Company's operations and expansion of its current business into new territories.
Successful expansion of the Company's operations will be dependent on the
Company's ability to, among other things, (i) achieve significant market
acceptance for its products, (ii) hire and retain skilled management, marketing,
technical, engineering and other personnel, (iii) establish an effective sales
organization and enter into satisfactory marketing arrangements, secure adequate
sources of supply on a timely basis and on commercially reasonable terms,
especially with respect to the Company IAQ products for which the Company does
not currently have the capacity to manufacture all material parts, and (iv)
successfully manage growth (including monitoring operations, controlling costs
and maintaining effective quality controls). As of the date hereof, the Company
has no agreements, understandings or commitments and is not engaged in any
negotiations with any acquisition candidates. Investors in this Offering will
not have an opportunity to evaluate the specific merits or risks of any
potential acquisition. In addition, to the extent that the Company enters any
new foreign markets, as is currently contemplated, the Company will be subject
to all of the risks inherent with foreign trade, including trade restrictions,
export duties and tariffs, fluctuations in foreign currencies and international
political, regulatory and economic developments affecting foreign trade. There
can be no assurance that the Company will be able to successfully expand its
operations. See "Expansion Plans."
 
    COMPETITION  The industries in which the Company competes are all highly
competitive. The Company competes against a number of local, regional and
national manufacturers in each of its business segments, many of which have been
in existence longer than the Company and some of which have substantially
greater financial resources than the Company. The Company believes that
competition from new entrants, especially in the IAQ markets will come, if at
all, from large corporations which may be able to compete with the Company on
the basis of price and as a result may have a material adverse affect on the
results of operations of the Company. In addition, there can be no assurance
that other companies will not develop new or enhanced products that are either
more effective than the Company's or would render the Company's products
non-competitive or obsolete.
 
                                       8
<PAGE>
    DEPENDENCE ON KEY PERSONNEL.  The Company is highly dependent on the
experience of its management in the continuing development of its retail
operations. The loss of the services of certain of these individuals,
particularly Ness Lakdawala, President, Chairman and Chief Executive Officer of
the Company, and Reinhold Kittler, Executive Vice President of the Company,
would have a material adverse effect on the Company's business. The Company
intends to obtain key-man life insurance in the amount of $1,000,000 on the
lives of each of Mr. Lakdawala and Mr. Kittler, although there can be assurance
thereof, with the Company as the named in each case beneficiary. The Company's
future success will depend in part on its ability to attract and retain
qualified personnel to manage the development and future growth of the Company.
There can be no assurance that it will be successful in attracting and retaining
such personnel. The failure to recruit additional key personnel could have a
material adverse effect on the Company's business, financial condition and
results of operations.
 
    CONTINUED CONTROL BY MANAGEMENT.  Upon completion of this Offering,
management of the Company will beneficially own approximately 62% of the
Company's outstanding Common Stock. The Company's stockholders do not have the
right to cumulative voting in the election of directors. Accordingly, present
stockholders will be in a position to exert control over the business and
operations of the Company, including the election of all directors of the
Company. See "Principal Stockholders."
 
    DEPENDENCE UPON THIRD-PARTY SUPPLIERS.  Although the Company is not
dependent on any one supplier, the Company is dependent on the ability of its
third-party suppliers to supply the Company's raw materials as well as certain
specific component parts. Failure by the Company's third-party suppliers to meet
the Company's requirements could have a material adverse effect on the Company.
There can be no assurance that the Company's third-party suppliers will dedicate
sufficient resources to meet the Company's scheduled delivery requirements or
that the Company's suppliers will have sufficient resources to satisfy the
Company's requirements during any period of sustained demand. Failure of
manufacturers or suppliers to supply, or delays in supplying, the Company with
raw materials or certain components, or allocations in the supply of certain
high demand raw components could materially adversely affect the Company's
operations and ability to meet its own delivery schedules on a timely and
competitive basis.
 
    PATENTS, TRADEMARKS AND PROPRIETARY INFORMATION.  The Company holds two
United States patents, both related to its swimming pool dehumidifier, and two
Canadian patents, one related to its swimming pool dehumidifier and the other
relating to the method and apparatus for controlling heat rejection in a
refrigeration system. The Company also has trademark protection in both the
United States and Canada for the names Dectron-TM- and DRY-O-TRON-TM-. The
Company may apply for additional patents relating to other aspects of its
products. There can be no assurance as to the breadth or degree of protection
which existing or future patents or trademarks, if any, may afford the Company,
that any patent or trademark applications will result in issued patents or
trademarks, that the Company's patents or trademarks will be upheld, if
challenged, or that competitors will not develop similar or superior methods or
products outside the protection of any patent issued to the Company. Although
the Company believes that its patent and trademarks and the Company's products
do not and will not infringe patents or trademarks or violate the proprietary
rights of others, it is possible that the Company's existing patent or trademark
rights may not be valid or that infringement of existing or future patents,
trademarks or proprietary rights may occur. In the event the Company's products
infringe patents or proprietary rights of others, the Company may be required to
modify the design of its products, change the name of its products or obtain a
license for certain technology. There can be no assurance that the Company will
be able to do so in a timely manner, upon acceptable terms and conditions, or at
all. Failure to do any of the foregoing could have a material adverse effect
upon the Company. In addition, there can be no assurance that the Company will
have the financial or other resources necessary to enforce or defend a patent or
trademark infringement or proprietary rights violation action which may be
brought against it. Moreover, if the Company's products infringe patents,
trademarks or proprietary rights of others, the Company could, under certain
circumstances, become liable for damages, which also could have a material
adverse effect on the Company.
 
                                       9
<PAGE>
   
    IMMEDIATE AND SUBSTANTIAL DILUTION.  This Offering involves an immediate and
substantial dilution to investors. Purchasers of Common Stock in the Offering
will incur an immediate dilution of $4.67 per share (assuming no value is
ascribed to the Warrants) in the net tangible book value of their investment
from the initial public offering price, which dilution amounts to approximately
58% of the initial public offering price per share of Common Stock. Investors in
the Offering will pay $8.00 per share, as compared with an average cash price of
$1.49 per share of Common Stock paid by existing stockholders.
    
 
   
    BROAD DISCRETION OVER USE OF PROCEEDS.  Approximately 59.87% of the net
proceeds of this Offering will be applied to working capital and general
corporate purposes. Accordingly, management of the Company will have broad
discretion over the use of the proceeds. Although the Company may utilize a
portion of the net proceeds for potential acquisitions of complementary
businesses as of the date hereof, the Company has not identified any particular
targets. Stockholders of the Company may have no opportunity to approve
specified acquisitions or to review the financial condition of any potential
target. Moreover, there can be no assurance that any such acquisition
opportunities will become available on terms acceptable to the Company. See "Use
of Proceeds."
    
 
   
    CONTINUING INFLUENCE OF UNDERWRITERS.  The Underwriters may be able to exert
continuing influence on the Company in light of the fact that they have the
right to (i) appoint two board members or advisors for a three year period; (ii)
receive four year warrants to purchase up to 100,000 shares and 100,000
warrants; (iii) exercise their registration rights; (iv) act as financial
consultant to the Company for a two year period whereby it will receive a
$96,000 fee and shall provide advisory services related to mergers and
acquisitions, corporate finance and other matters and will be entitled to a
finder's fee if it acts as an investment banker on certain transactions. In
addition, the Company has agreed, for a period of two years from the date of
this Prospectus, not to issue any shares of Common Stock, Warrants, options or
other rights to purchase Common Stock, without the prior consent of the
Representative, subject to certain exceptions. As a result of the above rights
and/or restrictions the Underwriters may have significant control over certain
activities of the Company.
    
 
    CURRENCY FLUCTUATIONS.  Although the Company's financial statements included
herein are prepared in U.S. dollars, fluctuations in exchange rates between
Canadian and United States dollars may have a material adverse effect upon the
Company's results of operations. The impact of future exchange rate fluctuations
on the Company's results of operations cannot be accurately predicted. To date,
the Company has not sought to hedge the risks associated with fluctuation in
exchange rates and does not have a policy relating to hedging. There can be no
assurance that any hedging techniques that might be implemented by the Company
in the future would be successful or that the Company's results of operations
will not be materially adversely affected by exchange rate fluctuations.
 
    ENFORCEABILITY OF CIVIL LIABILITIES AGAINST FOREIGN PERSONS.  The Company
and its officers, directors and auditors are residents of Canada and
substantially all of the assets of the Company are or may be located outside the
United States. As a result, it may be difficult for investors to effect service
of process within the United States upon non-resident officers and directors, or
to enforce against them judgments obtained in the United States courts
predicated upon the civil liability provision of the Securities Act or state
securities laws. The Company believes that a judgment of a United States court
predicated solely upon civil liability under the Securities Act would probably
be enforceable in Canada if the United States court in which the judgment was
obtained had a basis for jurisdiction in the matter that was recognized by a
Canadian court for such purposes, although there can be no assurance thereof.
However, there is substantial doubt whether an action could be brought in Canada
in the first instance on the basis of liability predicated solely upon such
laws.
 
    INVESTMENT CANADA ACT.  The Investment Canada Act is a Federal Canadian
statute which regulates the acquisition or control of existing Canadian
businesses and the establishment of new Canadian businesses by an entity that is
a "non-Canadian," as that term is defined in the Investment Canada Act.
 
                                       10
<PAGE>
    The Company believes that it is not currently a "non-Canadian" for purposes
of the Investment Canada Act. If the Company were to become a "non-Canadian" in
the future, acquisitions of control of Canadian businesses by the Company would
become subject to the Investment Canada Act. Generally, the direct acquisition
by a "non-Canadian" of an existing Canadian business with gross assets of
$5,000,000 or more is reviewable under the Investment Canada Act, with a
threshold of $168 million for 1996 for "NAFTA investors" as defined under the
Investment Canada Act.
 
    Indirect acquisitions of existing Canadian businesses (with gross assets
over certain threshold levels), as well as acquisitions of businesses related to
Canada's cultural heritage or national identity (regardless of the value of
assets involved), may also be reviewable under the Investment Canada Act. In
addition, acquisitions of control of existing investments to establish new,
unrelated businesses are not generally reviewable but do require that a notice
of the investment be given under the Investment Canada Act. An investment in a
new business that is related to the "non-Canadian's" existing business in Canada
is not notifiable under the Investment Canada Act unless such investment relates
to Canada's cultural heritage or national identity.
 
    Investments which are reviewable under the Investment Canada Act are
reviewed by the Minister, designated as being responsible for the administration
of the Investment Canada Act. Reviewable investments may not be implemented
prior to the Minister determining that the investment is likely to be of "net
benefit to Canada" based on the criteria set out in the Investment Canada Act.
 
    FORWARD LOOKING STATEMENTS AND ASSOCIATED RISKS.  This Prospectus contains
certain forward-looking statements, including among others (i) anticipated
trends in the Company's financial condition and results of operations, and (ii)
the Company's business strategy for managing and expanding its operations. These
forward-looking statements are based largely on the Company's current
expectations and are subject to a number of risks and uncertainties. Actual
results could differ materially from these forward-looking statements. In
addition to other risks described elsewhere in this "Risk Factors" discussion,
important factors to consider in evaluating such forward-looking statements
include (i) changes in external competitive market factors or in the Company's
internal budgeting process which might impact trends in the Company's results of
operations; (ii) unanticipated working capital or other cash requirements; (iii)
changes in the Company's business strategy or an inability to execute its
strategy due to unanticipated changes in the industries in which it operates;
and (iv) various competitive factors that may prevent the Company from competing
successfully in the marketplace. In light of these risks and uncertainties, many
of which are described in greater detail elsewhere in this "Risk Factors"
discussion, there can be no assurance that the events predicted in
forward-looking statements contained in this Prospectus will, in fact,
transpire.
 
    AUTHORIZATION AND DISCRETIONARY ISSUANCE OF PREFERRED STOCK.  The Company's
Certificate of Incorporation authorizes the issuance of an unlimited number of
shares of "blank check" preferred stock, with such designations, rights and
preferences as may be determined from time to time by the Board of Directors.
Accordingly, the Board of Directors is empowered, without stockholder approval,
to issue preferred stock with dividend, liquidation, conversion, voting or other
rights which could adversely affect the voting power or other rights of the
holders of the Company's Common Stock. In the event of issuance, the preferred
stock could be utilized, under certain circumstances, as a method of
discouraging, delaying or preventing a change in control of the Company.
Although the Company has no present intention to issue any shares of its
preferred stock, and is prohibited from doing so for a period of 24 months from
the Effective Date, there can be no assurance that the Company will not do so in
the future. See "Description of Securities -- Preferred Stock."
 
    SHARES ELIGIBLE FOR FUTURE SALE.  Of the 2,750,000 shares of Common Stock of
the Company to be outstanding upon completion of this Offering, 1,750,000 shares
shall be "restricted securities," of which 1,693,044 are owned by "affiliates"
of the Company, as those terms are defined in Rule 144 promulgated under the
Securities Act. Absent registration under the Securities Act, the sale of such
shares is subject to Rule 144, as promulgated under the Securities Act. All of
the "restricted securities" will be eligible for resale under Rule 144. In
general, under Rule 144, subject to the satisfaction of certain other
conditions, a
 
                                       11
<PAGE>
   
person, including an affiliate of the Company, who has beneficially owned
restricted shares of Common Stock for at least one year is permitted to sell in
a brokerage transaction, within any three-month period, a number of shares that
does not exceed the greater of 1% of the total number of outstanding shares of
the same class, or, if the Common Stock is quoted on The Nasdaq Stock Market or
a stock exchange, the average weekly trading volume during the four calendar
weeks preceding the sale. Rule 144 also permits a person who presently is not
and who has not been an affiliate of the Company for at least three months
immediately preceding the sale and who has beneficially owned the shares of
Common Stock for at least two years to sell such shares without regard to any of
the volume limitations described above. Holders of all of such shares of Common
Stock are affiliates of the Company. All of the Company's officers and directors
who are stockholders have agreed not to sell or otherwise dispose of any of
their shares of Common Stock now owned or issuable upon the exercise of any
option for a period of 18 months from the Effective Date, without the prior
written consent of the Representative. However, such period shall be extended to
36 months for any officer or director whose total compensation is in excess of
$100,000 per year, or who owns more than 5% of the Company's outstanding Common
Stock. Following the 18 month or 36 month period as applicable, 20% of the
securities covered by each lock-up agreement will be released by the
Representative annually for a period of five years. No prediction can be made as
to the effect, if any, that sales of shares of Common Stock or the availability
of such shares for sale will have on the market prices of the Company's Common
Stock prevailing from time to time. The possibility that substantial amounts of
Common Stock may be sold under Rule 144 into the public market may adversely
affect prevailing market prices for the Common Stock and could impair the
Company's ability to raise capital in the future through the sale of equity
securities. See "Shares Eligible for Future Sale."
    
 
    EFFECT OF ISSUANCE OF COMMON STOCK UPON EXERCISE OF WARRANTS AND OPTIONS;
POSSIBLE ISSUANCE OF ADDITIONAL COMMON STOCK AND OPTIONS.  Immediately after the
Offering assuming the Underwriters' Over-Allotment Option is not exercised, the
Company will have an aggregate of 2,750,000 shares of Common Stock outstanding,
an unlimited number of shares of Common Stock authorized but unissued and not
reserved for specific purposes and an additional 2,000,000 shares of Common
Stock unissued but reserved for issuance pursuant to (i) the Company's 1997
Stock Option Plan, (ii) exercise of the Warrants, (iii) exercise of the
Over-Allotment Option and the Warrants underlying the Over-Allotment Option, and
(iv) exercise of the Underwriters' Warrants and the Warrants included therein.
All of such shares may be issued without any action or approval of the Company's
stockholders. Although there are no present plans, agreements, commitments or
undertakings with respect to the issuance of additional shares or securities
convertible into any such shares by the Company, any shares issued would further
dilute the percentage ownership of the Company held by the public stockholders.
The Company has agreed with the Underwriter that, except for the issuances
disclosed in or contemplated by this Prospectus and issuances in connection with
any merger or acquisition of another entity by the Company, it will not issue
any securities without the Underwriters' consent, including but not limited to
any shares of Common Stock, for a period of 24 months following the Effective
Date, without the prior written consent of the Underwriter. See "Underwriting."
 
    The exercise of warrants or options and the sale of the underlying shares of
Common Stock (or even the potential of such exercise or sale) may have a
depressive effect on the market price of the Company's securities. Moreover, the
terms upon which the Company will be able to obtain additional equity capital
may be adversely affected since the holders of outstanding warrants and options
can be expected to exercise them, to the extent they are able, at a time when
the Company would, in all likelihood, be able to obtain any needed capital on
terms more favorable to the Company than those provided in the warrants and
options. See "Management--Stock Option Plan," "Description of Securities" and
"Underwriting."
 
    NO DIVIDENDS AND NONE ANTICIPATED.  To date, no dividends have been declared
or paid on the Common Stock, and the Company does not anticipate declaring or
paying any dividends in the foreseeable future, but rather intends to reinvest
profits, if any, in its business. Investors should, therefore, be aware that it
is unlikely that any dividends will be paid on the Common Stock in the
foreseeable future. See "Dividend Policy."
 
                                       12
<PAGE>
    NASDAQ ELIGIBILITY AND MAINTENANCE REQUIREMENTS; POSSIBLE DELISTING OF
COMMON STOCK FROM NASDAQ NATIONAL MARKET SYSTEM.  Prior to this Offering, there
has been no established public trading market for the Company's Common Stock and
Warrants and there is no assurance that a public trading market for the
Company's Common Stock and Warrants will develop after the completion of this
Offering. If a trading market does in fact develop for the Common Stock and
Warrants offered hereby, there can be no assurance that it will be sustained.
 
    The Company has applied for listing of the Common Stock and Warrants on the
Nasdaq National Market upon the Effective Date. The Commission has recently
approved new rules imposing criteria for listing of securities on the Nasdaq
National Market, including standards for maintenance of such listing. In order
to qualify for initial quotation of securities on the Nasdaq National Market, an
issuer, among other things, must have at least $6,000,000 in net tangible
assets, $8,000,000 in market value of the public float and a minimum bid price
of $5.00 per share. For continued listing, an issuer, among other things, must
have $4,000,000 in net tangible assets, $5,000,000 in market value of securities
in the public float and a minimum bid price of $1.00 per share. If the Company
is unable to satisfy the Nasdaq National Market's maintenance criteria in the
future, its Common Stock and Warrants may be delisted from the Nasdaq National
Market. In such event, the Company would seek to list its securities on The
Nasdaq SmallCap Market, however, if it was unsuccessful, trading, if any, in the
Company's Common Stock and Warrants, would thereafter be conducted in the
over-the-counter market in the so-called "pink sheets" or The OTC Bulletin
Board. As a consequence of such delisting, an investor would likely find it more
difficult to dispose of, or to obtain quotations as to, the price of the
Company's Common Stock .
 
    PENNY STOCK REGULATION.  In the event that the Company is unable to satisfy
the maintenance requirements for the Nasdaq National Market and its Common Stock
falls below the minimum bid price of $5.00 per share for the initial quotation,
the Company would seek to list its securities on The Nasdaq SmallCap Market. If
it was unsuccessful, trading would be conducted on the "pink sheets" or The OTC
Bulletin Board. In the absence of the Common Stock being quoted on Nasdaq, or
listed on an exchange, trading in the Common Stock would be covered by Rule
15g-9 promulgated under the Securities Exchange Act of 1934, as amended (the
"Exchange Act"), if the Common Stock is a "penny stock." Under such rule,
broker-dealers who recommend such securities to persons other than established
customers and accredited investors must make a special written suitability
determination for the purchaser and receive the purchaser's written agreement to
a transaction prior to sale. Securities are exempt from this rule if the market
price is at least $5.00 per share.
 
    The Commission adopted regulations that generally define a penny stock to be
any equity security that has a market price of less than $5.00 per share,
subject to certain exceptions. Such exceptions include an equity security listed
on Nasdaq, and an equity security issued by an issuer that has (i) net tangible
assets of at least $2,000,000, if such issuer has been in continuous operation
for three years, (ii) net tangible assets of at least $5,000,000, if such issuer
has been in continuous operation for less than three years, or (iii) average
revenue of at least $6,000,000 for the preceding three years. Unless an
exception is available, the regulations require the delivery, prior to any
transaction involving a penny stock, of a disclosure schedule explaining the
penny stock market and the risks associated therewith.
 
    If the Company's Common Stock and Warrants were to become subject to the
regulations applicable to penny stocks, the ability of broker-dealers to sell
the Common Stock and Warrants and the ability of purchasers in this Offering to
sell their Common Stock and Warrants in the secondary market would be limited,
thereby severely affecting the market liquidity of the Common Stock and
Warrants. There is no assurance that trading in the Common Stock and Warrants
will not be subject to these or other regulations that would adversely affect
the market for such securities.
 
    POTENTIAL ADVERSE EFFECT OF REDEMPTION OF WARRANTS.  The Warrants offered
hereby are redeemable, in whole or in part, at a price of $.125 per Warrant (the
"Redemption Price"), commencing one year after the date of this Prospectus and
prior to their expiration on the fifth anniversary of the date of this
Prospectus provided that (i) prior notice of not less than 30 days is given to
the Warrantholders, (ii) the last sale price
 
                                       13
<PAGE>
of the Company's Common Stock shall have been at least $16.00 per share for a
period not less than 30 consecutive days trading period ending on the third day
prior to the date on which the notice of redemption is given. Warrantholders
shall have exercise rights until the close of the business day preceding the
date fixed for redemption. Notice of redemption of the Warrants could force the
holders to exercise the Warrants at the current market price when they might
otherwise wish to hold them, or to accept the Redemption Price, which may be
substantially less than the market value of the Warrants at the time of
redemption. The Warrants may not be exercised unless the registration statement
pursuant to the Securities Act, covering underlying shares of Common Stock is
current and such shares have been qualified for sale, or there is an exemption
from applicable qualification requirements, under the securities laws of the
state of residence of the Warrantholder. Although the Company does not presently
intend to do so, the Company reserves the right to call the Warrants for
redemption whether or not a current prospectus is in effect or such underlying
shares are not, or cannot be, registered in the applicable states. Such
restrictions could have the effect of preventing certain Warrantholders from
liquidating their Warrants. See "Description of Securities--Warrants."
 
    CURRENT PROSPECTUS AND STATE BLUE SKY REGISTRATION REQUIRED TO EXERCISE
WARRANTS.  Warrantholders have the right to exercise the Warrants for the
purchase of shares of Common Stock only if a current prospectus which will
permit the purchase and sale of the Common Stock underlying the Warrants is then
effective, but there can be no assurance that the Company will be able to keep
effective such a Prospectus. Although the Company intends to seek to qualify for
sale the shares of Common Stock underlying the Warrants in those states in which
the Securities are to be offered, no assurance can be given that such
qualification will occur. In addition, purchasers may buy Warrants in the
aftermarket or may move to jurisdictions in which the shares of Common Stock
issuable upon exercise of the Warrants are not so registered or qualified during
the period that the Warrants are exercisable. In such event, the Company would
be unable to issue shares of Common Stock to those persons desiring to exercise
their Warrants unless and until the shares of Common Stock could be registered
or qualified for sale in the jurisdictions in which such purchasers reside, or
an exemption to such qualification exists or is granted in such jurisdiction.
The Warrants may lose or be of no value if a prospectus covering the shares of
Common Stock issuable upon the exercise thereof is not kept current or if such
underlying shares of Common Stock are not, or cannot be, registered in the
applicable states. See "Description of Securities--Warrants."
 
    RELATIONSHIP OF REPRESENTATIVE TO TRADING.  The Representative may act as a
broker or dealer with respect to the purchase or sale of the Common Stock and
the Warrants in the over-the-counter market where each is expected to trade. The
Representative also has the right to act as the Company's exclusive agent in
connection with any future solicitation of Warrantholders to exercise their
Warrants. Regulation M, which was recently adopted to replace Rule 10b-6, under
the Securities Exchange Act of 1934, as amended (the "Exchange Act"), may
prohibit the Representative from engaging in any market-making activities with
regard to the Company's securities for a period of up to five business days (or
such other applicable period as Regulation M may provide) prior to any
solicitation by the Representative of the exercise of Warrants until the later
of the termination of such solicitation activity or the termination (by waiver
or otherwise) of any right that the Representative may have to receive a fee for
the exercise of Warrants following such solicitation. As a result, the
Representative and any soliciting broker/dealer may be unable to provide a
market for the Company's securities during certain periods while the Warrants
are exercisable. Any temporary cessation of such market-making activities could
have an adverse effect on the market price of the Company's securities.
 
    YEAR 2000 UNCERTAINTIES.  Recently, national attention has focused on the
potential problems and costs resulting from computer programs being written
using two digits rather than four to define the applicable year. Any computer
programs that have date-sensitive software may recognize a date using "00" as
the year 2000 complaint, there can be no assurance until the year 2000 that all
systems will function adequately then. If they do not, the result could be a
system failure or miscalculations causing disruptions of operations, including,
among other things, a temporary inability to process transactions, send
invoices, or engage in similar normal business activities.
 
                                       14
<PAGE>
                                    DILUTION
 
   
    At July 31, 1998, the Company had a net tangible book value of approximately
$2,609,543 or $1.49 per share based on 1,750,000 shares of Common Stock
outstanding. The net tangible book value per share represents the amount of the
Company's total assets less total liabilities, divided by the number of shares
of Common Stock outstanding. After giving effect to the receipt of the net
proceeds (estimated to be approximately $6,539,150) from the sale of the Shares
and Warrants offered hereby, the pro forma net tangible book value of the
Company at July 31, 1998 would be $9,148,693 or $3.33 per share of Common Stock.
This would result in dilution to the public investors (i.e. the difference
between the estimated initial public Offering price per share of Common Stock
and the net tangible book value thereof after giving effect to this Offering) of
approximately $4.67 per share or 58%. The following table illustrates the per
share dilution:
    
 
   
<TABLE>
<S>                                                                             <C>        <C>
Public offering price per share of Common Stock...............................             $    8.00
Net tangible book value per share before the Offering(1)......................  $    1.49
Increased attributable to new investors(1)....................................  $    1.84
                                                                                ---------
Pro forma net tangible book value per share after the Offering(1).............             $    3.33
                                                                                           ---------
Dilution to new investors(1)..................................................             $    4.67
                                                                                           ---------
                                                                                           ---------
</TABLE>
    
 
   
    The following table summarizes as of July 31, 1998 the differences between
the existing stockholders and new investors with respect to the number of shares
of Common Stock purchased from the Company, and the total consideration and the
average price per share paid:
    
 
   
<TABLE>
<CAPTION>
                                     SHARES      PERCENTAGE OF     AGGREGATE        PERCENTAGE OF           AVERAGE
                                  PURCHASED(1)  TOTAL SHARES OF  CONSIDERATION   TOTAL CONSIDERATION    PRICE PER SHARE
                                  ------------  ---------------  -------------  ---------------------  -----------------
<S>                               <C>           <C>              <C>            <C>                    <C>
Existing Shareholders...........    1,750,000             64%    $   2,607,500               25%           $    1.49
New Investors...................    1,000,000             36%    $   8,000,000               75%           $    8.00
                                  ------------           ---     -------------              ---
Total...........................    2,750,000            100%    $  10,607,500              100%
                                  ------------           ---     -------------              ---
                                  ------------           ---     -------------              ---
</TABLE>
    
 
- ------------------------
 
(1) This information does not include: (i) 1,000,000 shares of Common Stock
    issuable upon exercise of the Warrants offered hereby; (ii) up to an
    additional 300,000 shares of Common Stock issuable upon exercise of the
    Underwriters' Over-Allotment Option and the underlying Warrants; (iii)
    500,000 shares that may be issued under the Company's Stock Option Plan; and
    (iv) 200,000 Shares issuable upon the exercise of the Underwriters' Warrants
    and the Warrants included therein.
 
                                       15
<PAGE>
                                 CAPITALIZATION
 
   
    The following table sets forth (i) the capitalization of the Company at July
31, 1998, and (ii) "As Adjusted" to reflect the issuance and sale of the
1,000,000 Shares and 1,000,000 Warrants offered hereby. The information below
should be read in conjunction with the other financial information included
elsewhere in this Prospectus.
    
 
   
<TABLE>
<CAPTION>
                                                                                             JULY 31, 1998
                                                                                      ----------------------------
<S>                                                                                   <C>           <C>
                                                                                         ACTUAL     AS ADJUSTED(4)
                                                                                      ------------  --------------
Long-term debt, less current maturities(1)..........................................  $  2,037,155   $  1,709,608
Shareholders' equity:
  Capital Stock, unlimited shares authorized: 1,750,000 issued and outstanding (2);
  and 2,750,000 issued and outstanding as adjusted (2)(3); Preferred Stock,
  unlimited authorized, none outstanding............................................     1,934,695      8,219,740
  Foreign currency transaction adjustment...........................................      (196,650)      (196,650)
    Retained earnings...............................................................     1,225,532      1,225,532
    Total shareholders' equity......................................................     2,963,577      9,248,622
                                                                                      ------------  --------------
    Total capitalization............................................................  $  5,000,732   $ 10,958,230
                                                                                      ------------  --------------
                                                                                      ------------  --------------
</TABLE>
    
 
- ------------------------
 
(1) Some of the Company's assets are pledged to secure this indebtedness. See
    "Management's Discussion and analysis of Financial Conditions and Results of
    Operations. See Note 9 to "Notes to Consolidated Financial Statements".
 
(2) Does not include 500,000 shares of Common Stock provided for issuance under
    the Stock Option Plan.
 
(3) Assumes no exercise of the Warrants, the Underwriters' Warrants or the
    Underwriters' Over-Allotment Option.
 
(4) Gives effect to the Restructuring. See "Business--Corporate Restructuring."
 
                                       16
<PAGE>
                                USE OF PROCEEDS
 
    The net proceeds to be received by the Company from the sale of the Shares
and Warrants offered by the Company at a public offering price of $8.00 per
share of Common Stock and $.125 per Warrant, after deducting underwriting
commissions and offering expenses to be paid by the Company, is estimated to be
$6,539,150. The Company expects to apply the net proceeds of the Offering as
follows:
 
   
<TABLE>
<CAPTION>
                                                                    APPROXIMATE   PERCENTAGE OF
APPLICATION OF PROCEEDS                                                AMOUNT     NET PROCEEDS
- ------------------------------------------------------------------  ------------  -------------
<S>                                                                 <C>           <C>
Implementation of Expansion Plans(1)..............................  $    600,000         9.18%
Repayment of Indebtedness(2)......................................  $    473,841         7.25
Buyout of Minority Interest(3)....................................  $    400,000         8.93
Sales and Marketing...............................................  $    300,000         4.59
Research and Development(4).......................................  $    740,000        11.32
Working Capital and General Corporate Purposes(5).................  $  4,025,309        61.56
Total.............................................................  $  6,539,150       100.00%
</TABLE>
    
 
- ------------------------
 
(1) Represents anticipated expenses of hiring additional technical and
    operations personnel and establishing regional sales and distribution
    offices in connection with the Company's expansion plans.
 
   
(2) Represents (i) repayment of an aggregate of approximately $343,055 to the
    National Bank of Canada as payment in full of four ($66,692, $201,183,
    $27,558 and $47,622) bank term loans, which bank loans bear interest at
    prime (6.5%) plus 1%, 1%, 1.75% and 1.75%, respectively, and are repayable
    between February 2000 and April 2002 and (ii) repayment of an aggregate of
    approximately $130,786 to Caisse Populaire Desjardins as repayment in full
    of two ($42,806 and $87,980) bank term loans, which bank loans bear interest
    at prime plus 1% and 1.75%, respectively, and are repayable in February 1999
    and September 2000.
    
 
(3) Represents the estimated U.S. dollars needed to pay approximately
    Cdn$557,050 of indebtedness incurred in connection with the Restructuring,
    none of which is being paid to executive officers, directors or principal
    stockholders of the Company. See "Business - Corporate Restructuring."
 
   
(4) Represents anticipated expenses in connection with the Company's development
    of patents for the purpose of improving the Company's line of products and
    salaries for a research and development department that the Company intends
    to put together following the Offering.
    
 
   
(5) The net proceeds allocated to working capital include funds for general
    corporate purposes including the employment of additional personnel to
    support its anticipated growth and strategic acquisitions in furtherance of
    the Company's expansion plans. Since the Company can not be certain as to
    its growth rate and personnel needs to sustain such growth, the Company can
    not determine the exact amount of the net proceeds allocated to working
    capital that it will need for such purpose. Since, the Company is not
    currently in negotiations with any acquisition candidates the exact amount
    that will be expended as part of the Company's acquisition strategy can not
    be determined. Any acquisitions that the Company makes will be of businesses
    that are complimentary or related to the Company's business.
    
 
    The foregoing represents the Company's estimate of the allocation of the net
proceeds of the Offering based upon the current status of its operations and
anticipated business needs. It is possible, however, that the application of
funds will differ considerably from the estimates set forth herein due to
changes in the economic climate and/or the Company's planned business operations
or unanticipated complications, delays and expenses, as well as any potential
acquisitions that the Company may consummate, although no specific acquisition
has been identified. See "Management's Discussion and Analysis of Financial
Condition and Results of Operations." Any reallocation of the net proceeds will
be at the discretion of the Board of Directors of the Company.
 
                                       17
<PAGE>
    Any additional net proceeds realized from the exercise of the Over-Allotment
Option (up to approximately $1,060,312) will be added to the Company's working
capital.
 
    Pending application, the net proceeds will be invested principally in
short-term certificates of deposit, money market funds or other short-term
interest-bearing investments.
 
    The Company estimates that the net proceeds from this Offering will be
sufficient to meet the Company's liquidity and working capital requirements for
a period of at least 12 months from the completion of this Offering. In the
event that the Company acquires or introduces any additional product lines, such
funds will be derived from the funds currently allocated to working capital or
from revenues generated from the Company's operations.
 
                                DIVIDEND POLICY
 
    The Company has never paid or declared dividends on its Common Stock. The
payment of cash dividends, if any, in the future is within the discretion of the
Board of Directors and will depend upon the Company's earnings, its capital
requirements, financial condition and other relevant factors. The Company
intends, for the foreseeable future, to retain future earnings for use in the
Company's business.
 
                                       18
<PAGE>
          MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
                           AND RESULTS OF OPERATIONS
 
    THE FOLLOWING DISCUSSION SHOULD BE READ IN CONJUNCTION WITH THE PRECEDING
SELECTED FINANCIAL DATA AND THE COMPANY'S FINANCIAL STATEMENTS AND THE NOTES
THERETO AND THE OTHER FINANCIAL DATA INCLUDED ELSEWHERE IN THIS PROSPECTUS. THIS
PROSPECTUS CONTAINS FORWARD-LOOKING STATEMENTS REGARDING THE PLANS AND
OBJECTIVES OF MANAGEMENT FOR FUTURE OPERATIONS. THE FORWARD-LOOKING STATEMENTS
INCLUDED HEREIN ARE BASED ON CURRENT EXPECTATIONS AND ASSUMPTIONS THAT INVOLVE
NUMEROUS RISKS AND UNCERTAINTIES. ALTHOUGH MANAGEMENT BELIEVES THAT THE
ASSUMPTIONS UNDERLYING THE FORWARD-LOOKING STATEMENTS ARE REASONABLE, ANY OF THE
ASSUMPTIONS COULD PROVE INACCURATE AND, THEREFORE, THERE CAN BE NO ASSURANCE
THAT THE FORWARD-LOOKING STATEMENTS INCLUDED HEREIN WILL PROVE TO BE ACCURATE.
IN LIGHT OF THE SIGNIFICANT UNCERTAINTIES INHERENT IN THE FORWARD-LOOKING
STATEMENTS INCLUDED HEREIN, THE INCLUSION OF SUCH INFORMATION SHOULD NOT BE
REGARDED AS A REPRESENTATION BY THE COMPANY OR ANY OTHER PERSON THAT THE
OBJECTIVES AND PLANS OF THE COMPANY WILL BE ACHIEVED. ALL DOLLAR AMOUNTS BELOW
ARE STATED IN U.S. DOLLARS UNLESS OTHERWISE INDICATED.
 
GENERAL
 
    The Company has been in operation since June 1977 and has grown from a
single product and single market company into a group of companies that cover a
full range of humidity control, IAQ control, energy recycling and refrigeration
products which are marketed in Canada, the United States and overseas. The
Company secures its contracts through a network of representatives. The Company
is not dependent upon any major customer for a significant portion of its
revenues.
 
    The Company's goal is to aggressively seek a leading position in the IAQ
market. Management believes that no firm in North America has the strength of
the Company, not to mention the reputation, expertise, market presence and
manufacturing capabilities. The Company intends to devote significant efforts to
the development of equipment for the IAQ market. Management anticipates,
although there can be no assurance thereof, that the IAQ market will have
enormous future growth, as this relatively new area of engineering is forecasted
to grow extremely rapidly. The Company believes that there is a need in the
North American market for specialized IAQ equipment, which management believes
represents a tremendous opportunity for the Company. The Company expects a
period of substantial growth which will be supported by a strong marketing
strategy to promote these and other subsequent new products.
 
    The Company plans to expand its operations by acquiring other companies, by
expanding its product line and broadening its sales territory. Although specific
acquisition candidates have not been identified, the Company expects that a
portion of any acquisition price will be paid with shares of the Company's
Common Stock, and a portion may be paid with the proceeds of this Offering. See
"Use of Proceeds."
 
RESULTS OF OPERATIONS
 
   
    SIX MONTHS ENDED JULY 31, 1998 COMPARED TO SIX MONTHS ENDED JULY 31, 1997
    
 
   
    Revenues for the six months ended July 31, 1998 were $9,902,591, a 28.8%
increase over prior year revenues of $7,688,062. Gross profit for the period
increased by approximately $668,346 to $3,098,911 over the same period. This
represents a decrease in gross profit percentage of 0.32% from 31.61% to 31.29%,
expressed in relation to sales.
    
 
   
    Selling and marketing expenses increased by $103,635 in the six months ended
July 31, 1998 from $1,041,004 to $1,144,639. This increase mainly reflects the
costs of additional personnel and marketing expenses necessitated by sales
growth. However, selling and marketing expenses as a percentage of revenues
declined from 13.5% to 11.6%.
    
 
                                       19
<PAGE>
   
    General & administrative expenses of $613,206 were 30.3% higher than prior
year, reflecting increased spending to support sales growth. However, as a
percentage of revenues they remained relatively constant at approximately 6.1%.
    
 
   
    Interest expense for the period has increased by approximately $49,679 to
$164,564, due to extended financing requirements necessary to sustain sales
growth.
    
 
   
    Income before taxes was $938,333, an increase of $257,069 over the prior
year. This increase in income is a direct result of continued sales growth.
    
 
   
    Provision for income taxes increased to $330,981 from $231,175. This
increase is attributable to increased profits.
    
 
   
    As a result of the above factors, the Company's net income increased from
$450,089 to $607,352, an increase of 34.9%.
    
 
    FISCAL YEAR ENDED JANUARY 31, 1998 ("FISCAL 1998") COMPARED TO FISCAL ENDED
     JANUARY 31, 1997
     ("FISCAL 1997")
 
    Revenues for the year ended January 31, 1998 were $16,370,849, a 28.8%
increase over prior year revenues of $12,712,413. This increase was in part due
to expansion of the Company's manufacturing facilities and increased production
planning and scheduling.
 
    Gross Profit increased by $1,359,361 to $5,593,489 over the prior year. This
represents an increase of 0.86%, expressed in relation to sales. Compared to the
increase in sales of 28.8%, the gross profit increased by 32.1% due to a
reduction in cost of sales.
 
    Selling and marketing expenses increased $939,210 in Fiscal 1998.
Approximately $486,100 of this increase is a result of a change in the Company's
invoicing policy. To insure timely collection of receivables, the end user is
now invoiced and commissions are paid to the Company's representatives. The
remaining increase of $453,110 for this period reflects the costs of additional
personnel and marketing expenses necessitated by sales growth. As a percentage
of revenues, selling and marketing expenses increased from 10.5% to 13.9%.
 
    General and administrative expenses increased by $48,442 from $1,287,971 to
$1,304,014. As a percentage of revenues, general and administrative expenses
decreased from 10.1% to 7.9%. The percentage decrease is a result of fixed costs
and expenses; while the dollar increase is a result of annual salary increases.
 
    Interest expenses decreased by $46,816 from $334,493 to $287,677. As a
percentage of revenue a diminution of 0.87%. This change reflects the Company's
decision to refinance operating and terms loans, and negotiate a substantially
improved banking facility with the National Bank of Canada in the second half of
Fiscal 1998.
 
    Income before income taxes was $1,268,645, an increase of $279,080 over the
comparative period but relative to sales, remained at the same level in both
years (7.8%).
 
    Income tax expenses as a percentage of taxable income increased to 32.0% for
Fiscal 1998 from 22.6% for Fiscal 1997. Tax expenses increased by $181,617
because of the increase in taxable income and non-deductible items.
 
    As a result of the above factors, the Company's net income increased from
$696,778 to $863,331, an increase of 23.9%.
 
                                       20
<PAGE>
    FISCAL YEAR ENDED JANUARY 31, 1997 COMPARED TO FISCAL YEAR ENDED JANUARY 31,
     1996
 
    Revenues for the year ended January 31, 1997 were $12,712,413, a 51.8%
increase over prior year revenues of $8,375,015. A major part of this increase
in revenue is due to the first time consolidation of Refplus' revenues following
the Company's acquisition of a controlling interest. The remaining difference
(12%) is due to more efficient use of manufacturing facilities permitting the
Company to service more customers. Part of the increase in revenues is
attributable to servicing a new segment of the market with IAQ products. Part of
the increase is also due to the decline of the Canadian dollar.
 
    Gross profit for the period increased by $2,030,547 to $4,234,128 over the
same period. This represents an increase of 7.0%, expressed in relation to
sales. Comparative to the increase in sales of 51.8%, the gross profit increased
by 92.1% due to economies of scale and better use of the Company's resources.
 
    Selling and marketing expenses increased $292,427 in Fiscal 1997. The
increase for this period mainly reflects the costs of additional personnel and
marketing expenses necessitated by sales growth. As a percentage of revenues,
selling and marketing expenses decreased from 12.4% to 10.5%.
 
    General and administrative expenses increased by $418,926 from $869,045 to
$1,287,971. As a percentage of revenues, general and administrative decreased
from 10.4% to 10.1%. The increase is due in part to increased expenses
($236,926) and additional personnel ($182,000).
 
    Interest expenses increased by $42,430 from $292,063 to $334,493, due to
extended financing requirements necessary to sustain sales growth, but as a
percentage of revenue, it diminished by 0.85%.
 
   
    Income before income taxes, including extraordinary items, was $989,565, an
increase of $154,914 over the comparative year. The extraordinary item results
from Thermoplus Air's filing of a proposal under the provisions of the
Bankruptcy Act which gave full payment to secured creditors who filed a proof of
claim. The transaction resulted in a one-time forgiveness of debt. The total
debts were settled for $175,910. As a percentage of sales, income before taxes
was 7.8% in 1997 compared to 10.0% in the prior year.
    
 
    Income tax expenses as a percentage of taxable income increased to 22.6% for
1997 from 13.0% for 1996. Tax expense increased by $115,543 because of the
increase in taxable income and non-deductible items.
 
    As a result of the above factors, the Company's net income decreased to
$696,778 from $726,397 a decrease of 4.1%.
 
    LIQUIDITY AND CAPITAL RESOURCES
 
    In Fiscal 1998, the Company generated a positive cash flow from operating
activities of $65,181. In Fiscal 1997, the Company generated a negative cash
flow from operating activities of $148,440.
 
    The principal source of cash was from net income of $863,331, non-cash items
in the amount of $461,100, and an increase in accounts payable of $309,169. Net
income increased principally because of increased revenues. Non-cash items
increased due to investment in capital assets. Payables increased because of the
increased volume of business. The principal use of cash was for an increase in
inventory of $1,311,838 and an increase in accounts receivable of $385,013. Both
inventory and accounts receivable increased as a result of the increase in the
volume of business. In addition, the Company had implemented
a new stocking program. The most popular DRY-O-TRON-C- models are built for
stock and are available for quick delivery. Cash flow from investing activities
was reduced by $1,785,383 as a result of the purchase of one of the Company's
manufacturing facilities in the amount of $785,520, and production equipment in
the amount of $574,921. Financing activities provided net cash flow in the
amount of $1,585,868. The principal source of cash flow from financing came from
advances of bank indebtedness in the amount of $1,527,996 and advances from long
term debt in the amount of $453,346. The principal use of cash flow
 
                                       21
<PAGE>
from financing is repayment of a bank loan payable in the amount of $320,320.
Net cash flow generated after all activities was nil.
 
    In November 1997, the Company renewed a secured credit arrangement with
National Bank of Canada. This new facility included an aggregate credit line of
Cdn$5,400,000 of which Cdn$2,700,000 can be financed through bankers
acceptances. The amount available to the Company is equal to 75% of the
"eligible accounts receivable" as defined in the Line of Credit Agreement, plus
50% of the inventory values, net of work in process, up to a maximum advance
against inventory of approximately Cdn$1,750,000. The Company's borrowings under
the line of credit bear interest at Canadian prime plus 1/2% (1% for Thermoplus)
which at January 31, 1998 amounted to 6.0%. Interest on any borrowings is
payable monthly. The Company is in full compliance with all of the banking
covenants (including financial covenants and ratios) and is required to report
to its bankers on a monthly basis. The Company finances its operations mainly
through the use of bankers acceptances bearing an average lending rate of prime.
All borrowings are collateralized by the assets of the Company.
 
    In November 1997, the Company acquired one of its leased manufacturing
facilities, financing was as follows:
 
        1)  The Company secured a five-year financing in the amount of
    Cdn$700,000 through the Immigrant Investors Program at a rate of 5.21%. The
    Immigrant Investors Program is a program in Canada through which persons
    seeking Canadian citizenship pool monies for investment in companies that
    meet established criteria. Interest is paid monthly and the Company is
    committed to make monthly payments of Cdn$3,900 in a sinking fund which is
    given as security against the immigrant loan. Said capital repayment will be
    applied to the outstanding balance which is due in November 2002. The
    Company's intention is to renegotiate a new investor loan at that point in
    time.
 
        2)  The Company negotiated a balance of sale in the amount of
    Cdn$350,000 payable semi-annually (Cdn$58,888 per payment) without interest
    due October 2000.
 
        3)  The Company also secured an additional amount of Cdn$150,000 from
    National Bank of Canada at a fixed rate of 7.99% maturing in December 2002.
 
    In November 1997, the Company also renegotiated, at more favorable
conditions, a loan originally obtained through a "Company Assistance Program".
The Company obtained a term loan in the amount of Cdn$121,000 bearing interest
at prime plus 1% maturing in April 2002.
 
    In November 1997, the Company also renegotiated a "Small Business Loan" and
a bank term loan with a new term loan in the amount of Cdn$365,000 bearing
average interest at the bank prime rate plus 1% per annum maturing in April
2002.
 
    In Fiscal 1997, the principal source of cash was from net income of
$696,778, and from non-cash items in the amount of $289,256. Non-cash items
increased slightly due to investments in capital assets. The principal use of
cash was the increase in inventory of $895,202 and the increase in accounts
receivable of $527,956. Also accounts receivable increased because of the
increase in the volume of business. Inventory increased because of the increase
in volume and the purchase of inventory required to fill orders early in Fiscal
1998. Cash flow from investing activities was reduced by $609,003 mainly as a
result of the purchase of production equipment in the amount of $417,365.
Financing activities provided cash flow in the amount of $803,507. The principal
sources of cash flow from financing come from advances from loan payable in the
amount of $626,401, minority interest in the amount of $380,886 and advances
from bank indebtedness in the amount of $242,223. The principal use of cash flow
from investing was redemption of Class A shares in the amount of $509,115. Net
cash flow generated after all activities was negative in the amount of $64,999.
 
   
    The Company's net increase in cash flow from operations for the six months
ended July 31, 1998 was $153,581, an increase of $591,239, or 135% over the
prior year. Cash flows used in investing activities
    
 
                                       22
<PAGE>
   
during the six months ended July 31, 1998 were $632,425 compared to an inflow of
$145,954 for the previous year. This was due to the Company's acquisition of
capital equipment. Net cash provided from financing activities for the six
months ended July 31, 1998 was $447,159 compared to $422,431 for the six months
ended July 31, 1997. The source of financing was bank indebtedness used for
working capital purposes.
    
 
   
    The Company will receive net proceeds of this Offering in an amount
estimated to be $6,539,150. The Company believes that the net proceeds of the
Offering, coupled with income from operations will fulfill the Company's working
capital needs for at least the next 12 months. The Company intends to use
approximately $600,000 for implementation of its expansion plans, and an
additional $300,000 for sales and marketing. The Company also intends to retire
approximately $584,454 of its long term debt and also use approximately $240,000
to expand its research and development program. It is the Company's intention to
utilize a portion of the net proceeds to aggressively seek synergistic
acquisitions. In addition, the Company intends to use approximately $400,000 of
the Offering proceeds to pay certain debts incurred in connection with the
Restructuring. The Company also intends to pay Mr. Lakdawala and his affiliates
an aggregate of Cdn$592,000 in 12 equal monthly payments of Cdn$49,333,
commencing three months after the Effective Date, without interest, out of the
Company's cash flow. See "Business--Corporate Restructuring." As the Company
continues to grow, bank borrowings, other debt placements and equity offerings
may be considered, in part or in combination, as the situation warrants.
    
 
YEAR 2000
 
   
    Many computer systems used today may be unable to interpret data correctly
after December 31, 1999, because they allow only two digits to indicate the year
in a date. The Company is engaged in assessing this Year 2000 issue as it
relates to its business. This project, along with developing and implementing
solutions to the Year 2000 issue is continuing. Management currently anticipates
that the project will be substantially completed before the end of calendar year
1998 and will not have a material impact on the Company's financial result or
position. The Company does not believe that the costs of implementing its Year
2000 compliance will be material.
    
 
FOREIGN EXCHANGE
 
    The Company is a Canadian company with U.S. sales amounting to approximately
65% of its total sales while the majority of the Company's expenses are incurred
in Canadian dollars. Due to the relatively high proportion of sales in U.S.
dollars, the Company's results could be adversely affected by upward variations
in the value of the Canadian dollar. As of January 31, 1998, the Company does
not have a formal foreign exchange policy in effect. However, the Company uses
forward foreign exchange contracts to hedge cross-border transactions
denominated in U.S. dollars. Typically, these contracts have maturities of less
than 12 months. These forward contracts are executed with creditworthy
institutions and are purely for hedging purposes and not speculation.
 
FORWARD-LOOKING STATEMENTS
 
    Certain statements in Management's Discussion and Analysis of financial
condition and Results of Operations and certain sections of this Prospectus are
forward-looking. These may be identified by the use of forward-looking words or
phrases such as "believe", "expects", "anticipate", "should", "estimated" and
"potential", among others. These forward-looking statements are based on the
Company's reasonable current expectations. The Company notes that a variety of
factors could cause the Company's actual results and experiences to differ
materially from the anticipated results or other expectations expressed in such
forward-looking statements.
 
                                       23
<PAGE>
                                    BUSINESS
 
GENERAL
 
    THE COMPANY
 
    The Company is located primarily in and around Montreal, Quebec, Canada.
Through its four operating subsidiaries, Dectron, Refplus, Thermoplus and
Klaasco, the Company manufactures and supplies an array of products for the
dehumidification, refrigeration, air conditioning and indoor air quality ("IAQ")
markets. The products manufactured and supplied include mechanical dehumidifiers
and energy recovery systems through Dectron, and refrigeration and air
conditioning systems through RefPlus and ThermoPlus. ThermoPlus has also
recently introduced a new line of air filtration products. Klaasco is
responsible for producing the bulk of the Company's special steel enclosures,
electrical control panels, and other steel products. However, each of the
Company's manufacturing subsidiaries have the capability of doing its own sheet
metal work.
 
    Management believes that it has structured the Company in such a way that,
other than with respect to the raw materials required to make the components for
its products and certain specialty products, the Company is not dependent on
outside suppliers for fabricated parts for its products. The Company has
invested significant resources in its manufacturing equipment and as a result
the Company can manufacture the most important components for any of its
fabricated products, regardless of whether the product is standard or a custom
design.
 
    DECTRON
 
    Dectron, the largest of the subsidiaries, was incorporated in 1977 to
develop, manufacture and market standard and custom design dehumidification
equipment. After extensive research and development, Dectron introduced a line
of indoor pool and commercial dehumidifiers under its DRY-O-TRON-TM- trademark.
The product line has experienced tremendous success in North America and as a
result has allowed the Company to become, in the opinion of management, the
leader in North America's indoor pool dehumidification business. Management
believes that the Company is now one of North America's leading manufacturers of
dehumidification and closed looped energy recyclers.
 
    Dectron's standard products are now primarily manufactured by ThermoPlus. As
a result, Dectron focuses its own manufacturing operations on the manufacture of
its customized dehumidification systems. Management believes that the customized
product market is where the Company's competitive advantage is most evident.
Ordinarily, with a customized product, it is often very difficult to commit to
an aggressive delivery date for the finished product. However, since the Company
manufactures many of the component parts in-house, it is able to commit to an
aggressive delivery schedule. The Company has taken the necessary steps to align
itself with several suppliers of its raw materials so that it is not dependent
on any one supplier. In addition, the Company keeps in storage a sufficient
inventory of raw material to supply its immediate needs. Some of the Company's
customized product customers include Celebration City, Walt Disney World in
Florida and the Goodwill Games which were held in Atlanta, Georgia.
 
    Dectron, through its subsidiary Dectron USA, operates a sales office in the
United States which is located in Roswell, Georgia. This office supports the
efforts of Dectron's network of trained manufacturer's representatives who sell
Dectron's products throughout the United States. Dectron also has sales
representatives throughout Canada and overseas. The Company also invites its
independent sales representatives and their technicians to be trained and
certified by Dectron's own technical staff at no cost to the attendees at a
training school run by the Company. Management uses the training school to both
market its products and demonstrate to potential buyers, first hand, the
technical excellence its employees have to offer as a service to its customers.
Management believes that customer service and technical expertise are a large
part of what sets the Company apart from its competitors. The Company also
markets
 
                                       24
<PAGE>
its products in trade magazines, through industry associations and by attending
trade shows where it displays and demonstrates many of its products.
 
    REFPLUS
 
    Refplus was incorporated in 1993 to manufacture high quality modular
commercial and industrial refrigeration and air conditioning equipment for
commercial and special applications. Its products include refrigeration systems,
condensers, coils, walk-in storage coolers and freezers. In addition, RefPlus
manufactures all of the heat transfer coils used by Dectron. RefPlus' primary
customers are supermarkets and convenience or grocery stores. RefPlus' product
line, which has recently been revamped and is now designed around
hydrofluorocarbon refrigerants ("HFC"), features high quality products intended
to meet the needs of a broad range of customers. See "Industry Overview."
 
    Since inception, RefPlus has manufactured some complex products for
application in fruit storage facilities, industrial baking facilities and blast
chillers for meat processing plants. Management believes that the Company's
RefPlus product lines offer an excellent opportunity for future expansion. See
"Expansion Plans."
 
    RefPlus has a small network of sales representatives in Canada, however, the
majority of its sales are conducted through a network of independent
wholesalers.
 
    THERMOPLUS
 
    In 1987, Keepkool Transfer de Chaleur Inc. ("Keepkool"), the former parent
company of Thermoplus, purchased the manufacturing facilities of York
International in St-Jerome, Quebec. Keepkool was owned by a group of investors
active in the heating, ventilation and air-conditioning ("HVAC") industry, which
group included Ness Lakdawala, the Company's President and CEO, to manufacture
air conditioning systems. Since inception, Thermoplus has introduced and sold a
variety of' HVAC product lines through a network of Canadian wholesalers. In
1995, ThermoPlus' introduced specialized product lines in the field of
dehumidification and specialized air conditioning.
 
    ThermoPlus' present product lines include dehumidification equipment, water
source air conditioners and heat pumps, portable or mobile air conditioning
equipment, industrial air handlers and air to fluid heat exchangers. These
product lines are sold through a network of Canadian wholesalers and HVAC
representatives. Although ThermoPlus' products are sold throughout North
America, with some exports outside of North America, the majority of its
revenues are derived from sales to Dectron. Management believes that ThermoPlus'
product lines have growth potential, estimating that the present potential for
growth in both sales and manufacturing output is roughly 3 times its present
output. See "Expansion Plans."
 
    In keeping with the Company's strategic plan to expand into the IAQ market
segment, Thermoplus has recently introduced a new engineered line of IAQ air
filtration products.
 
    KLAASCO
 
    Klaasco, which was acquired by the Company in 1989, has been manufacturing
in-house a wide range of metal products for more than 20 years. Most of its
product demand has been special enclosures, electrical control panels, control
room consols, shelters and busbars. Although most of Klaasco's products are
manufactured for Dectron, Inc., it does manufacture some metal products for
sales outside of the Company.
 
    Management believes that the acquisition of Klaasco was an important
strategic decision and it has given the Company the quality assurance, product
control and a significantly greater ability to meet aggressive delivery
deadlines.
 
                                       25
<PAGE>
OVERVIEW OF IAQ INDUSTRY; PRODUCT APPLICATIONS
 
    The Company is aware of an increased public movement to encourage healthy
environments in all public places and the resulting market potential for its
products. For example, the hazards of second hand smoke have led to the ban of
cigarette smoking in most public areas. The public's demands have also been
focused on finding engineered solutions to ensure a healthy and comfortable
environment in schools and in the workplace. The theme has become much wider in
scope and has gained recognition as IAQ.
 
    The American Society of Heating, Refrigeration and Air Conditioning
Engineers ("ASHRAE") is the organization that sets ventilation standards in the
heating, refrigeration and air-conditioning industries for the United States and
Canada. ASHRAE has revised and re-drafted virtually all of the previous
ventilation standards with the objective to meet the public demand for healthier
indoor environments and to eliminate potential health hazards such as the much
publicized "Sick Building Syndrome." These standards are found in Article
62-1989R "Standard for Acceptable Ventilation Rates" ("62-1989R") and have
gained the acceptance and support of many important and related institutions
such as the International Society for Indoor Air Quality ("ISIAQ") and other
worldwide environmental associations.
 
    Management believes that the standards in 62-1989R will have a far reaching
effect on the fresh air requirements for all new and existing public buildings
in Canada and the USA. These standards specify, among other things, that 5 to 20
cubic feet per minute (CFM) per person of fresh air should be introduced into
all public places. The exact amount depends on the level of activity and the
capacity of the space in question.
 
    As a result, a new market has been created by these new fresh air
requirements. HVAC experts agree that the biggest challenge and key to avoid
"Sick Building Syndrome" is to introduce fresh air and to remove humidity from
said air. Moisture and humidity has been identified as one of the main causes of
health hazards such as Legionnaire's Disease.
 
    Heightened IAQ awareness has created a niche market for new product
development. The Company has developed a product line of "Make-Up Air
Dehumidifiers" that management believes can solve what it perceives as the two
main problems in IAQ: moisture and humidity. The Company's products are capable
of bringing the required amounts of outdoor air into public areas while at the
same time dehumidifying the air, thus addressing the problems of moisture and
humidity.
 
    The Company's engineers have designed its products for the IAQ market with a
reversible Water Source Heat Pump, a commonly used heating system that can be
easily connected to the popular water loop systems found today in almost every
building in every major North American city. Management believes that the
Company's Make-Up Air Dehumidifiers represent the most economical solution to
meet the new standards for healthy buildings. Management believes that its
Make-Up Air Dehumidifiers have the potential to become one of the Company's most
important and fastest growing product lines, along with its swimming pool
dehumidifiers.
 
    In addition, the Company intends to aggressively market ThermoPlus' new Air
Filtration & Purification product line which management believes offers a
comprehensive solution to IAQ in industrial and non-industrial applications.
 
    The Company's goal is to aggressively expand into the IAQ market, while
continuing to maintain and expand the individual markets currently served by the
Company.
 
EXPANSION PLANS
 
    The Company has grown from a single product and single market company
(Dectron) into a group of companies that cover a full range of humidity control,
IAQ control, energy recycling and refrigeration products, and has production
potential for both custom engineered and mass produced products. Management
believes that the introduction of a complete line of products to penetrate all
segments of the IAQ
 
                                       26
<PAGE>
market will put the Company in the unique position of being one of the only
fully integrated companies of its kind. Management expects that with a strong
sales and marketing strategy to promote these and other subsequent products, the
Company will experience a period of substantial growth, although there can be no
assurance thereof. The Company plans to continuously inform its current and new
targeted customers about its products through technical seminars, product
exhibitions and publication of major events in industry journals.
 
    The Company intends to strengthen its position in the United States by
establishing multiple regional sales and distribution offices. Management
believes that the Company's active presence in the United States with Dectron
products will allow it to closely track the performance of the Company's
products in the market and will help solidify alternate distribution networks
for its RefPlus product. Management also intends to aggressively pursue other
international markets, starting with South America, followed by the Caribbean
and Mexico.
 
    The present need for specialized IAQ equipment in North America represents a
market, estimated by management to be in the multi-million dollar range, in
which only a limited number of companies have presently taken the lead.
Management believes that with the Company's team of engineering and design
specialists, it can be on the leading edge as a manufacturer and supplier of
specialized IAQ equipment into the next century.
 
BUSINESS STRATEGY
 
    The Company's objective is to become North America's leading supplier of
dehumidification, refrigeration and other IAQ products, and to develop a strong
international sales network. As the Company intensifies its marketing efforts,
the Company will continue to attempt to increase its market share for its
various products. Management intends to place special emphasis in the short term
on its RefPlus products in the United States to address the need for HFC
refrigeration, and on ThermoPlus' Make-Up Air and Air Filtration & Purification
products for the IAQ market.
 
SALES AND MARKETING
 
    The Company's current sales and marketing efforts take place at the
subsidiary level, with each subsidiary taking its own approach with respect to
its products.
 
    Dectron markets its products on several levels. Nationally, Dectron markets
its products directly through trade magazines and industry associations, as well
as by attending and demonstrating its products at numerous trade shows
throughout North America. Regionally, Dectron markets its products through
non-employee sales representatives who enjoy exclusive rights to their
respective sales regions. At present, Dectron has approximately 120 regional
representatives throughout North America, and expects to add more in 1998.
Internationally, Dectron has sales coverage in England, Portugal, Israel, Kuwait
and Taiwan. Management believes that while the international markets provide
tremendous growth opportunities for the Company, it is important to first
develop a strong support network.
 
    ThermoPlus' advertising and marketing is limited because the majority of its
revenues are derived from sales made to Dectron and Refplus. ThermoPlus
primarily sells its products through wholesalers in Canada, and through
manufacturing representatives, one based in Canada and the other based in the
United States. However, the Company recently began marketing ThermoPlus'
products, including its newly introduced Air Filtration & Purification product
line for the IAQ market, through Dectron's sales representatives.
 
    RefPlus' marketing and advertising is currently done almost exclusively
through trade magazines. Most of its sales are through wholesalers and original
equipment manufacturers. Generally, RefPlus does not sell directly to the end
user. Its sales force currently consists of service personnel who are based at
the Company's headquarters, outside sales people based in Canada and in the
United States, and two sales
 
                                       27
<PAGE>
agencies covering Canada and the United States with approximately 22
representatives. Management believes that with the phasing out of
hydrochlorofluorocarbons ("HCFC") refrigeration products and the legislative
push towards HFC refrigeration products (like RefPlus products), RefPlus'
product line is well suited for an aggressive growth commitment.
 
   
    Klaasco does not currently market a significant amount of its products to
outside purchasers. The majority of Klaasco's revenues are derived from sales to
Dectron.
    
 
COMPETITION
 
    The industries in which the Company competes are highly competitive. The
Company competes against a number of local, regional and national manufacturers
in each of its business segments, many of which have been in existence longer
than the Company and some of which have substantially greater financial
resources than the Company. The Company competes on various basis, including
price, quality and ability to meet delivery schedules. Dectron competes with,
among others, DesertAire and Engineered Air, and Refplus and Thermoplus compete
with, among others, Cancoil and Keeprite. The Company believes that competition
from new entrants, especially in the IAQ markets will come, if at all, from
large corporations which may be able to compete with the Company on the basis of
price, and as a result may have a material adverse affect on the results of
operations of the Company. In addition, there can be no assurance that other
companies will not develop new or enhanced products that are either more
effective than the Company's products, or would render its products
non-competitive or obsolete.
 
   
PATENTS AND TRADEMARKS
    
 
   
    The Company has two United States and two Canadian patents. The patents
expire between 2000 and 2011. Three of the patents relate to swimming pool
dehumidifiers and the other relates to the Method and Apparatus for Controlling
Heat Rejection in a Refrigeration System.
    
 
   
    The Company has trademarked the Dectron and Dry-O-Tron names in both the
United States and Canada. The trademarks come up for renewal between 2000 and
2010.
    
 
PROPERTIES
 
   
    The Company maintains its executive office at leased premises located at
4300 Poirier Blvd., Montreal, Quebec H4R 2C5. This lease expires January 31,
2000, but may be renewed for an additional five years. The Company also has six
additional manufacturing facilities, of which four are leased, two are owned,
and all are located in or near Montreal, Quebec. The two owned manufacturing
facilities are located in Montreal and Boucherville, Quebec. The facilities are
in good condition and do not require any significant capital expenditures. The
Company maintains property insurance on the two owned manufacturing facilities
in an amount that it believes to be sufficient. Of the four leased facilities,
three of the leases expire on January 31, 2000, but may be renewed for an
additional five years, and the other lease expires on August 31, 1998, but may
be renewed for an additional year. The Company also leases, for a monthly rent
of $2,324, a 4,000 square foot sales and training facility in Roswell, Georgia.
The Company's facilities have an aggregate of approximately 170,000 square feet.
The Company pays an aggregate of approximately $16,700 rent per month. The
Company believes that suitable additional space will be available in the future
on commercially reasonable terms.
    
 
    The Company is seeking International Quality Standard ISO-9001 certification
for its Dectron facility and International Quality Standard ISO-9002
certification for its Thermoplus facility. ISO 9001 and ISO 9002 require the
facility to meet certain stringent requirements established in Europe but
adopted throughout the world which ensure that facilities' manufacturing
processes, equipment and associated quality control systems will satisfy
specific customer requirements. Management believes that ISO certification will
benefit the Company in the markets in which it competes. There is no assurance
that ISO certification will be obtained in the near future, if at all.
 
                                       28
<PAGE>
EMPLOYEES
 
   
    As of August 1, 1998, the Company (including the Subsidiaries) employed a
total of approximately 247 full-time employees, four of which are in executive
positions, 25 of whom are engaged in engineering and research and development,
12 of whom are engaged in sales and related services, 29 of whom are in
administration, and the remainder of which are in production. Of the Company's
employees, 36 employees, all of which are at Thermoplus, are represented by an
in-house union. Certain terms of their employment are part of a collective
bargaining agreement which expires in 2001. Management considers its relations
with its employees to be satisfactory.
    
 
LEGAL PROCEEDINGS
 
    The Company is not currently a party to any legal proceedings.
 
                                       29
<PAGE>
                                   MANAGEMENT
 
EXECUTIVE OFFICERS AND DIRECTORS
 
    The following table sets forth certain information concerning the executive
officers and directors and key personnel of the Company:
 
<TABLE>
<CAPTION>
NAME                                                       AGE                            POSITION
- -----------------------------------------------------      ---      -----------------------------------------------------
<S>                                                    <C>          <C>
Ness Lakdawala.......................................          64   President, Chief Executive Officer and
                                                                      Chairman
Reinhold Kittler.....................................          60   Executive Vice President and Director
Mauro Parissi........................................          32   Chief Financial Officer, Secretary and Director
Leena Lakdawala......................................          30   Executive Vice President and Director
Michel Lecompte......................................          48   Vice President of Operations of Refplus Inc.
Dave Lucas...........................................          38   Vice President of Dectron Inc
Ralph Kittler........................................          33   Vice President of Sales, Dectron Inc.
Roshan Katrak........................................          54   Director and Vice President of Human
                                                                      Relations
Guy Houle............................................          58   Director
</TABLE>
 
    NESS LAKDAWALA has been President, Chief Executive Officer and Chairman of
the Company since its inception and has been President and Chief Executive
Officer of Dectron Inc. since 1994. Prior to joining Dectron Inc., Mr. Lakdawala
was President of Blanchard Ness Limited, a company which he founded in 1976.
From 1987-1988, Mr. Lakdawala was Chairman of the Heating Refrigeration Air
Conditioning Institute of Canada. Mr. Lakdawala has also served as the Governor
of the American Society of Heating, Refrigeration and Air Conditioning
Engineers, Inc. ("ASHRAE"), the organization that sets ventilation standards in
Canada and the United States. Mr. Lakdawala is currently a member of ASHRAE and
the Refrigeration Service Engineers Society.
 
    REINHOLD KITTLER has been Executive Vice President and Director of the
Company since its inception and, since 1994, has been the Chairman of Dectron
Inc. From 1985 to 1993, Mr. Kittler was President of Dectron Inc. He currently
teaches refrigeration engineering at Vanier College in Montreal, Quebec. Mr.
Kittler has contributed extensively to the ASHRAE Handbook. Mr. Kittler is a
member of numerous industry related societies, including the Order of Engineers
of Quebec (since 1973), the International Institute of Ammonia Refrigeration
(since 1992), the Air Conditioning and Refrigeration Institute (since 1996), the
Refrigeration Services Engineers Society (since 1979) and ASHRAE (since 1974).
Mr. Kittler is frequently a guest speaker at industry related symposiums.
 
    MAURO PARISSI, C.A. has been Chief Financial Officer, Secretary and Director
of the Company since its inception and has been Controller of Dectron Inc. since
1996. From 1995-1996, Mr. Parissi was an auditor with the firm of Mizgala & Cie.
From 1990-1995, Mr. Parissi was an auditor with the firm of Hart, David Lloyd,
F.C.A., C.I.P. Mr. Parissi is currently a member of The Canadian Institute of
Chartered Accountants and The Order of Chartered Accountants of Quebec. Mr.
Parissi received his graduate diploma in Public Accountancy from McGill
University in 1995.
 
    LEENA LAKDAWALA has been Executive Vice President and a Director of the
Company since its inception, and Vice President of Production and Administration
for Dectron since 1994. She is currently a member of the Heating Refrigeration
and Air Conditioning Institute. Mrs. Lakdawala received her B.A from Concordia
University in 1993.
 
    MICHEL LECOMPTE has been Vice President of Operations of the Company since
its inception and President of Refplus Inc. since 1994. From 1977-1994, Mr.
Lecompte was with Blanchard Ness as both Chief Engineer and Estimator. Mr.
Lecompte was involved in estimating commercial and industrial HVAC systems as
well as updating operating and maintenance procedures to improve existing
equipment
 
                                       30
<PAGE>
efficiency. Mr. Lecompte also provided technical guidance to construction
departments and identified, evaluated and resolved problems. Mr. Lecompte is a
member of ASHRAE and is a voting member of ASHRAE's Technical Committee which
establishes worldwide acceptance of HVAC standards. In addition, Mr. Lecompte
conducts many HVAC seminars focusing on refrigeration and heat recovery. Mr.
Lecompte is also a member of the Refrigeration Service Engineers Society.
 
    DAVE LUCAS has been Vice President of Dectron Inc. since 1996. From
1993-1996, Mr. Lucas was a management consultant for the Federal Cooperative
Housing Stabilization Fund, where he managed loan portfolios and provided
management consulting services. From 1991--1993, Mr. Lucas was Director of
Marketing for Dectron Inc. He received his Bachelor of Science in Engineering
Physics from Queen's University in Kingston Ontario in 1981, and his MBA from
the University of Western Ontario in 1988.
 
    RALPH KITTLER has been Vice President of Sales of Dectron Inc. since 1993.
Prior thereto, he was National Sales Manager of Dectron Inc. Mr. Kittler is a
member of the ASHRAE committee responsible for large building air conditioning
applications and has been credited as an ASHRAE Handbook editor. Mr. Kittler
received his Bachelor of Science in Mechanical Engineering in 1989 from Lakehead
University in Thunder Bay Ontario.
 
    ROSHAN KATRAK has been Vice President of Human Relations of the Company
since its inception and of Dectron Inc. since 1994. From 1976 to 1994, she was a
Director of Blanchard Ness Limited, and from 1987 to present has been Vice
President of Human Relations for Thermoplus. Mrs. Katrak received her Honors
Degree in Psychology in 1964.
 
    GUY HOULE has been a Director of the Company since its inception. He is
currently a partner in the intellectual property firm of Swabey Ogilvy Renault
of Montreal, Quebec. He is also the President of Homart Ventures Inc., a product
development consulting company. Mr. Houle specializes in the field of technology
transfer and intellectual property licensing and has written articles and given
lectures on this topic. From 1984 to 1991 he was a member of the board of the
Licensing Executives Society (USA and Canada), Inc. ("LES"), during which time
he also served as vice-president, treasurer and member of the executive
committee and chairman of the audit committee. Mr. Houle is a member of several
professional associations, including the Institute of Electrical and Electronics
Engineers, Licensing Executives Society, Patent and Trademark Institute of
Canada, Institute of Electrical and Electronic Engineers and International
Association of Intellectual Property Practitioners.
 
    The term of office of each Director is until the next annual meeting of
stockholders and until a successor is elected and qualified or until the
Director's earlier death, resignation or removal from office. Executive officers
hold office until their successors are chosen and qualified, subject to earlier
removal by the Board of Directors. With respect to the Company's management
described above, Ness Lakdawala and Roshan Katrak are husband and wife and their
daughter is Leena Lakdawala, and Reinhold and Ralph Kittler are father and son.
 
   
    For the period of three years after the Effective Date, the Underwriters
shall have the right to designate two nominees to the Company's Board of
Directors. At this time, the Underwriters have not designated their nominees.
See "Underwriting."
    
 
COMMITTEES OF THE BOARD
 
    Within 90 days from the date of this Prospectus, the Company's Board of
Directors will have an Audit Committee, comprised of Ness Lakdawala and two
independent directors, and a Compensation Committee, comprised of Ness Lakdawala
and two independent directors.
 
                                       31
<PAGE>
COMPENSATION OF DIRECTORS
 
    The Company has not paid compensation to any director for acting in such
capacity. The Company is currently reviewing its policy on compensation of
outside directors and may pay outside directors in the future.
 
EXECUTIVE COMPENSATION
 
    The following table sets forth certain information regarding compensation
paid by the Company during each of the last three fiscal years to the Company's
Chief Executive Officer and to each of the Company's executive officers who
earned in excess of $100,000.
 
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                                           ANNUAL COMPENSATION
                                                                        ---------------------------------------------------------
                                                                                     OTHER
                                                                                     ANNUAL
NAME AND PRINCIPAL POSITION                                               YEAR     SALARY(1)       BONUS         COMPENSATION
- ----------------------------------------------------------------------  ---------  ----------     ------      -------------------
<S>                                                                     <C>        <C>         <C>            <C>
Ness Lakdawala, President,............................................             $  140,647            0                 0
Chief Executive Officer                                                      1998  $   65,655            0                 0
and Director(2)                                                         1997 1996  $   36,568            0                 0
</TABLE>
 
- ------------------------
 
(1) Represents the aggregate salaries paid to Mr. Lakdawala during the fiscal
    years presented by Dectron, Refplus and Thermoplus.
 
(2) In addition, Ness Lakdawala's wife received annual compensation of $40,054,
    $32,227 and $30,563 for the years ended January 31, 1998, 1997 and 1996,
    respectively, for serving as Vice President of Human Relations of Dectron,
    Inc.
 
EMPLOYMENT AGREEMENTS
 
    The Company does not currently have employment agreements with any its
officers. However, prior to the Effective Date, the Company intends to enter
into an employment agreement with Ness Lakdawala. The Company has no current
plans to enter into employment agreements with any other officers.
 
STOCK OPTION PLAN
 
    The Plan will be administered by the compensation committee or the Board of
Directors, who determine among other things, those individuals who shall receive
options, the time period during which the options may be partially or fully
exercised, the number of shares of Common Stock issuable upon the exercise of
the options and the option exercise price.
 
    The Plan is effective for a period of ten years, expiring in 2008. Options
may be granted to officers, directors, consultants, key employees, advisors and
similar parties who provide their skills and expertise to the Company. The Plan
is designed to enable management to attract and retain qualified and competent
directors, employees, consultants and independent contractors. Options granted
under the Plan may be exercisable for up to ten years, and shall be at an
exercise price all as determined by the Board. Options are non-transferable
except by the laws of descent and distribution or a change in control of the
Company, as defined in the Plan, and are exercisable only by the participant
during his or her lifetime. Change in control includes (i) the sale of
substantially all of the assets of the Company and merger or consolidation with
another Company, or (ii) a majority of the Board changes other than by election
by the stockholders pursuant to Board solicitation or by vacancies filled by the
Board caused by death or resignation of such person.
 
                                       32
<PAGE>
    If a participant ceases affiliation with the Company by reason of death,
permanent disability or retirement at or after age 70, the option remains
exercisable for one year from such occurrence but not beyond the option's
expiration date. Other types of termination allow the participant three months
to exercise, except for termination for cause which results in immediate
termination of the option.
 
    The exercise price of an option may not be less than the fair market value
per share of Common Stock on the date that the option is granted in order to
receive certain tax benefits under the Income Tax Act of Canada (the "ITA"). The
ITA requires that the exercise price of all future options will be at least 85%
of the fair market value of the Common Stock on the date of grant of the
options. A benefit equal to the amount by which the fair market value of the
shares at the time the employee acquires them exceeds the total of the amount
paid for the shares or the amount paid for the right to acquire the shares shall
be deemed to be received by the employee in the year the shares are acquired
pursuant to paragraph 7(1) of the ITA. Where the exercise price of the option is
equal to the fair market value of the shares at the time the option is granted,
paragraph 110(1)(d) of the ITA allows a deduction from income equal to one
quarter of the benefit as calculated above. If the exercise price of the option
is less than the fair market value at the time it is granted, no deduction under
paragraph 110(1)(d) is permitted. Options granted to any non-employees, whether
directors or consultants or otherwise will confer a tax benefit in contemplation
of the person becoming a stockholder pursuant to subsection 15(1) of the ITA.
 
    Options may not be transferred by an optionee other than by will or the laws
of descent and distribution, and, during the lifetime of an optionee, the option
will be exercisable only by the optionee.
 
    Options under the Plan must be issued within ten years from the effective
date of the Plan.
 
    Any unexercised options that expire or that terminate upon an employee's
ceasing to be employed by the Company become available again for issuance under
the Plan.
 
    The Plan may be terminated or amended at any time by the Board of Directors,
except that the number of shares of Common Stock reserved for issuance upon the
exercise of options granted under the Plan may not be increased without the
consent of the stockholders of the Company.
 
                                       33
<PAGE>
                             PRINCIPAL STOCKHOLDERS
 
    The following table sets forth certain information, as of the date hereof,
and as adjusted to give effect to the Offering and the transactions contemplated
thereby, with respect to the beneficial ownership of the Common Stock by (i)
each person known to the Company to beneficially own more than 5% of the
outstanding shares of Common Stock, (ii) each executive officer and director of
the Company and (iii) all executive officers and directors of the Company as a
group:
 
<TABLE>
<CAPTION>
                                                                                                     PERCENTAGE
                                                                                                 BENEFICIALLY OWNED
                                                                        NUMBER OF SHARES OF  --------------------------
                                                                           COMMON STOCK        BEFORE         AFTER
NAME AND ADDRESS OF BENEFICIAL OWNER(1)                                 BENEFICIALLY OWNED    OFFERING     OFFERING(4)
- ----------------------------------------------------------------------  -------------------  -----------  -------------
<S>                                                                     <C>                  <C>          <C>
 
Ness Lakdawala(2).....................................................        1,693,044           96.75%        61.57%
 
Roshan Katrak(3)......................................................        1,693,044           96.75         61.57
 
Reinhold Kittler......................................................                0               *             *
 
Mauro Parissi.........................................................                0               *             *
 
Guy Houle.............................................................                0               *             *
 
All Officers and Directors as a group(2)(3)...........................        1,693,044           96.75%        61.57%
</TABLE>
 
- ------------------------
 
*   represents less than 1%
 
(1) Unless otherwise indicated, the address of each beneficial owner is c/o the
    Company.
 
(2) Represents (i) 32,671 shares of Common Stock directly owned, (ii) 50,951
    shares of Common Stock owned by Roshan Katrak, Mr. Lakdawala's wife, (iii)
    52,263 shares of Common Stock owned by Roshaness Inc., a company owned by
    Mr. Lakdawala, and (iv) 1,557,159 owned by 3103-7195 Quebec Inc., a company
    owned by Mr. Lakdawala's spouse and children.
 
(3) Represents (i) 50,951 shares of Common Stock directly owned, (ii) 32,671
    shares of Common Stock owned by Ness Lakdawala, Ms. Katrak's husband, (iii)
    52,263 shares of Common Stock owned by Roshaness Inc., a Company owned by
    Ness Lakdawala, and (iv) 1,557,159 shares owned by 3103-7195 Quebec Inc., a
    company owned by Mrs. Katrak and her children.
 
(4) Does not give effect to (i) the exercise of the Warrants, (ii) the exercise
    of the Underwriters' Over-Allotment Option, and (iii) the exercise of the
    Underwriters' Warrants and the Warrants contained therein.
 
                                       34
<PAGE>
                              CERTAIN TRANSACTIONS
 
   
    The Company leases its St. Hubert, Quebec manufacturing facility from Roshan
Katrak, the Company's Vice President of Human Relations and the wife of Ness
Lakdawala, the Company's President, Chairman and CEO, for a monthly rent of
$3,094 per month. The Company believes that the lease was made on terms no less
favorable than could be obtained from unaffiliated third parties. Mr. Ness
Lakdawala may be deemed to be the promoter of the Company.
    
 
    The Company leases its Montreal, Quebec manufacturing facilities from
Roshaness Inc., a company owned by Ness Lakdawala,for a monthly rent of $3,220
per month. The Company believes that the lease was made on terms no less
favorable than could be obtained from unaffiliated third parties.
 
    The Company leases two commercial trucks from Investiness Inc., a company
owned equally by Ness Lakdawala's children, for an aggregate monthly lease
payment of Cdn$691.60. Upon expiration of both of these leases in 2000,
ownership of the trucks will transfer from Investiness Inc. to the Company. The
Company believes that these leases were made on terms no less favorable than
could be obtained from unaffiliated third parties.
 
    The Company leases certain computer hardware from Investiness Inc. for a
monthly lease of Cdn$980.21. Upon expiration of the lease, ownership of the
computer hardware will transfer from Investiness Inc. to the Company. The
Company believes that the lease was made on terms no less favorable than could
be obtained from unaffiliated third parties.
 
   
    Immediately prior to the effective date of the Registration Statement of
which this Prospectus forms a part, the Company restructured its corporate
structure ("Restructuring"). In order to complete the Restructuring, (i)
Dectron, which prior to the Restructuring owned a majority interest in Refplus,
acquired the minority interests in Refplus, which included both common stock and
preferred stock (and assumed Refplus' loan payables of approximately
Cdn$125,000, which amount is reflected in the combined financial statements
which are contained/set forth elsewhere in this Prospectus and is included in
the Cdn$1,149,050 number mentioned below) in exchange for 46,875 shares of the
Company's Common Stock and Cdn$102,503; (ii) Dectron acquired all of the
outstanding securities of Thermoplus, which included both Common Stock and
preferred stock, and assumed Thermoplus' parent company's loan payables
(approximately Cdn$497,000, which amount is included in the Cdn$1,149,050 number
mentioned below) in exchange for 145,965 shares of the Company's Common Stock
and Cdn$423,738, and (iii) the Company acquired all of the issued and
outstanding securities of Dectron in exchange for 1,557,159 shares of the
Company's Common Stock. The shares of Dectron, Inc. were owned by 159,653
Canada, Inc. which was a holding company beneficially owned by Mr. Lakdawala.
The Refplus and Thermoplus' parent company loans payable represent the repayment
of loans made to such companies. In connection with the Restructuring, the
Company issued 1,750,000 shares of Common Stock and promissory notes in the
aggregate amount of Cdn$1,149,050. Of this amount, Cdn$557,050 (or approximately
U.S.$400,000) will be repaid out of the proceeds of this Offering. See "Use of
Proceeds." Of these amounts, an aggregate amount of 1,693,044 shares of Common
Stock and promissory notes in the aggregate amount of Cdn$592,000 were issued to
Ness Lakdawala, the Company's President, and his affiliates. The Cdn$592,000
payable to Mr. Lakdawala and his affiliates will be paid monthly (in 12 equal
installments) commencing three months after the Closing of this Offering,
without interest, out of the Company's cash flow.
    
 
                                       35
<PAGE>
   
    Mr. Lakdawala and his affiliates received their 1,693,044 shares of the
Company for contributing their interest in the Company's subsidiaries.
Specifically, Mr. Lakdawala's affiliate received 1,557,159 shares in exchange
for 100% of 159653 Canada Inc., which owned 100% of Dectron, Inc. prior to the
Restructuring; 117,606 shares for a portion of their shares of KeepKool Transfer
de Chaleur Inc. ("KeepKool") which represented 86% of KeepKool (KeepKool owned
94% of Thermoplus Air, Inc. prior to the Restructuring); and 18,279 share for
his shares of 3294242 Canada Inc. which represented 61% of 3294242 (3294242
owned 49.99% of Refplus, Inc. prior to the Restructuring). Dectron Inc. owned
50.01% of Refplus Inc. prior to the Restructuring. The two promissory notes
totaling Cdn$592,000 were issued to Mr. Lakdawala and his affiliates in exchange
for Cdn$222,000 of debt owed to Mr. Lakdalawa by KeepKool and Cdn$370,000 for a
portion of his shares of KeepKool.
    
 
   
    The terms of the Restructuring were negotiated between Mr. Lakdawala and the
other owners of the minority interest in Refplus and Thermoplus. The value was
arrived at based on an independent appraisal performed by the Company's
independent accountants.
    
 
                                       36
<PAGE>
                           DESCRIPTION OF SECURITIES
 
    The total authorized capital stock of the Company consist of an unlimited
number of shares of Common Stock, without par value, and an unlimited number of
shares of Preferred Stock, without par value per share. The following
descriptions contain all material terms and features of the Securities of the
Company, are qualified in all respects by reference to the Articles of
Incorporation and Bylaws of the Company, copies of which are filed as Exhibits
to the Registration Statement of which this Prospectus is a part.
 
COMMON STOCK
 
    The Company is authorized to issue an unlimited number of shares of Common
Stock, without par value per share, of which as of the date of this Prospectus,
1,750,000 shares of Common Stock are outstanding, not including the Shares
offered herein. All outstanding Shares of common stock are, and all shares of
Common Stock to be outstanding upon the closing of this Offering will be validly
authorized and issued, fully paid, and non-assessable.
 
    The holders of Common Stock are entitled to one vote for each share held of
record on all matters submitted to a vote of stockholders. Holders of Common
Stock are entitled to receive ratably dividends as may be declared by the Board
of Directors out of funds legally available therefor. In the event of a
liquidation, dissolution or winding up of the Company, holders of the Common
Stock are entitled to share ratably in all assets remaining, if any, after
payment of liabilities. Holders of Common Stock have no preemptive rights and
have no rights to convert their Common Stock into any other securities.
 
WARRANTS
 
    Each Warrant entitles its holder to purchase one share of Common Stock at an
exercise price of $9.20 per share, subject to adjustment in certain
circumstances, for a period of four years commencing on       , 1999.
 
    The Warrants will be issued pursuant to a warrant agreement (the "Warrant
Agreement") among the Company, the Representative and Continental Stock Transfer
& Trust Company, the warrant agent, and will be evidenced by warrant
certificates in registered form.
 
    The exercise price of the Warrants and the number and kind of Common Stock
or other securities and property issuable upon the exercise of the Warrants are
subject to adjustment in certain circumstances, including a stock split of,
stock dividend on, or a subdivision, combination or capitalization of the Common
Stock and for any issuance of Common Stock for less than the lesser of the
market price of a share of Common Stock or the exercise price of the Warrants.
Additionally, an adjustment will be made upon the sale of all or substantially
all of the assets of the Company in order to enable holders of Warrants to
purchase the kind and number of shares or other securities or property
(including cash) receivable in such event by a holder of the number of shares of
Common Stock that might otherwise have been purchased upon exercise of the
Warrants.
 
    The Warrants do not confer upon the holder any voting or other rights of a
stockholder of the Company. Upon notice to the holders of the Warrants, the
Company has the right to reduce the exercise price or extend the expiration date
of the Warrants.
 
    Warrants may be exercised upon surrender of the warrant certificate
evidencing those Warrants on or prior to the respective expiration date (or
earlier redemption date) of the Warrants at the offices of the warrant agent,
with the form of "Election to Purchase" on the reverse side of the warrant
certificate completed and executed as indicated, accompanied by payment of the
full exercise price (by certified check payable to the order of the warrant
agent) for the number of the Warrants being exercised.
 
    No Warrant will be exercisable unless at the time of exercise the Company
has filed with the Commission a current prospectus covering the issuance of
Common Stock issuable upon the exercise of the Warrant and the issuance of
shares has been registered or qualified or is deemed to be exempt from
 
                                       37
<PAGE>
registration or qualification under the securities laws of the state of
residence of the holder of the Warrant. The Company has undertaken to use its
best efforts to maintain a current prospectus relating to the issuance of shares
of Common Stock upon the exercise of the Warrants until the expiration of the
Warrants, subject to the terms of the Warrant Agreement. While it is the
Company's intention to maintain a current prospectus, there is no assurance that
it will be able to do so. See "Risk Factors--Current Prospectus and State Blue
Sky Registration Required to Exercise Warrants."
 
    No fractional shares will be issued upon exercise of the Warrants. However,
if a holder of a Warrant exercises all Warrants then owned of record, the
Company will pay to that holder, in lieu of the issuance of any fractional share
which would be otherwise issuable, an amount in cash equal to such fractional
interest based on the market value of the Common Stock on the last trading day
prior to the exercise date.
 
    The Warrants are redeemable by the Company commencing       , 1999 (or
sooner with the consent of the Representative) at a redemption price of $0.125
per Warrant on not less than 30 days written notice, provided that the last sale
price per share of Common Stock, for 20 consecutive trading days ending on the
third business day prior to the date of redemption notice, is at least $16.00
(subject to adjustment for certain events). The Warrants shall be exercisable
until the close of the business day preceding the date fixed for redemption. In
addition, subject to the rules of the NASD, the Company has agreed to engage the
Representative as its exclusive warrant solicitation agents, in connection with
which the Representative would be entitled to a 5% fee upon exercise of the
Warrants. See "Underwriting."
 
PREFERRED STOCK
 
    The Company's Articles of Incorporation authorize the issuance of an
unlimited number of shares of Preferred Stock with designations, rights and
preferences determined from time to time by its Board of Directors. Accordingly,
the Company's Board of Directors is empowered, without stockholder approval, to
issue Preferred Stock with dividend, liquidation, conversion, or other rights
that could adversely affect the rights of the holders of the Common Stock.
Although the Company has no present intention to issue any shares of its
Preferred Stock, there can be no assurance that it will not do so in the future.
 
TRANSFER AGENT AND REGISTRAR
 
   
    The transfer agent, registrar and warrant agent for the Common Stock and
Warrants is Continental Stock Transfer & Trust Company, 2 Broadway, New York,
New York 10004.
    
 
                          TAX ASPECTS OF THE OFFERING
 
    INVESTORS CONSIDERING THE PURCHASE OF COMMON STOCK OR WARRANTS ARE URGED TO
CONSULT THEIR OWN TAX ADVISORS WITH RESPECT TO THE APPLICATION OF THE UNITED
STATES FEDERAL INCOME TAX CODE AS WELL AS TAX CONSEQUENCES ARISING UNDER THE
LAWS OF ANY STATE, LOCAL OR FOREIGN TAX JURISDICTION.
 
CANADIAN FEDERAL INCOME TAX CONSIDERATIONS -- PERSONS RESIDENT IN CANADA
 
    NO DISCLOSURE IS OR IS DEEMED TO BE MADE IN THE PROSPECTUS AS TO INCOME TAX
CONSEQUENCES APPLICABLE TO A RESIDENT OF CANADA AS TO ACQUIRING, HOLDING
CONVERTING OR DISPOSING OF COMMON STOCK OR WARRANTS.
 
CANADIAN FEDERAL INCOME TAX CONSIDERATIONS--PERSONS NOT RESIDENT IN CANADA
 
   
    In the opinion of Shaffer & Associates, special Canadian counsel to the
Company, the following are the principal Canadian federal income tax
considerations under the Income Tax Act (Canada) and the regulations thereunder
(collectively, the "Canadian Act"), the administrative practices of Revenue
Canada, Customs, Excise & Taxation and proposed amendments to the Canadian Act
and the regulations thereunder publicly announced by the Minister of Finance
prior to the date hereof generally applicable to acquiring, holding and
disposing of Common Stock and Warrants. There is no assurance that any proposed
amendments to the Tax Act or the regulations thereunder will be enacted as
proposed, if at all. It is assumed by Shaffer & Associates that at all material
times the Common Stock and Warrants will be listed
    
 
                                       38
<PAGE>
   
on NASDAQ, or some other Canadian or foreign stock exchange. Currently, neither
NASDAQ nor any other foreign stock exchange is prescribed for the purpose of
section 115 of the Canadian Act. Comment is restricted to prospective investors
(each an "Investor") who for the purposes of the Canadian Act are not resident
in Canada, hold all such Common Stock and Warrants and will hold all Common
Stock acquired on exercise thereof, solely as capital property, who deal at
arm's length with the Company and whose warrants and Common Stock will not at
any material time constitute "taxable Canadian property" for the purpose of the
Canadian Act. It is Shaffer & Associate's opinion that generally, neither a
share of Common Stock, nor a Warrant will constitute "taxable Canadian property"
of an Investor provided, among other things, that the Company is a public
company in that at least one class of its shares are listed on a prescribed
stock exchange in Canada. However, the Ministry of Finance proposes that after
April 26, 1995 shares listed on certain U.S. stock exchanges, including NASDAQ,
will not be "taxable Canadian property" provided either that the Investor did
not hold such security as capital property used in carrying on a business in
Canada, or that neither the Investor nor persons with whom the Investor did not
deal at arm's length alone or together owned 25% or more of the issued shares of
any class of the Company at any time in the five years immediately preceding a
disposition of the Common Stock or Warrants. For the purposes, a right or option
to acquire a share, including on exercise of a Warrant, is considered to be
equivalent to a share.
    
 
    This opinion does not take in account any provincial or foreign income tax
legislation or considerations nor does it take into account or anticipate any
changes in law or administrative practice including by way of judicial decision
or legislative action.
 
    This opinion is of a general nature and is not, and should not be construed
as, advice to any particular Investor as to Canadian Tax consequences applicable
to the Investor. Each Investor is urged to consult with the Investor's legal
profession advisors regarding tax and other legal consequences applicable to the
Investor's particular circumstances.
 
EXERCISE OF WARRANT
 
    An Investor will not incur liability of Canadian tax upon exercise of a
Warrant. The cost to the Investor of Common Stock acquired on exercise of a
Warrant will equal the adjusted cost base of the Warrant so exercised, plus any
amount paid by the Investor to exercise the Warrant.
 
DIVIDENDS ON COMMON STOCK
 
    An Investor will be liable to pay Canadian withholding tax equal to 25% (or
such lesser rate as may be provided under an applicable tax treaty) of the gross
amount of any dividend actually or deemed to have been paid or credited to the
Investor on the Investor's Common Stock. An Investor who is a resident of the
United States for purposes of the Canada-U.S. Income Tax Convention is subject
to a lesser tax of 15% of the gross amount of any dividend actually or deemed to
have been paid or credited to the Investor on the investor's Common Stock if the
Investor holds less than 10% of the voting stock of the Company, or 5% if the
Investor holds 10% or more of the voting stock of the Company. The Company will
be required to withhold the tax from the gross amount of the dividend, and to
remit the tax to the Receiver General of Canada for the account of the Investor.
Investors who are entitled to reduced withholding tax under an applicable treaty
must provide appropriate evidence of that entitlement satisfactory to the
Company.
 
DISPOSING OF COMMON STOCK
 
    An Investor will not incur liability for Canadian tax upon disposing of
Common Stock except where the Common Stock is redeemed or repurchased by the
Company, in which case a dividend could be deemed to result (see Dividends on
Common Stock above).
 
                                       39
<PAGE>
                        SHARES ELIGIBLE FOR FUTURE SALE
 
   
    Upon the consummation of this Offering, the Company will have 2,750,000
shares of Common Stock outstanding. In addition, the Company has reserved for
issuance 500,000 shares upon the exercise of options eligible for grant under
the Plan, none of which have been granted. Of the shares to be issued and
outstanding after this Offering, the 1,000,000 Shares offered hereby (plus any
additional Shares sold upon exercise of the Over-Allotment Option) will be
freely tradeable without restriction or further registration under the Act,
except for any shares purchased or held by an "affiliate" of the Company (in
general, a person who has a control relationship with the Company) which will be
subject to the limitations of Rule 144 adopted under the Act ("Rule 144"). The
remaining 1,750,000 shares of Common Stock are "restricted securities" as that
term is defined under Rule 144, and may not be sold unless registered under the
Act or exempted therefrom. None of the 1,750,000 restricted shares are currently
eligible to be sold in accordance with the exemptive provisions and the volume
limitations of Rule 144. All officers and directors who own shares of Common
Stock have agreed with the Representative not to offer, sell or otherwise
dispose of their shares until 18 months from the Effective Date without the
consent of the Representative, except pursuant to gifts or pledges in which the
donee or pledgee agrees to be bound by such restrictions. However, such period
shall be extended to 36 months for any officer or director whose total
compensation is in excess of $100,000 per year, or who owns more than 5% of the
Company's outstanding Common Stock. Following the 18 month or 36 month period as
applicable, 20% of the securities covered by such lock-up agreement will be
released by the Representative annually for a period of five years. These
agreements are enforceable only by the parties thereto, and are subject to
rescission or amendment at any time without approval of other stockholders.
    
 
    Sales of the Company's Common Stock by certain of the present stockholders
in the future, under Rule 144, may have a depressive effect on the price of the
Company's Common Stock.
 
RESTRICTIONS ON SALE IN CANADA
 
    None of the securities including the Common Stock, the Warrants, or the
Common Stock issuable upon or exercise of the Warrants (together, the
"Securities") has been qualified for sale in any of the provinces of Canada or
to any person who is a resident in any of the provinces of Canada.
 
                                       40
<PAGE>
                                  UNDERWRITING
 
    Subject to the terms and conditions set forth in the Underwriting Agreement,
each of the Underwriters named below, for whom J.P. Turner & Company, LLC is
acting as Representative, has severally agreed to purchase from the Company, and
the Company has agreed to sell to the Underwriters, on a firm commitment basis,
the respective number of shares of Common Stock and Warrants set forth below
opposite each such Underwriter's name:
 
<TABLE>
<CAPTION>
UNDERWRITERS                                                                 NUMBER OF SHARES   NUMBER OF WARRANT
- ---------------------------------------------------------------------------  -----------------  ------------------
<S>                                                                          <C>                <C>
J.P. Turner & Company, LLC.................................................         500,000             500,000
Klein, Maus and Shire Incorporated.........................................         500,000             500,000
Total......................................................................       1,000,000           1,000,000
</TABLE>
 
    The Underwriters have advised the Company that they propose to offer the
Shares and Warrants to the public at the public offering prices set forth on the
cover page of this Prospectus and that they may allow to selected dealers who
are members of the NASD, concessions of not in excess of $         per Share and
$         per Warrant, of which not more than $.      per Share and $
per Warrant may be re-allowed to certain other dealers who are members of the
NASD. After the initial public offering, the public offering prices, concessions
and reallowances may be changed.
 
   
    The Underwriting Agreement further provides that the Underwriters will
receive a non-accountable expense allowance of 3% of the aggregate public
offering price of the Shares and Warrants sold hereunder (including any Shares
or Warrants sold pursuant to the Over-Allotment Option), which allowance amounts
to $243,750 (or $280,312.50 if the Over-Allotment Option is exercised in full),
of which $50,000 has been paid to date.
    
 
    The Company has granted to the Underwriters the Over-Allotment Option, which
is exercisable for a period of 45 days after the Closing, to purchase up to an
aggregate 150,000 additional shares and 150,000 additional Warrants (up to 15%
of the shares being offered hereby) at the public offering price, less
underwriting discounts and commissions, solely to cover over-allotments, if any.
 
    The Representative has informed the Company that the Underwriters will not
make sales of the Shares and Warrants offered by this Prospectus to accounts
over which they exercise discretionary authority.
 
   
    The Company has agreed to sell to the Underwriters for a nominal
consideration, an Underwriters' Warrant to purchase up to 100,000 Shares and
100,000 Warrants, exclusive of the Over-Allotment Option. The Underwriters'
Warrant will be nonexercisable for one year after the date of this Prospectus.
Thereafter, for a period of four years, the Underwriters' Warrants will be
exercisable to purchase Common Stock at $13.20 per Share and to purchase
Warrants at $.206 per Warrant (165% of the initial public offering price), and
the Warrants contained in the Underwriters' Warrants will be exercisable to
purchase Common Stock at $9.20 per Share. The Company has agreed to file, during
the four year period beginning one year from the Effective Date of this
Prospectus, on one occasion at the Company's cost, at the request of the holders
of at least 80% of the Underwriters' Warrants and the underlying securities, and
to use its best efforts to cause to become effective, a post-effective amendment
to the Registration Statement or a new registration statement under the
Securities Act, as required to permit the public sale of Common Stock issued or
issuable upon exercise of the Underwriters' Warrants, as well as the Common
Stock issuable upon the Warrants contained in the Underwriters' Warrants. In
addition, the Company has agreed to give advance notice to holders of the
Underwriters' Warrants of its intention to file certain registration statements
commencing one year and ending four years after the Effective Date, and in such
case, holders of such Underwriters' Warrants or underlying shares of Common
Stock shall have the right to require the Company to include all or part of such
shares of Common Stock underlying such Underwriters' Warrants in such
registration statement at the Company's expense.
    
 
                                       41
<PAGE>
    For the life of the Underwriters' Warrants, the holders thereof are given,
at nominal costs, the opportunity to profit from a rise in the market price of
the Company's securities with a resulting dilution in the interest of other
stockholders. Further, the holders may be expected to exercise the Underwriters'
Warrants at a time when the Company would in all likelihood be able to obtain
equity capital on terms more favorable than those provided in the Underwriters'
Warrants.
 
    The Company has agreed that upon closing of this Offering, the Underwriters
shall have the right to designate an aggregate of two advisors to the Company's
Board of Directors or, in lieu thereof, to designate an aggregate of two
nominees to the Company's Board of Directors for a period of three years from
the Effective Date. In addition, the Company will utilize its best efforts to
obtain votes in favor of such nominees.
 
    The Company has agreed to retain the Underwriters as the Company's financial
consultants for a period of two years to commence on the closing of this
Offering, at a monthly fee of $4,000, or an aggregate of $96,000, all of which
shall be payable in advance on the closing of the Offering. Pursuant to this
agreement, the Underwriters shall provide advisory services related to merger
and acquisition activity, corporate finance and other matters.
 
    The public offering price of the Shares and Warrants offered hereby has been
determined by negotiation between the Company and the Representative. Factors
considered in determining the offering price of the Shares and Warrants offered
hereby included the business in which the Company is engaged, the Company's
financial condition, an assessment of the Company's management, the general
condition of the securities markets and the demand for similar securities of
comparable companies.
 
   
    The Company has agreed, for a period of two years from the date of this
Prospectus, not to issue any shares of Common Stock, Warrants or any options or
other rights to purchase Common Stock without the prior written consent of the
Representative. Notwithstanding the foregoing, the Company may issue up to
500,000 shares upon exercise or conversion of any options under the 1998 Stock
Option Plan whether or not currently outstanding. In addition, each of the
Company's shareholders who is an officer or director has agreed not to publicly
sell or otherwise dispose of any of their Common Stock for a period of 18 months
following the Effective Date without the consent of the Representative, which
consent would be subject to the nature of the market for the Company's
securities, the volume and price of the Common Stock, and the operations and
financial condition of the Company. However, such period shall be extended to 36
months for any officer or director whose total compensation is in excess of
$100,000 per year, or who owns 5% or more of the Company's outstanding Common
Stock. Following the 18 month or 36 month period, as applicable, 20% of the
securities subject to each lock up agreement will be released by the
representative annually for a period of five (5) years.
    
 
   
    In connection with this Offering, the Underwriters and selling group members
and their respective affiliates may engage in transactions that stabilize,
maintain or otherwise affect the market price of the Common Stock. Such
transactions may include stabilization transactions effected in accordance with
Rule 104 of Regulation M, pursuant to which such persons may bid for or purchase
Common Stock for the purpose of stabilizing their respective market prices. The
Underwriters also may create a short position for the account of the
Underwriters by selling more shares of Common Stock in connection with the
Offering than they are committed to purchase from the Company, and in such case
may purchase shares of Common Stock or Warrants in the open market following
completion of the Offering to cover all or a portion of such short position. The
Underwriters may also cover all or a portion of such short position by
exercising the Over-Allotment Option. Any of the transactions described in this
paragraph may result in the maintenance of the price of the Common Stock or
Warrants at a level above that which might otherwise prevail in the open market.
None of the transactions described in this paragraph is required, and, if they
are undertaken they may be discontinued at any time.
    
 
    Commencing one year after the date of this Prospectus, the Company will pay
the Underwriters a fee of 5% of the exercise price of each Warrant exercised,
provided (i) the market price of the Common Stock
 
                                       42
<PAGE>
on the date the Warrant was exercised was greater than the Warrant exercise
price on that date; (ii) the exercise of the Warrant was solicited by a member
of the NASD; (iii) the Warrant was not held in a discretionary account; (iv) the
disclosure of compensation arrangements was made both at the time of this
Offering and at the time of exercise of the Warrant; (v) the solicitation of the
exercise of the Warrant was not a violation of Regulation M promulgated under
the Exchange Act; (vi) the Underwriters provide bona fide services in connection
with solicitation of the Warrant and (vii) the Warrant holder designates in
writing which broker-dealer made the solicitation. The Underwriters and any
other soliciting broker-dealers may be prohibited from engaging in any
market-making activities or solicited brokerage activities with regard to the
Company's securities during the periods prescribed by Regulation M, five
business days (or other applicable period as Regulation M may provide) before
the solicitation of the exercise of any Warrant until the later of the
termination of such solicitation activity or the termination of any right the
Underwriters and any other soliciting broker/dealer may have to receive a fee
for the solicitation of the exercise of the Warrants.
 
    The Underwriting Agreement provides for reciprocal indemnification between
the Company and the Underwriters against certain liabilities in connection with
this Offering, including liabilities under the Securities Act.
 
    The foregoing is a summary of the material terms of the Underwriting
Agreement, the Underwriters' Warrant and the Financial Consulting Agreement.
Reference is made to the copies of the Underwriting Agreement, the Underwriters'
Warrant and the Financial Consulting Agreement, which are filed as exhibits to
the Registration Statement of which this Prospectus forms a part.
 
                                 LEGAL MATTERS
 
    Certain legal matters relating to Canadian law, including the validity of
the issuance of the Common Stock offered herein, will be passed upon for the
Company by Shaffer & Associates, 4150 Sherbrooke West, 3rd Floor, Montreal,
Quebec H3Z 1C2 (Canada). Certain legal matters in connection with the Offering
will be passed upon for the Company by its United States counsel, Gersten,
Savage, Kaplowitz & Fredericks, LLP, 101 East 52nd Street, New York, New York
10022. Certain legal matters will be passed upon for the Underwriters by
Sichenzia, Ross & Friedman, LLP, 135 West 50th Street, New York, New York 10020.
 
                                    EXPERTS
 
    The financial statements of the Company for each of the two fiscal years in
the periods ended January 31, 1998 and 1997, appearing in this Prospectus and
Registration Statement have been audited by Schwartz, Levitsky, Feldman,
Chartered Accountants, as set forth in its report thereon appearing elsewhere
herein and in the Registration Statement, and are included in reliance upon such
report given upon the authority of such firm as an expert in accounting and
auditing.
 
                             ADDITIONAL INFORMATION
 
    The Company has filed with the Commission a Registration Statement under the
Act with respect to the Common Stock and Warrants offered hereby. This
Prospectus omits certain information contained in the Registration Statement and
the exhibits thereto, and references are made to the Registration Statement and
the exhibits thereto for further information with respect to the Company and the
Common Stock and Warrants offered hereby. Statements contained herein concerning
the provisions of any documents are not necessarily complete, and in each
instance reference is made to the copy of such document filed as an exhibit to
the Registration Statement. Each such statement is qualified in its entirety by
such reference. The Registration Statement, including exhibits and schedules
filed therewith, may be inspected without charge at the public reference
facilities maintained by the Commission at Judiciary Plaza, 450 Fifth Street,
N.W., Room 1024, Washington, D.C. 20549 and at the regional offices of the
 
                                       43
<PAGE>
Commission located at 7 World Trade Center, Suite 1300, New York, New York
10048, and Northwestern Atrium Center, 500 West Madison Street, Suite 1400,
Chicago, Illinois 60661. Copies of such materials may be obtained from the
Public Reference Section of the Commission, Judiciary Plaza, 450 Fifth Street,
N.W., Room 1024, Washington, D.C. 20549, and its public reference facilities in
New York, New York and Chicago, Illinois upon payment of the prescribed fees.
Electronic registration statements filed through the Electronic Data Gathering,
Analysis, and Retrieval System are publicly available through the Commission's
Website (http://www.sec.gov). At the date hereof, the Company was not a
reporting company under the Exchange Act.
 
                 INDEMNIFICATION FOR SECURITIES ACT LIABILITIES
 
    The Bylaws of the Company provide that the Company shall indemnify to the
fullest extent permitted by Canadian law directors and officers (and former
officers and directors) of the Company. Such indemnification includes all costs
and expenses and charges reasonably incurred in connection with the defense of
any civil, criminal or administrative action or proceeding to which such person
is made a party by reason of being or having been an officer or director of the
Company if such person was substantially successful on the merits in his or her
defense of the action and he or she acted honestly and in good faith with a view
to the best interests of the Company, and if a criminal or administrative action
that is enforced by a monetary penalty, such person had reasonable grounds to
believe his or her conduct was lawful.
 
    The Underwriting Agreement provides for reciprocal indemnification between
the Company and the Underwriters against certain liabilities in connection with
this Offering, including liabilities under the Securities Act.
 
    Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers and controlling persons of the Company
and the Underwriters pursuant to the foregoing provisions, or otherwise, the
Company has been advised that in the opinion of the Commission such
indemnification is against public policy as expressed in the Securities Act and
is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the Company of expenses,
incurred or paid by a director, officer or controlling person of the Company in
the successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person or by the Underwriters in connection
with the securities being registered, the Company will, unless in the opinion of
its counsel the matter has been settled by controlling precedent, submit to a
court of appropriate jurisdiction the question of whether such indemnification
by it is against public policy as expressed in the Securities Act and will be
governed by the final adjudication of such issue.
 
                                       44
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
                         COMBINED FINANCIAL STATEMENTS
                  AS AT JANUARY 31, 1998 AND JANUARY 31, 1997
                         TOGETHER WITH AUDITORS REPORT
 
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
                         COMBINED FINANCIAL STATEMENTS
 
                  AS AT JANUARY 31, 1998 AND JANUARY 31, 1997
 
                         TOGETHER WITH AUDITORS REPORT
 
                               TABLE OF CONTENTS
 
<TABLE>
<S>                                                                                 <C>
Report of Independent Auditors....................................................        F-2
 
Combined Balance Sheets...........................................................    F-3-F-4
 
Combined Statements of Income.....................................................        F-5
 
Combined Statements of Cash Flow..................................................    F-6-F-7
 
Notes to Combined Financial Statements............................................   F-8-F-20
</TABLE>
 
                                      F-1
<PAGE>
SCHWARTZ LEVITSKY FELDMAN
 
COMPTABLES AGREES, SENC
 
CHARTERED ACCOUNTANTS
 
MONTREAL, TORONTO, OTTAWA
 
                         REPORT OF INDEPENDENT AUDITORS
 
To the Board of Directors and Stockholders of
159653 Canada Inc. and Thermoplus Air Inc.
 
    We have audited the accompanying combined balance sheets of 159653 Canada
Inc. and Thermoplus Air Inc. (incorporated in Canada) as at January 31, 1998 and
1997 and the related combined statements of income, cash flows and changes in
stockholders' equity for each of the three years in the period ended January 31,
1998. These combined financial statements are the responsibility of the
companies' management. Our responsibility is to express an opinion on these
combined financial statements based on our audits.
 
    We conducted our audits in accordance with generally accepted auditing
standards in the United States of America. Those standards require that we plan
and perform an audit to obtain reasonable assurance whether the financial
statements are free of material misstatements. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe that our audits provide a
reasonable basis for our opinion.
 
    In our opinion, the combined financial statements referred to above present
fairly , in all material respects, the financial position of 159653 Canada Inc.
and Thermoplus Air Inc. as at January 31, 1998 and 1997 and the combined results
of their operations and their cash flows for each of the three years in the
period ended January 31, 1998, in conformity with generally accepted accounting
principles in the United States of America.
 
Montreal, Quebec
April 22, 1998                                             Chartered Accountants
 
1980, rue Sherbrooke Ouest, 1D(e) etage
 
Montreal (Quebec) H3H 1E8
 
Tel: 514 937 6392
Fax: 514 933 9710
 
                                      F-2
<PAGE>
                   159653 CANADA INC. AND THERMOPLUS AIR INC.
 
                            COMBINED BALANCE SHEETS
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
   
<TABLE>
<CAPTION>
                                                               JULY 31,      JULY 31,    JANUARY 31,   JANUARY 31,
                                                                 1998          1997          1998         1997
                                                             ------------  ------------  ------------  -----------
<S>                                                          <C>           <C>           <C>           <C>
                                                             (UNAUDITED)   (UNAUDITED)
                                                               (NOTE 1)      (NOTE 1)
                                                                  $             $             $             $
ASSETS
  Cash.....................................................        19,325        17,739        28,155      52,001
  Accounts receivable (note 2).............................     4,330,661     3,795,317     3,043,829   2,658,816
  Grant receivable.........................................       --            --            --           25,019
  Inventory (note 3).......................................     3,369,057     2,956,325     3,817,448   2,505,610
  Income taxes receivable..................................       --            --            --           99,139
  Loans receivable (note 4)................................        84,055       --             87,306      --
  Prepaid expenses and sundry assets.......................       560,102       322,511       292,931     176,030
                                                             ------------  ------------  ------------  -----------
Total current assets.......................................     8,363,200     7,091,892     7,269,669   5,516,615
  Sinking funds............................................        20,636       --              8,038      --
  Loans receivable (note 4)................................        88,098       142,533        91,508     116,675
  Property, plant and equipment (note 5)...................     4,367,408     2,997,416     4,111,085   3,109,047
  Goodwill (note 6)........................................        40,192        49,965        44,528      54,133
                                                             ------------  ------------  ------------  -----------
Total assets...............................................    12,879,534    10,281,806    11,524,828   8,796,470
                                                             ------------  ------------  ------------  -----------
                                                             ------------  ------------  ------------  -----------
</TABLE>
    
 
                                      F-3
<PAGE>
                   159653 CANADA INC. AND THERMOPLUS AIR INC.
 
                            COMBINED BALANCE SHEETS
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
   
<TABLE>
<CAPTION>
                                                               JULY 31,      JULY 31,    JANUARY 31,   JANUARY 31,
                                                                 1998          1997          1998         1997
                                                             ------------  ------------  ------------  -----------
<S>                                                          <C>           <C>           <C>           <C>
                                                             (UNAUDITED)   (UNAUDITED)
                                                               (NOTE 1)      (NOTE 1)
                                                                  $             $             $             $
LIABILITIES
  Bank indebtedness (note 7)...............................     3,880,579     2,552,877     3,127,340   1,623,190
  Accounts payable and accrued expenses (note 8)...........     2,389,276     2,117,869     1,964,280   1,655,111
  Income taxes payable.....................................       153,980       126,308       200,502      --
  Current portion of long-term debt (note 9)...............       411,211       396,858       427,116     406,080
  Deferred revenue (note 12)...............................       116,490       127,781       127,857     114,235
                                                             ------------  ------------  ------------  -----------
Total current liabilities..................................     6,951,536     5,321,693     5,847,095   3,798,616
  Long-term debt (note 9)..................................     1,290,870       969,029     1,564,384   1,132,074
  Due to director (note 10)................................        64,837        90,895        67,345      97,341
  Other loans payable (note 11)............................       342,104       385,098       355,336     675,656
  Deferred revenue (note 12)...............................       531,914       407,766       470,058     373,401
  Deferred income taxes....................................       395,352       562,168       410,643     575,230
                                                             ------------  ------------  ------------  -----------
                                                                9,576,613     7,736,649     8,714,861   6,652,318
                                                             ------------  ------------  ------------  -----------
Minority interest in equity consolidated entity............       339,344       372,237       352,469     380,886
                                                             ------------  ------------  ------------  -----------
Commitments and Contingencies (note 16)
 
STOCKHOLDERS' EQUITY
  Capital Stock (note 13)..................................     1,934,695     1,934,695     1,934,695   1,934,695
  Retained Earnings (Deficit)..............................     1,225,532       204,937       618,180    (245,151)
  Cumulative Translation Adjustments.......................      (196,650)       33,288       (95,377)     73,722
                                                             ------------  ------------  ------------  -----------
Total stockholders' equity.................................     2,963,577     2,172,920     2,457,498   1,763,266
                                                             ------------  ------------  ------------  -----------
Total liabilities and stockholders' equity.................    12,879,534    10,281,806    11,524,828   8,796,470
                                                             ------------  ------------  ------------  -----------
                                                             ------------  ------------  ------------  -----------
</TABLE>
    
 
    The accompanying notes are an integral part of these combined financial
                                  statements.
 
                                      F-4
<PAGE>
                   159653 CANADA INC. AND THERMOPLUS AIR INC.
 
                         COMBINED STATEMENTS OF INCOME
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
   
<TABLE>
<CAPTION>
                                                                                     YEAR          YEAR         YEAR
                                                                                    ENDED         ENDED         ENDED
                                                     SIX MONTHS ENDED JULY 31,   JANUARY 31,   JANUARY 31,   JANUARY 31,
                                                        1998          1997           1998          1997         1996
                                                     -----------  -------------  ------------  ------------  -----------
<S>                                                  <C>          <C>            <C>           <C>           <C>
                                                          $             $             $             $             $
 
<CAPTION>
                                                     (UNAUDITED)   (UNAUDITED)
                                                      (NOTE 1)      (NOTE 1)
<S>                                                  <C>          <C>            <C>           <C>           <C>
Net sales..........................................   9,902,591      7,688,062     16,370,849    12,712,413   8,375,015
Cost of sales......................................   6,803,680      5,257,497     10,777,360     8,478,285   6,171,434
                                                     -----------  -------------  ------------  ------------  -----------
Gross profit.......................................   3,098,911      2,430,565      5,593,489     4,234,128   2,203,581
                                                     -----------  -------------  ------------  ------------  -----------
Operating expenses
  Selling..........................................   1,144,639      1,041,004      2,272,053     1,332,843   1,040,416
  General and administrative.......................     613,206        470,516      1,304,014     1,287,971     869,045
  Depreciation and amortization....................     238,169        122,896        461,100       289,256     252,722
  Interest expense.................................     164,564        114,885        287,677       334,493     292,063
                                                     -----------  -------------  ------------  ------------  -----------
                                                      2,160,578      1,749,301      4,324,844     3,244,563   2,454,246
                                                     -----------  -------------  ------------  ------------  -----------
Income (loss) before income taxes and extraordinary
  item and minority interest.......................     938,333        681,264      1,268,645       989,565    (250,665)
Income taxes (note 14).............................     330,981        231,175        405,314       223,697     108,254
                                                     -----------  -------------  ------------  ------------  -----------
Income (loss) before extraordinary item and
  minority interest................................     607,352        450,089        863,331       765,868    (358,919)
  Extraordinary item (note 15).....................      --            --             --            --        1,085,316
                                                     -----------  -------------  ------------  ------------  -----------
Income before minority interest....................      --            --             863,331       765,868     726,397
  Minority interest in earnings of consolidated
    entity.........................................      --            --             --             69,090      --
                                                     -----------  -------------  ------------  ------------  -----------
Net income.........................................     607,352        450,089        863,331       696,778     726,397
                                                     -----------  -------------  ------------  ------------  -----------
                                                     -----------  -------------  ------------  ------------  -----------
Net income per weighted average common stock.......        0.35           0.26           0.49          0.40        0.42
                                                     -----------  -------------  ------------  ------------  -----------
                                                     -----------  -------------  ------------  ------------  -----------
Weighted average number of common stock
  outstanding......................................   1,750,000      1,750,000      1,750,000     1,750,000   1,750,000
                                                     -----------  -------------  ------------  ------------  -----------
                                                     -----------  -------------  ------------  ------------  -----------
</TABLE>
    
 
                                      F-5
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
                       COMBINED STATEMENTS OF CASH FLOWS
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
   
<TABLE>
<CAPTION>
                                                 SIX MONTHS ENDED JULY
                                                          31,                YEAR         YEAR         YEAR
                                                ------------------------     ENDED        ENDED        ENDED
                                                                1997      JANUARY 31,  JANUARY 31,  JANUARY 31,
                                                   1998      -----------     1998         1997         1996
                                                -----------       $       -----------  -----------  -----------
                                                     $       (UNAUDITED)       $            $            $
                                                (UNAUDITED)   (NOTE 2)
                                                 (NOTE 1)
<S>                                             <C>          <C>          <C>          <C>          <C>
Cash flows from operating activities:
  Net income..................................      607,352      450,089      863,331     696,778      726,397
Adjustments to reconcile net income to net
  cash (used in) provided by operating
  activities:
  Depreciation and amortization...............      238,169      122,896      461,100     289,256      252,722
  Loss on disposal of capital assets..........                                --            6,000       --
  Minority interest in earnings of
    consolidated entity.......................                                --           69,090       --
  (Increase) decrease in accounts
    receivable................................   (1,286,832)  (1,136,501)    (385,013)   (527,956)    (532,189)
  (Increase) decrease in inventory............      448,391     (450,715)  (1,311,838)   (895,202)       1,823
  (Increase) decrease in income taxes
    receivable................................      (46,522)     225,447      299,641     171,087      (36,907)
  (Increase) decrease in prepaid expenses and
    sundry assets.............................     (267,171)    (146,481)    (116,901)    (69,866)       7,973
  Increase (decrease) in accounts payable and
    accrued expenses..........................      424,996      462,758      309,169      12,074     (302,987)
  Increase (decrease) in deferred income
    taxes.....................................      (15,291)     (13,062)    (164,587)      8,640       54,418
  Increase (decrease) in deferred revenue.....       50,489       47,911      110,279      91,749       88,537
                                                -----------  -----------  -----------  -----------  -----------
Net cash (used in) provided by operating
  activities..................................      153,581     (437,658)      65,181    (148,350)     259,787
                                                -----------  -----------  -----------  -----------  -----------
Cash flows from investing activities:
  Purchase of property, plant and equipment...     (632,425)     (87,474)  (1,978,811)   (556,323)    (195,213)
  Proceeds from disposal of property, plant
    and equipment.............................      --           233,428      233,428       7,467       --
  Acquisition of Goodwill.....................      --           --           --          (60,147)      --
                                                -----------  -----------  -----------  -----------  -----------
Net cash used in investing activities.........     (632,425)     145,954   (1,745,383)   (609,003)    (195,213)
                                                -----------  -----------  -----------  -----------  -----------
</TABLE>
    
 
                                      F-6
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
                 COMBINED STATEMENTS OF CASH FLOWS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
   
<TABLE>
<CAPTION>
                                                 SIX MONTHS ENDED JULY
                                                          31,                YEAR         YEAR         YEAR
                                                ------------------------     ENDED        ENDED        ENDED
                                                                1997      JANUARY 31,  JANUARY 31,  JANUARY 31,
                                                   1998      -----------     1998         1997         1996
                                                -----------               -----------  -----------  -----------
                                                                  $
                                                     $       (UNAUDITED)       $            $            $
                                                (UNAUDITED)   (NOTE 2)
                                                 (NOTE 1)
Cash flow from financing activities:
<S>                                             <C>          <C>          <C>          <C>          <C>
  Minority interest in equity consolidated
    entity....................................                                --          311,796       --
  Sinking funds...............................      (12,598)                   (8,038)     --           --
  Grant receivable............................                   (25,019)      25,019     (25,019)      --
  (Advances to) repayments from directors.....        2,508        6,446      (29,996)    118,732     (200,626)
  (Advances to) repayments from corporate
    shareholders..............................      --           --          (110,089)     --         (280,256)
  (Advances to) repayments from loan
    receivable................................        6,661      (25,858)      47,950      --           --
  Advances from (repayment of) long-term
    debt......................................     (289,419)    (172,267)     453,346     (30,606)     399,963
  Advances from (repayment of) loan payable...      (13,232)    (290,558)    (320,320)    626,406       13,238
  Advances (repayments) of bank
    indebtedness..............................      753,239      929,687    1,504,150     294,224       43,158
  Redemption of Class A shares................      --           --           --         (509,115)      --
                                                -----------  -----------  -----------  -----------  -----------
Net cash flow (used in) provided by financing
  activities..................................      447,159      422,431    1,562,022     786,418      (24,523)
                                                -----------  -----------  -----------  -----------  -----------
Effect of foreign currency exchange rate
  changes.....................................       22,855     (164,989)      94,334     (42,063)     (92,001)
                                                -----------  -----------  -----------  -----------  -----------
Net increase (decrease) in cash and cash
  equivalents.................................       (8,830)     (34,262)     (23,846)    (12,998)     (51,950)
  Beginning of period/year....................       28,155       52,001       52,001      64,999      116,949
                                                -----------  -----------  -----------  -----------  -----------
  End of period/year..........................       19,325       17,739       28,155      52,001       64,999
                                                -----------  -----------  -----------  -----------  -----------
                                                -----------  -----------  -----------  -----------  -----------
Supplemental disclosure of cash flow
  information
Cash paid (received) during the year
  Interest....................................      127,505      107,508      317,784     279,004      306,273
                                                -----------  -----------  -----------  -----------  -----------
                                                -----------  -----------  -----------  -----------  -----------
  Income taxes................................      110,000       95,000      358,315     116,460     (126,004)
                                                -----------  -----------  -----------  -----------  -----------
                                                -----------  -----------  -----------  -----------  -----------
</TABLE>
    
 
                                      F-7
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
                       COMBINED STATEMENTS OF CASH FLOWS
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
   
<TABLE>
<CAPTION>
                                                                    COMMON STOCK       CUMULATIVE
                                                               ----------------------   RETAINED    TRANSLATION
                                                                 NUMBER      AMOUNT     EARNINGS    ADJUSTMENTS
                                                               ----------  ----------  -----------  -----------
<S>                                                            <C>         <C>         <C>          <C>
                                                                               $            $            $
Balance (deficit) January 31, 1995...........................      91,292   1,934,713   (1,159,229)      45,108
Foreign currency translation.................................      --          --          --                25
Net income for the year......................................      --          --          726,397      --
                                                               ----------  ----------  -----------  -----------
Balance January 31, 1996.....................................      91,292   1,934,713     (432,832)      45,133
Foreign currency translation.................................                                            28,589
Net income for the year......................................      --          --          696,778
Redemption of shares over stated capital.....................         (25)        (18)    (509,697)     --
                                                               ----------  ----------  -----------  -----------
Balance January 31, 1997.....................................      91,267   1,934,695     (245,151)      73,722
Foreign currency translation.................................                                          (169,099)
Net income for the year......................................      --          --          863,331
                                                               ----------  ----------  -----------  -----------
Balance January 31, 1998.....................................      91,267   1,934,695      618,180      (95,377)
Foreign Currency translation.................................      --          --          --          (101,273)
Net Income for the period....................................      --          --          607,352      --
                                                               ----------  ----------  -----------  -----------
Balance July 31, 1998........................................      91,267   1,934,695    1,225,532     (196,650)
                                                               ----------  ----------  -----------  -----------
                                                               ----------  ----------  -----------  -----------
</TABLE>
    
 
                                      F-8
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
                     NOTES TO COMBINED FINANCIAL STATEMENTS
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
1. BASIS OF COMBINED FINANCIAL STATEMENTS PRESENTATION
 
   
    A)  The financial statements for the six months ended July 31, 1998 and 1997
are unaudited. The interim results are not necessarily indicative of the results
for any future period. In the opinion of management, the data in the financial
statements reflects all adjustments necessary for a fair presentation of the
results of the interim period disclosed. All adjustments are of a normal and
recurring nature.
    
 
   
    B) BASIS OF PRESENTATION
    
 
   
    These financial statements combine the accounts of an affiliated company,
which is under common control, Thermoplus Air Inc., and the consolidated
financial statements of 159653 Canada Inc., comprised of its wholly-owned
subsidiary Dectron Inc. and Dectron's wholly-owned subsidiaries, Fiber Mobile
Ltd., Dectron U.S.A. Inc. and its majority interest in Refplus Inc. All material
intercompany accounts and transactions have been eliminated.
    
 
   
    C) PRINCIPAL ACTIVITIES
    
 
    The companies 159653 Canada Inc., Dectron Inc., Ref Plus Inc., Thermoplus
Air Inc., Dectron U.S.A. Inc. and Fibermobile Ltd. were incorporated in Canada
on December 21, 1987, June 7, 1977, September 15, 1993, March 6, 1991, May 23,
1994, June 30, 1988 respectively.
 
    The companies are principally engaged in the production of dehumidification,
refrigeration, indoor air quality (IAQ) ventilation and air conditioning systems
in Canada and its distribution in Canada and the United States of America The
activity of 159653 Canada Inc. is immaterial in the aggregate, as its only
activity is to hold the investment in Dectron Inc.
 
   
    D) CASH AND CASH EQUIVALENTS
    
 
    Cash and cash equivalents include cash on hand, amounts due from banks and
any other highly liquid investments purchased with a maturity of three months or
less. The carrying amounts approximates fair value because of the short maturity
of these instruments.
 
   
    E) OTHER CURRENT FINANCIAL INSTRUMENTS
    
 
    The carrying amount of the companies' accounts receivables and payables
approximates fair value because of the short maturity of these instruments.
 
   
    F) LONG-TERM FINANCIAL INSTRUMENTS
    
 
   
    The fair value of each of the companies' long-term financial assets and debt
instruments is based on the amount of future cash flows associated with each
instrument, discounted using an estimate of what the companies' current
borrowing rate for similar instruments of comparable maturity would be.
    
 
   
    G) INVENTORY
    
 
    Inventory is valued at the lower of cost or market. Cost is determined on
the first-in, first-out basis.
 
                                      F-9
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
1. BASIS OF COMBINED FINANCIAL STATEMENTS PRESENTATION (CONTINUED)
   
    H) PROPERTY, PLANT AND EQUIPMENT
    
 
    Property, plant and equipment are recorded at cost and are amortized on the
basis over their estimated useful lives at the undernoted rates and methods:
 
<TABLE>
<S>                                   <C>        <C>
Building                              5%         Declining balance
Machinery and equipment               10%        Straight line or 20% declining
                                                 balance
Furniture and fixtures                10%        Straight line or 20% declining
                                                 balance
Computers                             15%        Straight line or 30% declining
                                                 balance
Leasehold improvements                20%        Straight line
Automobile                            30%        Straight line
Moulds and dies                       20%        Straight line
Equipment under capital lease         30%        Declining balance
</TABLE>
 
    Amortization for assets acquired during the year are recorded at one half of
the indicated rates which approximates when they were put into use.
 
   
    I) GOODWILL
    
 
    Goodwill is the excess of cost over the value of net assets acquired. It is
amortized on the straight line basis over ten years.
 
   
    J) INCOME TAXES
    
 
    The company accounts for income taxes under the provisions of statement of
financial accounting standards No. 109, which requires recognition of deferred
tax assets and liabilities for the expected future tax consequences of events
that have been included in the financial statements and tax returns. Deferred
income taxes are provided using the liability method. Under the liability
method, deferred income taxes are recognized for all significant temporary
differences between the tax and financial statements bases of assets and
liabilities.
 
   
    K) DEFERRED REVENUE
    
 
    The company has sold extended warranty contracts covering a period of four
years beyond the one year basic guarantee. The deferred revenue is recognized as
income over the four year period on a straight line basis commencing one year
from the sale of the contracts.
 
   
    L) The company maintains its books and records in Canadian dollars. Foreign
currency translations are translated using the temporal method. Under this
method, all monetary items are translated into Canadian funds at the rate of
exchange prevailing at balance sheet date. Non-monetary items are translated at
historical rates. Income and expenses are translated at the rate in effect on
the transaction dates. Transactions gains and losses are included in the
determination of earnings for the year/period.
    
 
    The translation of the combined financial statements from Canadian dollars
("CDN $") to United States dollars is performed for the convenience of the
reader. Balance sheet accounts are translated using closing exchange rates in
effect at the balance sheet date and income and expense accounts are translated
 
                                      F-10
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
1. BASIS OF COMBINED FINANCIAL STATEMENTS PRESENTATION (CONTINUED)
using an average exchange rate prevailing during each reporting period. No
representation is made that the Canadian dollar amounts could have been, or
could be, converted in United States dollars at the rates on the respective
dates and or at any other certain rates. Adjustments resulting from the
translation are included in the cumulative translation adjustments in
stockholders' equity.
 
   
    M) NET INCOME PER WEIGHTED AVERAGE COMMON STOCK
    
 
    Net income per common stock is computed by dividing net income for the year
by the weighted average number of common stock outstanding during the year.
 
   
    N) USE OF ESTIMATES
    
 
    The preparation of combined financial statements in conformity with
generally accepted accounting principles in the United States of America
requires management to make estimates and assumptions that effect certain
reported amounts of assets and liabilities and disclosures of contingent assets
and liabilities at the date of the combined financial statements and the
reported amounts of revenues and expenses during the reporting period. Actual
results could differ from these estimates.
 
   
    O) GOVERNMENT ASSISTANCE AND INVESTMENT TAX CREDITS
    
 
    Government assistance and investment tax credits are recorded on the accrual
basis and are accounted for as a reduction of related current or capital
expenditures.
 
2. ACCOUNTS RECEIVABLE
 
   
<TABLE>
<CAPTION>
                                                       JULY 31,
                                                         1997      JANUARY 31,   JANUARY 31,
                                                     ------------      1998          1997
                                         JULY 31,         $        ------------  ------------
                                           1998      (UNAUDITED)        $             $
                                       ------------    (NOTE 1)
                                            $
                                       (UNAUDITED)
                                         (NOTE 1)
<S>                                    <C>           <C>           <C>           <C>
Accounts receivable..................     4,388,381     3,837,077     3,105,239     2,701,546
Less: Allowance for doubtful
  accounts...........................        57,720        41,760        61,410        42,730
                                       ------------  ------------  ------------  ------------
Accounts receivable--net.............     4,330,661     3,795,317     3,043,829     2,658,816
                                       ------------  ------------  ------------  ------------
                                       ------------  ------------  ------------  ------------
</TABLE>
    
 
                                      F-11
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
3. INVENTORY
 
    Inventory is comprised of the following:
 
   
<TABLE>
<CAPTION>
                                                       JULY 31,
                                                         1997      JANUARY 31,   JANUARY 31,
                                                     ------------      1998          1997
                                         JULY 31,         $        ------------  ------------
                                           1998      (UNAUDITED)        $             $
                                       ------------    (NOTE 1)
                                            $
                                       (UNAUDITED)
                                         (NOTE 1)
<S>                                    <C>           <C>           <C>           <C>
Raw materials........................     1,983,630     1,865,365     2,247,631     1,580,976
Work-in-process......................       511,972       487,865       580,112       413,486
Finished goods.......................       873,455       603,095       989,705       511,148
                                       ------------  ------------  ------------  ------------
                                          3,369,057     2,956,325     3,817,448     2,505,610
                                       ------------  ------------  ------------  ------------
                                       ------------  ------------  ------------  ------------
</TABLE>
    
 
4. LOANS RECEIVABLE
 
    Loans receivable consists of the following:
 
   
<TABLE>
<CAPTION>
                                                          JULY 31,
                                                            1997      JANUARY 31,  JANUARY 31,
                                                        ------------     1998         1997
                                            JULY 31,         $        -----------  -----------
                                              1998      (UNAUDITED)        $            $
                                          ------------    (NOTE 1)
                                               $
                                          (UNAUDITED)
                                            (NOTE 1)
<S>                                       <C>           <C>           <C>          <C>
Loan receivable--private company
  (secured).............................        61,102       108,886      63,467      111,417
Loan receivable--corporate shareholders
  (unsecured)...........................       111,051        33,647     115,347        5,258
                                          ------------  ------------  -----------  -----------
                                               172,153       142,533     178,814      116,675
Current portion.........................        84,055       --           87,306       --
                                          ------------  ------------  -----------  -----------
                                                88,098       142,533      91,508      116,675
                                          ------------  ------------  -----------  -----------
                                          ------------  ------------  -----------  -----------
</TABLE>
    
 
    These loans are non-interest bearing with no specific terms of repayment
except for the current portion of which is expected to be repaid prior to
January 31, 1999 and the balance is not expected to be received prior than
February 1, 1999.
 
                                      F-12
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
5. PROPERTY, PLANT AND EQUIPMENT
 
   
<TABLE>
<CAPTION>
                                                                 JULY 31,
                                                                   1997      JANUARY 31,   JANUARY 31,
                                                               ------------      1998          1997
                                                   JULY 31,         $        ------------  ------------
                                                     1998      (UNAUDITED)        $             $
                                                 ------------    (NOTE 1)
                                                      $
                                                 (UNAUDITED)
                                                   (NOTE 1)
<S>                                              <C>           <C>           <C>           <C>
Land...........................................       229,843       141,478       238,733       380,956
Building.......................................     1,679,076       925,363     1,732,386       946,866
Machinery and manufacturing equipment..........     3,385,973     2,585,182     2,983,063     2,408,142
Furniture and fixtures.........................       338,446       325,900       322,367       311,007
Computers......................................       615,104       535,360       529,722       498,861
Automobile.....................................        26,851         5,907        15,181         6,045
Leasehold improvements.........................       340,140       410,839       340,833       403,283
Equipment under capital lease..................       --             20,405        52,139        20,879
                                                 ------------  ------------  ------------  ------------
Cost...........................................     6,615,433     4,950,434     6,214,424     4,976,039
                                                 ------------  ------------  ------------  ------------
Less accumulated depreciation and amortization:
Building.......................................       195,488       145,498       174,779       139,016
Machinery and manufacturing equipment..........     1,106,564       882,206     1,005,575       827,241
Furniture and fixtures.........................       237,181       231,909       234,100       227,853
Computers......................................       413,313       361,731       381,279       347,886
Automobile.....................................         7,435         5,907         2,087         6,045
Leasehold improvement..........................       288,044       314,205       287,696       308,762
Equipment under capital lease..................       --             11,562        17,823        10,189
                                                 ------------  ------------  ------------  ------------
                                                    2,248,025     1,953,018     2,103,339     1,866,992
                                                 ------------  ------------  ------------  ------------
Net............................................     4,367,408     2,997,416     4,111,085     3,109,047
                                                 ------------  ------------  ------------  ------------
                                                 ------------  ------------  ------------  ------------
</TABLE>
    
 
6. GOODWILL
 
   
<TABLE>
<CAPTION>
                                                                   JULY 31,
                                                                     1997      JANUARY 31,  JANUARY 31,
                                                                  -----------     1998         1997
                                                      JULY 31,         $       -----------  -----------
                                                        1998      (UNAUDITED)       $            $
                                                     -----------   (NOTE 1)
                                                          $
                                                     (UNAUDITED)
                                                      (NOTE 1)
<S>                                                  <C>          <C>          <C>          <C>
Cost...............................................   $  53,588    $  58,782    $  55,660    $  60,148
Less: Accumulated amortization.....................      13,396        8,817       11,132        6,015
                                                     -----------  -----------  -----------  -----------
Net................................................      40,192       49,965       44,528       54,133
                                                     -----------  -----------  -----------  -----------
                                                     -----------  -----------  -----------  -----------
</TABLE>
    
 
                                      F-13
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
7. BANK INDEBTEDNESS
 
    The bank loan bears interest at the banks prime lending rate plus 1/2% per
annum (prime plus 1 1/2% at January 31, 1997) with interest payable monthly.
 
   
    The bank indebtedness is secured by a general assignment of book debts,
pledge of inventory under Section 427 of the Bank Act of Canada, general
security agreements providing a first floating charge over all assets. An amount
of $4,122,000 secured by all assets of the company including a first ranking
security in the amount of $3,435,000 on the proceeds of all risks insurance on
the property.
    
 
    The company finances its operations mainly through the use of Bankers
Acceptance bearing an average lending rate of prime.
 
8. ACCOUNTS PAYABLE AND ACCRUED EXPENSES
 
   
<TABLE>
<CAPTION>
                                                           JULY 31,     JULY 31,    JANUARY 31,  JANUARY 31,
                                                             1998         1997         1998         1997
                                                          -----------  -----------  -----------  -----------
                                                               $            $            $            $
                                                          (UNAUDITED)  (UNAUDITED)
                                                           (NOTE 1)     (NOTE 1)
<S>                                                       <C>          <C>          <C>          <C>
Accounts payable and accrued expenses are comprised of
  the following:
  Trade payable.........................................   1,624,708    1,385,792    1,285,294    1,015,118
  Accrued expenses......................................     764,568      732,077      678,986      639,993
                                                          -----------  -----------  -----------  -----------
                                                           2,389,276    2,117,869    1,964,280    1,655,111
                                                          -----------  -----------  -----------  -----------
                                                          -----------  -----------  -----------  -----------
</TABLE>
    
 
9. LONG-TERM DEBT
 
   
<TABLE>
<CAPTION>
                                                               JULY 31,      JULY 31,    JANUARY 31,   JANUARY 31,
                                                                 1998          1997          1998          1997
                                                             ------------  ------------  ------------  ------------
                                                                  $             $             $             $
                                                             (UNAUDITED)   (UNAUDITED)
                                                               (NOTE 1)      (NOTE 1)
<C>        <S>                                               <C>           <C>           <C>           <C>
       a)  Balance of sale secured by land and building
             plus rent, present and future on the building,
             without interest, repayable in semi-annual
             repayment of $40,078 due April and October.
             Maturing October 2000.........................       192,913       --            240,451       --
       b)  Immigration loan secured by a first ranking
             universal hypothec on the universality of the
             property, moveable and immovable, present and
             future and corporeal and incorporeal, bearing
             interest at 5.21% per annum due on November
             2002..........................................       462,994       --            480,901       --
                                                             ------------                ------------
 
           Balance Carried Forward.........................       655,907       --            721,352       --
</TABLE>
    
 
                                      F-14
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
9. LONG-TERM DEBT (CONTINUED)
 
   
<TABLE>
<CAPTION>
                                                               JULY 31,      JULY 31,    JANUARY 31,   JANUARY 31,
                                                                 1998          1997          1998          1997
                                                             ------------  ------------  ------------  ------------
                                                                  $             $             $             $
                                                             (UNAUDITED)   (UNAUDITED)
                                                               (NOTE 1)      (NOTE 1)
<C>        <S>                                               <C>           <C>           <C>           <C>
                                                    ---------  ---------  ---------  ---------
           Balance Brought Forward................    655,907     --        721,352     --
 
       c)  Bank term loan bearing interest at
             prime plus 1% per annum repayable in
             monthly capital repayment of $1,540.
             Maturing April 2002..................     66,692     --         78,509     --
       d)  Bank loan, bearing interest bank prime
             rate plus 1% repayable in monthly
             instalments of $5,224 and a last
             instalment of $5,229 plus interest.
             Maturing on November 1, 2001.........    201,183     --        240,308     --
       e)  Loan secured by providing land and a
             personal guarantee from a director as
             collateral bearing interest at prime
             plus 1% repayable by monthly capital
             repayments of $1,374.................     42,806     64,368     52,706     74,773
       f)  The loan from Societe Developpement
             Industriel du Quebec bearing interest
             at a rate approximately prime plus
             1.50% which is deferred and
             capitalized for the minimum of either
             12 months or when the accumulated
             interest is greater than 10% of the
             loan advance, repayable in annual
             payments commencing June 30, 1997 at
             a rate of 15% of the prior year's net
             income to a maximum of $34,350 per
             annum................................    109,739    149,716    113,983    160,293
       g)  Bank term loan secured by machinery and
             equipment bearing interest at prime
             plus 1.75% repayable in monthly
             capital repayment of $2,863. Maturing
             May 2000.............................     27,558     66,507     45,800     86,612
       h)  Small business loan payable, secured by
             machinery and equipment, repayable in
             monthly instalments of $2,542 plus
             interest at prime plus 1.75%.
             Maturing February 2000...............     47,622     84,452     63,479    105,642
                                                    ---------  ---------  ---------  ---------
           Balance Carried Forward................  1,151,507    365,043  1,316,137    427,320
                                                    ---------  ---------  ---------  ---------
</TABLE>
    
 
                                      F-15
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
9. LONG-TERM DEBT (CONTINUED)
 
   
<TABLE>
<CAPTION>
                                                               JULY 31,      JULY 31,    JANUARY 31,   JANUARY 31,
                                                                 1998          1997          1998          1997
                                                             ------------  ------------  ------------  ------------
                                                                  $             $             $             $
                                                             (UNAUDITED)   (UNAUDITED)
                                                               (NOTE 1)      (NOTE 1)
<C>        <S>                                               <C>           <C>           <C>           <C>
 
           Balance Brought Forward................  1,151,507    365,043  1,316,137    427,320
 
       i)  Small business investment loan secured
             by a hypothec on specific equipment
             plus a personal guarantee from a
             director of the company bearing
             interest at prime plus 1.75%
             repayable by monthly capital
             instalments of $2,046................     87,980    107,308    103,652    136,313
       j)  Bank term loan secured by a first
             ranking universal hypothec on the
             universality of the property,
             moveable and immoveable, present and
             future and corporeal and incorporeal,
             bearing interest at 7.99% per annum
             repayable in monthly capital
             repayments of $574 plus a final
             repayment of $69,205 in December
             2002.................................     95,347     --        102,477     --
       k)  Loan secured by a universal hypothec on
             land and building, plus floating
             charge on all other assets bearing
             interest at prime plus 4% repayable
             by monthly capital repayment of
             $1,718...............................    132,284    170,500    147,705    180,030
       l)  Loan secured by a first and fixed
             mortgage charge on the land and
             building and a floating charge on all
             other assets, bearing interest at
             9 1/2% repayable by monthly capital
             repayments of $6,870.................    224,883    348,255    274,801    378,619
       m)  Bank term loan secured by equipment
             bearing interest at prime plus 1.75%
             repayable by monthly capital
             repayments of $3,094 repaid during
             the year.............................     --        129,991     --        151,572
       n)  Bank term loan secured by equipment
             bearing interest at prime plus 2%
             repayable by monthly capital
             repayments of $3,772 repaid during
             the year.............................     --        145,106     --        170,750
                                                    ---------  ---------  ---------  ---------
           Balance Carried Forward................  1,692,001  1,266,203  1,944,772  1,444,604
                                                    ---------  ---------  ---------  ---------
</TABLE>
    
 
                                      F-16
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
9. LONG-TERM DEBT (CONTINUED)
 
   
<TABLE>
<CAPTION>
                                                               JULY 31,      JULY 31,    JANUARY 31,   JANUARY 31,
                                                                 1998          1997          1998          1997
                                                             ------------  ------------  ------------  ------------
                                                                  $             $             $             $
                                                             (UNAUDITED)   (UNAUDITED)
                                                               (NOTE 1)      (NOTE 1)
<C>        <S>                                               <C>           <C>           <C>           <C>
           Balance Brought Forward................  1,692,001  1,266,203  1,944,772  1,444,604
       o)  Loan payable secured by Fonds D'Alde
             Aux Entreprise bearing interest at
             10.50% repayable in 60 monthly
             instalments once accumulated interest
             reaches 30% of loan repaid during the
             year.................................     --         87,789     --         89,829
       p)  Other..................................     10,080     11,895     46,728      3,721
                                                    ---------  ---------  ---------  ---------
                                                    1,702,081  1,365,887  1,991,500  1,538,154
           Less: Current portion..................    411,211    396,858    427,116    406,080
                                                    ---------  ---------  ---------  ---------
                                                    1,290,870    969,029  1,564,384  1,132,074
                                                    ---------  ---------  ---------  ---------
                                                    ---------  ---------  ---------  ---------
</TABLE>
    
 
   
    Future principal payment obligations are as follows:
    
 
   
<TABLE>
<CAPTION>
                                                               JULY 31,      JULY 31,    JANUARY 31,   JANUARY 31,
                                                                 1998          1997          1998          1997
                                                             ------------  ------------  ------------  ------------
                                                                  $             $             $             $
                                                             (UNAUDITED)   (UNAUDITED)
                                                               (NOTE 1)      (NOTE 1)
<C>        <S>                                               <C>           <C>           <C>           <C>
           1998............................................       --            396,858       --            406,080
           1999............................................       411,211       397,613       427,116       406,852
           2000............................................       389,637       319,782       404,707       327,212
           2001............................................       343,019       241,823       356,286       247,442
           2002............................................       165,748         9,811       172,159        77,420
           2003............................................       392,466       --            586,577        73,148
           Subsequent to 2003..............................       --            --             44,655       --
                                                             ------------  ------------  ------------  ------------
                                                                1,702,081     1,365,887     1,991,500     1,538,154
                                                             ------------  ------------  ------------  ------------
                                                             ------------  ------------  ------------  ------------
</TABLE>
    
 
10. DUE TO DIRECTOR
 
    The amount due to director is unsecured, non-interest bearing and is due on
April 15, 2002.
 
11. OTHER LOANS PAYABLE
 
    These loans payable are non-interest bearing and are not expected to be
    repaid prior to February 1, 1999. An amount of $268,911 owed to a private
    company is due on April 15, 2002.
 
                                      F-17
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
12. DEFERRED REVENUE
 
   
<TABLE>
<CAPTION>
                                                                JULY 31,     JULY 31,    JANUARY 31,  JANUARY 31,
                                                                  1998         1997         1998         1997
                                                               -----------  -----------  -----------  -----------
                                                                    $            $            $            $
                                                               (UNAUDITED)  (UNAUDITED)
                                                                (NOTE 1)     (NOTE 1)
<S>                                                            <C>          <C>          <C>          <C>
Deferred revenue.............................................     648,404      535,447      597,915      487,636
Current portion..............................................     116,490      127,781      127,857      114,235
                                                               -----------  -----------  -----------  -----------
                                                                  531,914      407,766      470,058      373,401
                                                               -----------  -----------  -----------  -----------
                                                               -----------  -----------  -----------  -----------
 
Deferred revenue will be recognized as income as follows:
1998.........................................................      --          127,781       --          114,235
1999.........................................................     116,490      112,387      127,857      130,751
2000.........................................................     123,096       89,742      184,327      113,976
2001.........................................................     177,463       42,703      136,482       84,976
2002.........................................................     131,400      163,934       98,277       43,698
2003.........................................................      99,955       --           50,972       --
                                                               -----------  -----------  -----------  -----------
                                                                  648,404      535,547      597,915      487,636
                                                               -----------  -----------  -----------  -----------
                                                               -----------  -----------  -----------  -----------
</TABLE>
    
 
13. CAPITAL STOCK
 
   
    a) Authorized
     159653 Canada Inc.:
     An unlimited number of the following classes of shares without par value:
    
 
       Class F preference shares, 1% monthly non-cumulative, non-voting,
       redeemable at the paid up amount
 
       Class E preference shares, 1% monthly non-cumulative, voting, redeemable
       and retractable at the paid up amount
 
       Class D preference shares, 1% monthly non-cumulative, non-voting,
       redeemable and retractable at the paid up amount
 
       Class C preference shares, 1% monthly non-cumulative, voting, redeemable
       at the paid up amount
 
       Class B common shares, non-voting
 
       Class A common shares, voting
 
    Thermoplus Air Inc.:
 
    An unlimited number of the following classes of shares without par value:
 
       Class F preference shares, 10% non-cumulative dividend, non-voting,
       redeemable at the paid up amount
 
                                      F-18
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
13. CAPITAL STOCK (CONTINUED)
       Class E preference shares, 10% non-cumulative dividend, voting,
       redeemable and retractable at the paid up amount
 
       Class D preference shares 10% non-cumulative dividend, non-voting,
       redeemable and retractable at the paid up amount
 
       Class C preference shares, 10% non-cumulative dividend, voting,
       redeemable at the paid up amount
 
       Class B preference shares, non-cumulative dividend, voting
 
       Class A common shares
 
    b) Issued
 
   
<TABLE>
<CAPTION>
                                                            JULY 31,     JULY 31,    JANUARY 31,  JANUARY 31,
                                                              1998         1997         1998         1997
                                                           -----------  -----------  -----------  -----------
                                                                $            $            $            $
                                                           (UNAUDITED)  (UNAUDITED)
                                                            (NOTE 1)     (NOTE 1)
<C>           <S>                                          <C>          <C>          <C>          <C>
Thermoplus Air Inc.
      91,242  Class A common shares......................   1,934,525    1,934,525    1,934,525    1,934,525
      159653  Canada Inc.
   1,571,000  Class D shares.............................         152          152          152          152
          25  Class A shares.............................          18           18           18           18
                                                           -----------  -----------  -----------  -----------
                                                            1,934,695    1,934,695    1,934,695    1,934,695
                                                           -----------  -----------  -----------  -----------
                                                           -----------  -----------  -----------  -----------
</TABLE>
    
 
    c) Weighted Averaged Number of Common Shares
 
    For the purpose of determining earnings per shares the weighted average
number of common shares has been presented on a pro-forma basis, giving effect
to the following subsequent event:
 
    In March 1998, a newly incorporated holding company, Dectron Internationale
Inc. (the Registrant) has planned an initial public offering and the
shareholders of the companies will transfer all the outstanding shares of the
companies to the Registrant in exchange for 1,750,000 common shares of that
company. The transfer will be done in anticipation of an eventual initial public
offering. Accordingly, the total weighted average number of common shares on a
pro-forma basis is 1,750,000 common shares.
 
                                      F-19
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
14. INCOME TAXES
 
    Provision for income taxes consists of the following:
 
<TABLE>
<CAPTION>
                                                                               YEAR ENDED   YEAR ENDED   YEAR ENDED
                                                                               JANUARY 31,  JANUARY 31,  JANUARY 31,
                                                                                  1998         1997         1996
                                                                               -----------  -----------  -----------
<C>        <S>                                                                 <C>          <C>          <C>
                                                                                    $            $            $
       a)  Current...........................................................     531,383      250,284       90,024
           Deferred..........................................................    (126,069)     (26,587)      18,230
                                                                               -----------  -----------  -----------
                                                                                  405,314      223,697      108,254
                                                                               -----------  -----------  -----------
                                                                               -----------  -----------  -----------
       b)  Current income taxes consists of amount calculated at basic
             combined federal and provincial rates...........................     568,446      363,090      (91,974)
           Increase (decrease) resulting from:
           Application of losses carried forward from prior year.............     (20,224)     (43,808)      --
           Small business deduction..........................................     (22,984)     (23,495)     (23,382)
           Manufacturing and processing......................................     (72,051)     (37,955)      --
           Timing differences................................................      84,267       (7,548)     207,312
           Other.............................................................      (6,071)      --           (1,932)
                                                                               -----------  -----------  -----------
                                                                                  531,383      250,284       90,024
                                                                               -----------  -----------  -----------
                                                                               -----------  -----------  -----------
</TABLE>
 
    c) Deferred income taxes represent the tax benefits derived from timing
differences between amortization of plant and equipment and recognition of
warranty revenue charged to operations and amounts deducted from taxable income.
 
   
    d) The income tax provision for the six months period ended July 31, 1998
and 1997 have been estimated at the basic combined Federal and provincial rates.
    
 
15. EXTRAORDINARY ITEM
 
    During the 1996 fiscal year, the company Thermoplus Air Inc. filed a
proposal to its creditors under the provision of the Bankruptcy and Insolvency
Act which gave full payment to secured creditors who filed a proof of claim. The
transaction resulted in a one time forgiveness of debt (net of deferred income
taxes of $42,569) in the amount of $1,085,316. The total debts were settled for
$175,910.
 
    Income taxes on the forgiveness and the amounts written off during 1996
amounted to nil due to the application of losses carried forward from prior
years.
 
                                      F-20
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
16. COMMITMENTS
 
    a) The company is committed to payments under operating leases for its
premises totalling $192,097. Annual payments for the next three years are as
follows:
 
<TABLE>
<CAPTION>
                                                                      JANUARY 31,  JANUARY 31,
                                                                         1998         1997
                                                                      -----------  -----------
<S>                                                                   <C>          <C>
                                                                           $            $
1998................................................................      --          183,710
1999................................................................      85,810      183,710
2000................................................................      73,037      120,150
2001................................................................      33,250       --
                                                                      -----------  -----------
                                                                         192,097      487,570
                                                                      -----------  -----------
                                                                      -----------  -----------
</TABLE>
 
   
    b) The company is committed to make monthly payments of $2,680 in a sinking
fund which is given as security against the immigration loan. The annual
payments for the next five years are $32,160 per year:
    
 
   
17. SEGMENTED INFORMATION
    
 
   
<TABLE>
<CAPTION>
                                               SIX MONTHS ENDED JULY
                                                        31,                      YEAR ENDED JANUARY 31,
                                              ------------------------  ----------------------------------------
                                                              1997          1998          1997          1996
                                                 1998      -----------  ------------  ------------  ------------
                                              -----------       $            $             $             $
                                                   $       (UNAUDITED)
                                              (UNAUDITED)   (NOTE 1)
                                               (NOTE 1)
<S>                                           <C>          <C>          <C>           <C>           <C>
Breakdown of sales by geographic area is as
  follows:
    Canada..................................   3,641,207    2,768,302      5,698,411     5,003,503     2,148,159
    United States of America................   6,261,384    4,919,760     10,672,438     7,708,910     6,226,856
                                              -----------  -----------  ------------  ------------  ------------
                                               9,902,591    7,688,062     16,730,849    12,712,413     8,375,015
                                              -----------  -----------  ------------  ------------  ------------
                                              -----------  -----------  ------------  ------------  ------------
</TABLE>
    
 
18. ACQUISITION
 
    On February 1, 1996 the company acquired a 50.01% interest in Refplus Inc.
for $371,195. The acquisition has been accounted for by the purchase method and
the results of operations at Refplus Inc. from February 1, 1996 have been
included in the combined financial statements.
 
    The allocation of purchase price is summarized as follows:
 
<TABLE>
<S>                                                               <C>
Current assets..................................................  $1,766,117
Capital assets..................................................    331,298
Deferred costs..................................................    155,834
Goodwill........................................................     60,147
Liabilities.....................................................  (1,630,405)
Minority interest...............................................   (311,796)
                                                                  ---------
Total acquisition cost..........................................  $ 371,195
                                                                  ---------
                                                                  ---------
</TABLE>
 
                                      F-21
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
   
19. PROFORMA INFORMATION
    
 
   
    The proforma unaudited consolidated balance sheet as at July 31, 1998 for
Dectron Internationale Inc. giving retroactive effect to the acquisitions
referred to in note 13(c) as follows:
    
 
   
         a) Dectron Internationale Inc.
           Proforma Consolidated Balance Sheet
           As at July 31, 1998
           (Unaudited)
    
 
   
<TABLE>
<S>                                                                  <C>
Assets
  Cash.............................................................  $   19,325
  Accounts receivable..............................................   4,330,661
  Inventory........................................................   3,369,057
  Prepaid expenses and sundry assets...............................     560,102
                                                                     ----------
Total current assets...............................................   8,279,145
 
  Sinking fund.....................................................      20,636
  Loan receivable (note c).........................................     113,196
  Property, plant and equipment....................................   4,367,408
  Goodwill (note d)................................................     134,822
                                                                     ----------
Total assets.......................................................  $12,915,207
                                                                     ----------
                                                                     ----------
Liabilities
  Bank indebtedness................................................  $3,880,579
  Accounts payable (note c)........................................   2,406,411
  Income taxes payable.............................................     153,980
  Current portion of long term debt................................     411,211
  Deferred revenue.................................................     116,490
                                                                     ----------
Total current liabilities..........................................   6,968,671
 
  Long term debt...................................................   1,290,870
  Due to shareholders (note f).....................................     348,072
  Due to director..................................................      64,837
  Other loan payable (note g)......................................     690,176
  Deferred revenue.................................................     531,914
  Deferred income taxes............................................     395,352
                                                                     ----------
                                                                     10,289,892
Stockholders' Equity
  Capital stock (note h)...........................................   1,596,433
  Retained earnings................................................   1,225,532
  Cumulative translation adjustments...............................    (196,650)
                                                                     ----------
                                                                      2,625,315
                                                                     ----------
                                                                     $12,915,207
                                                                     ----------
                                                                     ----------
</TABLE>
    
 
                                      F-22
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
   
19. PROFORMA INFORMATION (CONTINUED)
    
   
         b) Notes to the Proforma consolidated balance sheet
           July 31, 1998
           (Unaudited)
    
 
   
           BASIS OF PRESENTATION
    
 
   
           The proforma consolidated balance sheet reflects the acquisition of
           the minority interest by Dectron Inc. in Refplus Inc. and the 100%
           acquisition of Thermoplus Air Inc. The acquisition will be accounted
           for by the purchase method. All material Inter-company accounts and
           transactions have been eliminated.
    
 
   
           The proforma consolidated statement of Income and consolidated
           statement of cash flow is not presented because there is no impact on
           the earnings of the company and earnings per share.
    
 
   
           The following notes to the proforma consolidated balance sheet are
           only on items which are significantly changed from the audited
           combined balance sheet.
    
 
   
         c) Loans receivable
    
 
   
           Loans receivable consists of the following:
    
 
   
<TABLE>
<S>                                                                 <C>
Loan receivable--private company (secured)........................  $  61,100
Loan receivable--corporate shareholders (unsecured)...............     52,096
                                                                    ---------
                                                                    $ 133,196
                                                                    ---------
                                                                    ---------
</TABLE>
    
 
   
           These loans are non interest bearing with no specific terms of
           repayment and is not expected to be received prior to February 1,
           1999
    
 
   
         d) Goodwill
    
 
   
<TABLE>
<S>                                                                     <C>
Cost..................................................................  $ 145,539
Less: accumulated amortization........................................     10,717
                                                                        ---------
                                                                        $ 134,822
                                                                        ---------
                                                                        ---------
</TABLE>
    
 
   
         e) Accounts payable and accrued expenses
    
 
   
           Accounts payable and accrued expenses are comprised of the following:
    
 
   
<TABLE>
<S>                                                               <C>
Trade payable...................................................  $1,641,843
Accrued expenses................................................    764,568
                                                                  ---------
                                                                  2,406,411
                                                                  ---------
                                                                  ---------
</TABLE>
    
 
   
         f) Due to shareholders
    
 
   
           Due to shareholders are non interest bearing and are payable
           approximately 90 days subsequent to the proceeds received from the
           initial public offering except for the principal
    
 
                                      F-23
<PAGE>
                             159653 CANADA INC. AND
                              THERMOPLUS AIR INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
                       (AMOUNTS EXPRESSED IN US DOLLARS)
 
   
19. PROFORMA INFORMATION (CONTINUED)
    
   
           shareholder which is payable by 12 equal consecutive monthly payments
           of $20,393 beginning approximately 90 days subsequent to the proceeds
           from the initial public offering.
    
 
   
         g) Other loans payable
    
 
   
           These loans are non interest bearing and are repayable approximately
           90 days subsequent to having received the proceeds from the initial
           public offering except for an amount of $136,009 which is repayable
           by 12 equal consecutive monthly payments of $11,833 each beginning
           approximately 90 days subsequent to the proceeds received from the
           initial public offering. An amount of $258,897 owed to a private
           company is not due prior to April 15, 2002.
    
 
   
         h) Capital Stock
    
 
   
           The company, Dectron Internationale Inc., is authorized to issue an
           unlimited number of preferred and common shares without par value.
    
 
   
           Issued
    
 
   
<TABLE>
<S>                                                               <C>
1,750,000 Common shares.........................................  $1,596,433
                                                                  ---------
                                                                  ---------
</TABLE>
    
 
   
20. SUPPLEMENTAL INFORMATION
    
 
   
    The registrant Dectron Internationale Inc., was incorporated on March 30,
1998. As at the incorporation date and as at July 31, 1998 the company had no
assets or liabilities. As per the corporate restructure the company will own all
of the issued and outstanding shares of Dectron Inc., the operating company.
    
 
                                      F-24
<PAGE>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
    NO UNDERWRITER, DEALER, SALESMAN OR OTHER PERSON HAS BEEN AUTHORIZED TO GIVE
ANY INFORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE CONTAINED IN
THIS PROSPECTUS, AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATION MUST
NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE COMPANY. THIS PROSPECTUS
DOES NOT CONSTITUTE AN OFFER OR SOLICITATION TO ANY PERSON IN ANY JURISDICTION
WHERE SUCH OFFER OR SOLICITATION WOULD BE UNLAWFUL. NEITHER DELIVERY OF THIS
PROSPECTUS NOR ANY COMMON STOCK SALE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES,
CREATE ANY IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF THE
COMPANY SINCE THE DATE HEREOF.
                            ------------------------
 
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                    PAGE
                                                    -----
<S>                                              <C>
Prospectus Summary.............................           1
The Offering...................................           6
Summary Combined Financial Information.........           7
Risk Factors...................................           8
Dilution.......................................          15
Capitalization.................................          16
Use of Proceeds................................          17
Dividend Policy................................          18
Management's Discussion and Analysis of
  Financial Condition and Results of
  Operations...................................          19
Business.......................................          24
Management.....................................          30
Principal Stockholders.........................          34
Certain Transactions...........................          35
Description of Securities......................          37
Tax Aspects of the Offering....................          38
Shares Eligible for Future Sale................          40
Underwriting...................................          41
Legal Matters..................................          43
Experts........................................          43
Additional Information.........................          43
Indemnification of Securities Act
  Liabilities..................................          44
Financial Statements...........................         F-1
</TABLE>
    
 
                            ------------------------
 
    UNTIL       , 1998 (25 DAYS AFTER THE DATE OF THIS PROSPECTUS), ALL DEALERS
EFFECTING TRANSACTIONS IN THE COMPANY'S SECURITIES, WHETHER OR NOT PARTICIPATING
IN THIS DISTRIBUTION, MAY BE REQUIRED TO DELIVER A PROSPECTUS. THIS IS IN
ADDITION TO THE OBLIGATION OF DEALERS TO DELIVER A PROSPECTUS WITH RESPECT TO
THEIR UNSOLD ALLOTMENTS OR SUBSCRIPTIONS.
 
                                    DECTRON
                              INTERNATIONALE INC.
 
                        1,000,000 SHARES OF COMMON STOCK
 
                    1,000,000 COMMON STOCK PURCHASE WARRANTS
 
                             ---------------------
 
                                   PROSPECTUS
 
                             ---------------------
 
                           J.P. TURNER & COMPANY, LLC
                       KLEIN MAUS AND SHIRE INCORPORATED
 
                                     , 1998
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                                    PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 24. INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
    The Bylaws of the Company provide that the Company shall indemnify directors
and officers of the Company. The pertinent section of Canadian law is set forth
below in full. In addition, upon effectiveness of this registration statement,
management intends to obtain officers and directors liability insurance.
 
    See the second and third paragraphs of Item 28 below for information
regarding the position of the Securities and Exchange Commission (the
"Commission") with respect to the effect of any indemnification for liabilities
arising under the Securities Act of 1933, as amended (the "Securities Act").
 
    Section 136 of the Canadian Business Corporation Act provides as follows:
 
        (1) INDEMNIFICATION OF DIRECTORS--A corporation may indemnify a director
    or officer of the corporation, a former director or officer of the
    corporation or a person who acts or acted at the corporation's request as a
    director or officer of a body corporate of which the corporation is or was a
    stockholder or creditor, and his or her heirs and legal representatives,
    against all costs, charges and expenses, including an amount paid to settle
    an action or satisfy a judgment, reasonably incurred by him or her in
    respect of any civil, criminal or administrative action or proceeding to
    which he or she is a party by reason of being or having been a director or
    officer of such corporation or body corporate, if,
 
           (a) he or she acted honestly and in good faith with a view to the
       best interests of the corporation; and
 
           (b) in the case of a criminal or administrative action or proceeding
       that is enforced by a monetary penalty, he or she has reasonable grounds
       for believing that his or her conduct was lawful.
 
        (2) INDEMNIFICATION--A corporation may, with the approval of the court,
    indemnify a person referred to in subsection (1) in respect of an action by
    or behalf of the corporation or body corporate to procure a judgment in its
    favor, to which the person is made a party by reason of being or having been
    a director or an officer of the corporation or body corporate, against all
    costs, charges and expenses reasonably incurred by the person in connection
    with such action if he or she fulfills the conditions set out in clauses
    (1)(a) and (b).
 
        (3) INDEMNIFICATION--Despite anything in this section, a person referred
    to in subsection (1) is entitled to indemnity from the corporation in
    respect of all costs, charges and expenses reasonably incurred by him in
    connection with the defense of any civil, criminal or administrative action
    or proceeding to which he or she is made a party by reason of being or
    having been a director or officer of the corporation or body corporate, if
    the person seeking indemnity;
 
           (a) was substantially successful on the merits in his or her defense
       of the action or proceeding; and
 
           (b) fulfills the conditions set out in clauses (1)(a) and (b).
 
        (4) LIABILITY INSURANCE--A corporation may purchase and maintain
    insurance for the benefit of any person referred to in subsection (1)
    against any liability incurred by the person,
 
           (a) in his or her capacity as a director or officer of the
       corporation, except where the liability relates to the person's failure
       to act honestly and in good faith with a view to the best interests of
       the corporation; or
 
           (b) in his or her capacity as a director or officer of another body
       corporate where the person acts or acted in that capacity at the
       corporation's request, except where the liability relates
 
                                      II-1
<PAGE>
       to the person's failure to act honestly and in good faith with a view to
       the best interests of the body corporate.
 
        (5) APPLICATION TO COURT--A Corporation or a person referred to in
    subsection 91 may apply to the court for an order approving an indemnity
    under this section and the court may so order and make any further order it
    thinks fit.
 
        (6) INDEMNIFICATION--Upon application under subsection (5), the court
    may order notice to be given to any interested person and such person is
    entitled to appear and be heard in person or by counsel.
 
ITEM 25. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION
 
    The following is a statement of the estimated expenses to be paid by the
Company in connection with the issuance and distribution of the securities being
registered:
 
<TABLE>
<S>                                                              <C>
SEC Registration Fee...........................................  $ 6,424.55
NASD Filing Fee................................................    2,700.00
Nasdaq Listing Fees*...........................................   15,000.00
Financial Advisory Fees........................................   96,000.00
Printing Engraving Expenses*...................................   50,000.00
Legal Fees and Expenses*.......................................  138,500.00
Accounting Fees and Expenses*..................................  120,000.00
Blue Sky Fees and Expenses*....................................   70,000.00
Non-Accountable Expense Allowance..............................  243,750.00
Transfer Agent and Registrar Fees and Expenses*................    2,500.00
Miscellaneous*.................................................   28,425.45
                                                                 ----------
Total..........................................................  $773,350.00
                                                                 ----------
                                                                 ----------
</TABLE>
 
- ------------------------
 
*   estimate
 
ITEM 26. RECENT SALES OF UNREGISTERED SECURITIES
 
   
    In the past three years the Company has issued shares of its unregistered
securities only in connection with the Restructuring, as described below. The
shares issued in the Restructuring were issued without registration pursuant to
Section 4(2) of the Securities Act of 1933.
    
 
    Immediately prior to the effective date of the Registration Statement of
which this Prospectus forms a part, the Company restructured its corporate
structure ("Restructuring"). In order to complete the Restructuring, (i)
Dectron, which prior to the Restructuring owned a majority interest in Refplus,
acquired the minority interests in Refplus, which included both common stock and
preferred stock (and assumed Refplus' loan payables of approximately
Cdn$125,000, which amount is reflected in the combined financial statements
elsewhere in this Prospectus and is included in the Cdn$1,149,050 number
mentioned below), then (ii) Dectron acquired all of the outstanding securities
of Thermoplus, which included both Common Stock and preferred stock, and assumed
Thermoplus' parent company's loan payables (approximately Cdn$497,000, which
amount is included in the Cdn$1,149,050 number mentioned below), then (iii) the
Company acquired all of the issued and outstanding securities of Dectron. The
Refplus and Thermoplus loans payable represent the repayment of loans made to
such companies by their shareholders. In connection with the Restructuring, the
Company issued 1,750,000 shares of Common Stock and promissory notes in the
aggregate amount of Cdn$1,049,050. Of this amount, Cdn$557,050 (or approximately
U.S.$400,000) will be repaid out of the proceeds of this Offering. Of these
amounts, an aggregate amount
 
                                      II-2
<PAGE>
of 1,693,044 shares of Common Stock and promissory notes in the aggregate amount
of Cdn$592,000 were issued to Ness Lakdawala, the Company's President, and his
affiliates.
 
ITEM 27. EXHIBITS
 
   
<TABLE>
<C>        <S>
    **1.1  Form of Underwriting Agreement
   ***3.1  Bylaws of Registrant
    **3.2  Articles of Incorporation
    **4.1  Form of Underwriters' Warrant
    **4.2  Form of Public Warrant Agreement
   ***4.3  Specimen Common Stock Certificate
   ***4.4  Specimen Warrant Certificate
     *5.1  Opinion of Gersten, Savage, Kaplowitz & Fredericks, LLP
   **10.1  Form of Financial Consulting Agreement
    *10.2  1998 Stock Option Plan
  ***10.3  Lease of Company's Executive offices, 4300 Poirier Blvd., Montreal Quebec H4R-2C5
    *10.4  Form of Employment Agreement with Ness Lakdawala
   **10.5  Form of Shareholder's Restructuring Agreement
    *10.6  Form of Lock Up Agreement
   **21.1  List of Subsidiaries
    *23.1  Consent of Schwartz Levitsky Feldman, independent auditors
    *23.2  Consent of Gersten, Savage, Kaplowitz & Fredericks, LLP (incorporated into Exhibit
           5.1)
</TABLE>
    
 
- ------------------------
 
*   Filed herewith.
 
   
**  Previously filed.
    
 
   
*** To be filed by amendment.
    
 
ITEM 28. UNDERTAKINGS
 
    Insofar as indemnification for liabilities arising under the Act may be
permitted to directors, officers and controlling persons of the small business
issuer pursuant to any charter provision, by-law, contract arrangements,
statute, or otherwise, the registrant has been advised that in the opinion of
the Securities and Exchange Commission such indemnification is against public
policy as expressed in the Act and is, therefore, unenforceable. In the event
that a claim for indemnification against such liabilities (other than the
payment by the small business issuer in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person
in connection with the securities being registered, the small business issuer
will, unless in the opinion of its counsel the matter has been settled by
controlling precedent, submit to a court of appropriate jurisdiction the
question whether such indemnification by it is against public policy as
expressed in the Act and will be governed by the final adjudication of such
issue.
 
    The undersigned small business issuer hereby undertakes:
 
        (1) To file, during any period in which offers or sales are being made,
    a post-effective amendment to this registration statement: (i)To include any
    Prospectus required by section 10(a)(3) of the Act; (ii)To reflect in the
    Prospectus any facts or events arising after the effective date of the
    registration statement (or the most recent post-effective amendment thereof)
    which, individually or in the aggregate, represent a fundamental change in
    the information set forth in the registration statement; (iii)To include any
    material information with respect to the plan of distribution not previously
    disclosed in the registration statement or any material change to such
    information in the registration statement.
 
                                      II-3
<PAGE>
        (2) That, for the purpose of determining any liability under the Act,
    each such post-effective amendment shall be deemed to be a new registration
    statement relating to the securities offered therein, and the Offering of
    such securities at that time shall be deemed to be the initial bona fide
    Offering thereof.
 
        (3) To remove from registration by means of a post-effective amendment
    any of the securities being registered which remain unsold at the
    termination of the Offering.
 
        (4) For determining any liability under the Act, treat the information
    omitted from the form of Prospectus filed as part of this registration
    Statement in reliance upon Rule 430A and contained in a form of Prospectus
    filed by the small business issuer under Rule 424(b)(1), or (4) or 497(h),
    under the Act as part of this registration statement as of the time the
    Commission declared it effective.
 
        (5) For determining any liability under the Act, treat each
    post-effective amendment that contains a form of Prospectus as a new
    registration statement at that time as the initial bona fide Offering of
    those securities.
 
                                      II-4
<PAGE>
                                   SIGNATURES
 
   
    Pursuant to the requirements of the Act, the Registrant certifies that it
has reasonable grounds to believe that it meets all of the requirement for
filing on Amendment No. 1 to Form SB-2 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the Province of Ontario, Canada on August 25, 1998.
    
 
                                DECTRON INTERNATIONALE INC.
 
                                BY:  /S/ NESS LAKDAWALA
                                     -----------------------------------------
                                     Ness Lakdawala
                                     PRESIDENT AND CHIEF EXECUTIVE OFFICER
 
   
          SIGNATURE                        TITLE                    DATE
- ------------------------------  ---------------------------  -------------------
 
      /s/ NESS LAKDAWALA        President, Chief Executive   August 25, 1998
 ----------------------------     Officer and Chairman
        Ness Lakdawala
 
              *                 Executive Vice President     August 25, 1998
 ----------------------------     and Director
       Reinhold Kittler
 
              *                 Vice President of Human      August 25, 1998
 ----------------------------     Relations and Director
        Roshan Katrak
 
      /s/ MAURO PARISSI         Chief Financial Officer,     August 25, 1998
 ----------------------------     Secretary and Director
        Mauro Parissi
 
              *                 Director                     August 25, 1998
 ----------------------------
          Guy Houle
 
              *                 Executive Vice President     August 25, 1998
 ----------------------------     and Director
       Leena Lakdawala
 
    
 
   
* By Power of Attorney
    
 
                                      II-5
<PAGE>
                               INDEX TO EXHIBITS
 
   
<TABLE>
<C>        <S>
    **1.1  Form of Underwriting Agreement
   ***3.1  The Company's By-Laws
    **3.2  Articles of Incorporation
    **4.1  Form of Underwriters' Warrant
    **4.2  Form of Public Warrant Agreement
   ***4.3  Specimen of Warrant Certificate
   ***4.4  Specimen Common Stock Certificate
     *5.1  Opinion of Gersten, Savage, Kaplowitz & Fredericks, LLP
   **10.1  Form of Financial Consulting Agreement
    *10.2  1998 Stock Option Plan
  ***10.3  Lease of Company's Executive Offices at 4300 Poirier Blvd., Montreal, Quebec
           H4R-2C5
    *10.4  Form of Employment Agreement with Ness Lakdawala
   **10.5  Form of Shareholders' Restructuring Agreement
    *10.6  Form of Lock Up Agreement
   **21.1  List of Subsidiaries
    *23.1  Consent of Schwartz Levitsky Feldman, independent auditors
    *23.2  Consent of Gersten, Savage, Kaplowitz & Fredericks, LLP (incorporated into
           Exhibit 5.1)
</TABLE>
    
 
- ------------------------
 
 *  Filed herewith.
 
   
**  Previously filed.
    
 
   
*** To be filed by amendment.
    
 
                                      II-6

<PAGE>
                                                                     Exhibit 5.1
 
                                                                 August 25, 1998
 
Dectron Internationale Inc.
4300 Poirier Blvd.
Montreal, Quebec H4R 2C5
Canada
 
Gentlemen:
 
    We have acted as counsel to Dectron Internationale Inc. (The "Company") in
connection with its filing of the registration statement on Form SB-2
(Registration No. 333, the "registration Statement") covering (i) 1,150,000
shares of common stock, no par value (the "Common Stock"), including 150,000
shares subject to an over-allotment option, (ii) 1,437,500 redeemable warrants
(the "Redeemable Warrants"), including 150,000 Redeemable Warrants subject to an
over-allotment option, with each Redeemable warrant entitling the holder to
purchase on share of Common Stock, and (iii) warrants to be issued to the
underwriter (the "Underwriters' Warrants") to purchase up to 150,000 additional
shares and/or 150,000 additional Redeemable Warrants, all as more particularly
described in the Registration Statement.
 
    In our capacity as counsel to the Company, we have examined the Company's
Certificate of Incorporation and By-laws, as amended to date, and the minutes
and other corporate proceedings of the Company.
 
    With respect to factual matters, we have relied upon statements and
certificates of officers of the Company. We have also reviewed such other
matters of law and examined and relied upon such other documents, records and
certificates as we have deemed relevant hereto. In all such examinations we have
assumed conformity with the original documents of all documents submitted to us
as conformed or photostatic copies, the authenticity of all documents submitted
to us as originals and the genuineness of all signature on all documents
submitted to us.
 
    On basis the forgoing, we are of the opinion that:
 
        the shares of Common Stock covered by the Registration Statement and the
    Common Stock issuable upon exercise of the Underwriters' Warrants have been
    validly authorized and will, when sold as contemplated by the Registration
    Statement, be legally issued, fully paid and non-assessable;
 
        the Redeemable Warrants covered by the Registration Statement and the
    Redeemable Warrants issuable upon exercise of the Underwriters' Warrants
    (connectively and the "Registered Warrants") will, when soled as
    contemplated by the Registration Statement, be legally issued and will
    constitute legal, valid and binding obligations of the Company; and
 
        the shares of Common Stock issuable upon exercise of the Redeemable
    warrants will, upon issuance and payments in accordance with the terms of
    the Registered Warrants, be legally issued, fully paid and non-assessable;
 
        We hereby consent to the filing of this opinion as an exhibit to the
    Registration Statement and to the reference made to us under the caption
    "Legal Matters" int he prospectus constituting part of the Registration
    Statement.
 
<TABLE>
<S>                             <C>  <C>
                                Very truly yours,
 
                                By:                   /s/ GSKF
                                     -----------------------------------------
                                            GERSTEN, SAVAGE, KAPLOWITZ &
                                                  FREDERICKS, LLP
</TABLE>

<PAGE>
                                                                     Exhibit 8.1
 
                       [SHAFFER & ASSOCIATES LETTERHEAD]
 
                                                                 August 25, 1998
 
Dectron Internationale Inc.
4300 Poirier Blvd.
Montreal, Quebec H4R 2C5
Canada
 
Gentlemen:
 
    You have requested our opinion as to certain Canadian federal income tax
considerations for persons not residents in Canada.
 
    In the opinion of Shaffer & Associates, special Canadian counsel to the
Company, the following are the principal Canadian federal income tax
considerations under the Income Tax Act (Canada) and the regulations thereunder
(collectively, the "Canadian Act'), the administrative practices of Revenue
Canada, Customs, Excise & Taxation and proposed amendments to the Canadian Act
and the regulations thereunder publicly announced by the Minister of Finance
prior to the date hereof generally applicable to acquiring, holding and
disposing of Common Stock and Warrants. There is no assurance that any proposed
amendments tot he Tax Act or the regulations thereunder will be enacted as
proposed, if at all. It is assumed that at all material times the Common Stock
and Warrants will be listed on NASDAQ, or some other Canadian or foreign stock
exchange. Currently, neither NASDAQ nor any other foreign stock exchange is
prescribed for the purpose of section 115 of the Canadian Act. Proposals in
former Bill C-69 which if enacted will have effect from April 29, 1995 will
prescribe NASDAQ and certain other foreign stock exchanges for the purposes of
section 115 of the Canadian Act. Comment is restricted to prospective investors
(each an "Investor") who for the purposes of the Canadian Act are not resident
in Canada, hold all such Common Stock and Warrants and will hold all Common
Stock acquired on exercise thereof, solely as capital property, who deal at
arm's length with the Company and whose warrants and Common Stock will not at
any material time constitute 'taxable Canadian property' for the purpose of the
Canadian Act. Generally, neither a share of Common Stock, nor a Warrant will
constitute "taxable Canadian property" of an Investor provided, among other
things, that the Company is a public company in that at least one class of its
shares are listed on a prescribed stock exchange in Canada. However, the
Ministry of Finance proposes that after April 26, 1995 shares listed on certain
U.S. stock exchanges, including NASDAQ, will not be 'taxable Canadian property"
provided either that the Investor did not hold such security as capita property
used in carrying on a business in Canada, or that neither the Investor nor
persons with whom the Investor did not deal at arm's length alone or together
owned 25% or more of the issued shares of any class of the Company at any time
in the five years immediately proceeding a disposition of the Common Stock or
Warrants. For these purposes, a right or option to acquire a share, including on
exercise of a Warrant, is considered to be equivalent to a share.
 
    This opinion does not take into account any provincial or foreign income tax
legislation or considerations nor does it take into account or anticipate any
changes in law or administrative practice including by way of judicial decision
or legislative action.
 
    This opinion is of a general nature and is not, and should not be construed
as, advice to any particular Investor as to Canadian Tax consequences applicable
to the Investor. Each Investor is urged to consult with the Investor's legal
professional advisors regarding tax and other legal consequences applicable to
the Investor's particular circumstances.
 
EXERCISE OF WARRANT
 
    An Investor will not incur liability for Canadian tax upon exercise of a
Warrant. The cost of the Investor of Common Stock acquired on exercise of a
Warrant will equal the adjusted cost base of the Warrant so exercised, plus any
amount paid by the Investor to exercise the Warrant.
<PAGE>
DIVIDENDS ON COMMON STOCK
 
    An Investor will be liable to pay Canadian withholding tax equal to 25% (or
such lesser rate as may be provided under an applicable tax treaty) of the gross
amount of any dividend actually or deemed to have been paid or credited to the
Investor on the Investor's Common Stock. An Investor who is a resident of the
United States for purposes of the Canada-U.S. Income Tax Convention is subject
to a lesser tax of 15% of the gross amount of any dividend actually or deemed to
have been paid or credited to the Investor on the investor's Common Stock if the
Investor holds less than 10% of the voting stock of the Company, or 5% if the
Investor holds 10% or more of the voting stock of the Company, The Company will
be required to withhold the tax from the gross amount of the dividend, and to
remit the tax to the Receiver General of Canada for the account of the Investor.
Investors who are entitled to reduced withholding tax under an applicable treaty
must provide appropriate evidence of that entitlement satisfactory tot he
Company.
 
DISPOSING OF COMMON STOCK
 
    An Investor will not incur liability for Canadian tax upon disposing of
Common Stock except where the Common Stock is redeemed or repurchased by the
Company, in which case a dividend could be deemed to result (see Dividends on
Common Stock above).
 
    We consent to the use of our name and opinion in connection with references
to Canadian laws, regulations, treaties and potential liabilities in Dectron
Internationale Inc.'s Registration Statement. We note that our name is
specifically referred to in the Registration Statement under the heading "Civil
Liabilities" and in connection with the information contained under the heading
"Tax Aspects of the Offering" and confirm that we are giving our opinion with
respect to the information indicated therein.
 
<TABLE>
<S>                             <C>  <C>
                                Very truly yours,
 
                                SHAFFER & ASSOCIATES
 
                                By:           /s/ SHAFFER & ASSOCIATES
                                     -----------------------------------------
</TABLE>

<PAGE>
                                                                    Exhibit 10.2


                              CURTIS INTERNATIONAL LTD.

                                1998 STOCK OPTION PLAN


                                     ARTICLE ONE
                              PURPOSE AND INTERPRETATION


     SECTION 1.01 PURPOSE.  The purpose of the Plan is to advance the interests
of the Corporation by encouraging equity participation in the Corporation
through the acquisition of Common Shares of the Corporation by directors,
officers and employees of, and certain other persons who provide services to,
the Corporation.

     SECTION 1.02 DEFINITIONS.  In the Plan, the following capitalized words and
terms shall have the following meanings:

     (a)  "ACT" means the CANADA BUSINESS CORPORATIONS ACT or its successor, as
          amended from time to time.

     (b)  "AFFILIATE" shall have the meaning ascribed thereto in the Securities
          Act.

     (c)  "ASSOCIATE" shall have the meaning ascribed thereto in the Securities
          Act.

     (d)  "BOARD OF DIRECTORS" means the board of directors of the Corporation
          as constituted from time to time and any committee of the board of
          directors which shall be comprised of at least two non-employee
          directors.

     (e)  "COMMON SHARES" means the common shares of the Corporation as
          constituted on the date hereof.

     (f)  "COMPETITOR" means any person engaged in a business that the Board of
          Directors determines competes or intends to compete with the business
          carried on by the Corporation and its Affiliates from time to time.

     (g)  "CORPORATION" means Curtis International Ltd., a corporation
          incorporated under the Act, and its successors from time to time.

     (h)  "DESIGNATED AFFILIATE" means the Affiliates of the Corporation
          designated by the Board of Directors for purposes of the Plan from
          time to time.

     (i)  "EXCHANGE" means, at any time, any stock exchange on which the Common
          Shares are listed, posted and called for trading.


                                           
<PAGE>

     (j)  "HOLDING COMPANY" shall have the meaning specified in Section 2.02
          hereof.

     (k)  "INSIDER" shall have the meaning ascribed thereto in the Securities
          Act, other than a person who is an Insider solely by virtue of being a
          director of senior officer of a subsidiary of the Corporation and any
          Associate of an Insider.

     (l)  "KEY CONTRIBUTORS" means a person who is a director, officer, employee
          or consultant engaged by the Corporation to assist the Corporation in
          the conduct and growth of its business.

     (m)  "ISSUER BID" shall have the meaning ascribed thereto in the Securities
          Act.

     (n)  "OPTION PERIOD" means the period of time an option may be exercised as
          specified in Subsection 2.07(a) hereof.

     (o)  "PARTICIPANT" means a participant under the Plan.

     (p)  "PLAN" means the share option plan provided for herein.

     (q)  "RRSP" shall have the meaning specified in Section 2.02 hereof.

     (r)  "SECURITIES LAWS" means, collectively, the applicable securities laws,
          regulations, schedules, prescribed forms, policy statements, notices,
          blanket rulings and other similar instruments of each of the
          jurisdictions in which the Corporation is or becomes a reporting
          issuer or equivalent and also includes, as the context so requires,
          the by-laws, rules, regulations and policies of any Exchange.

     (s)  "SHARE COMPENSATION ARRANGEMENT" means a stock option, stock option
          plan, employee stock purchase plan or any other compensation or
          incentive mechanism involving the issuance or potential issuance of
          securities of the Corporation to one or more of the following persons:
          (i) an employee or insider of the Corporation or of any of its
          subsidiaries; and (ii) any other person or company engaged to provide
          ongoing management or consulting services for the listed company or
          for any entity controlled by the listed company, including a share
          purchase from treasury which is financially assisted by the
          Corporation by way of a loan, guarantee or otherwise.

     (t)  "TAKE-OVER BID" shall have the meaning ascribed thereto in the
          Securities Act.



                                          2
<PAGE>

                                     ARTICLE TWO
                                  SHARE OPTION PLAN

     SECTION 2.01 THE PLAN.  The Plan is hereby established for Key Contributors
of the Corporation and Designated Affiliates.

     SECTION 2.02 PARTICIPANTS.  Participants in the Plan shall be Key
Contributors of the Corporation or any of its Designated Affiliates (including
officers thereof, whether or not directors) who, by the nature of their
positions are, in the opinion of the Board of Directors, upon the recommendation
of the President of the Corporation, in a position to contribute to the success
of the Corporation.  At the request of any Participant, options granted to such
Participant may be issued to and registered in the name of a personal holding
company wholly-owned by such Participant ("Holding Company") or to a registered
retirement savings plan established by such Participant ("RRSP") and, in such
event, the provisions of this Plan shall apply to such options mutatis mutadis
as though they were issued to and registered in the name of the Participant.

     SECTION 2.03 AMOUNT OF OPTIONS.  The determination regarding the aggregate
number of Common Shares subject to options in favour of any Participant will
take into consideration the Participant's present and potential contribution to
the success of the Corporation and shall be determined from time to time by the
Board of Directors.  The aggregate number of Common Shares issuable upon the
exercise of options pursuant to this Plan and any other Share Compensation
Arrangements, subject to adjustment or increase of such number pursuant to
Section 2.10 hereof, shall be 400,000 Common Shares.  The maximum number of
Common Shares reserved for issuance to any one Participant upon the exercise of
options shall not exceed 5% of the total number of Common Shares outstanding
immediately prior to such issuance.

     SECTION 2.04 LIMITS WITH RESPECT TO INSIDERS.

     (a)  The number of Common Shares issuable to Insiders pursuant to options
          granted under the Plan, together with Common Shares issuable to
          Insiders under any other Share Compensation Arrangement of the
          Corporation, shall not:

          (i)  exceed 10% of the number of Common Shares outstanding immediately
               prior to the grant of any such option; or

          (ii) result in the issuance to Insiders, within a one year period, of
               in excess of 10% of the number of Common Shares outstanding
               immediately prior to the grant of any such option.

     (b)  The number of Common Shares issuable to any Insider and such Insider's
          Associates pursuant to options granted under the Plan, together with 


                                          3
<PAGE>

          Common Shares issuable to such Insider or such Insider's Associates
          under any other Share Compensation Arrangement of the Corporation
          shall not, within a one year period, exceed 5% of the number of Common
          Shares outstanding immediately prior to the grant of any such option.

     (c)  Any Common Shares issuable pursuant to an option granted to a
          Participant prior to the Participant becoming an Insider shall be
          excluded for the purposes of the limits set out in Subsections 2.04(a)
          and 2.04(b) hereof.

     (d)  The Company's President, Aaron Herzog and Vice-President, Jacob Herzog
          shall not be permitted to receive any options under this Plan.

     SECTION 2.05 PRICE.  The exercise price per Common Share shall be
determined by the Board of Directors at the time the option is granted, but such
price shall not be less than such price as is required or permitted as the
minimum exercise price under the Securities Laws, including the requirements of
any Exchange on which the Common Shares are listed.  The exercise price of all
options granted hereunder shall be at least 100% of the fair market value of the
Common Shares on the date of grant of the options as determined by the Board of
Directors.

     SECTION 2.06 LAPSE OPTIONS.  In the event that options granted under the
Plan are surrendered, terminate or expire without being exercised in whole or in
part, the Common Shares reserved for issuance but not purchased under such
lapsed options shall be available for subsequent options to be granted under the
Plan.

     SECTION 2.07 CONSIDERATION, OPTION PERIOD AND PAYMENT.

     (a)  The period during which options may be exercised shall be determined
          by the Board of Directors, in its discretion, to a maximum of ten
          years from the date the option is granted (the "Option Period"),
          except as the same may be reduced with respect to any option as
          provided in Sections 2.08 and 2.09 hereof respecting termination of
          employment or death of the Participant.

     (b)  Subject to any other provision of this Plan, an option may be
          exercised from time to time during the Option Period by delivery to
          the Corporation at its registered office of a written notice of
          exercise addressed to the Secretary of the Corporation specifying the
          number of Common Shares with respect to which the option is being
          exercised and accompanied by payment in full of the exercise price
          therefor.  Certificates for such Common Shares shall be issued and
          delivered to the Participant as soon as practicable following receipt
          of such notice and payment.  The Corporation may, at its discretion,
          as determined by the Board of Directors or its nominee administering
          the 


                                          4
<PAGE>

          Plan, accept in lieu of cash payment of the exercise price, the tender
          of Common Shares having a fair market value equal to the exercise
          price, a personal recourse note secured by a pledge against the Common
          Shares so issuable, an assignment to the Corporation of sufficient
          proceeds from the sale of Common Shares acquired on the exercise of
          the option consented to and acknowledged by a duly qualified
          investment dealer and accompanied by an irrevocable direction of the
          Participant exercising such option to such investment dealer to cause
          such payment to be made to the direction of the Corporation, or any
          combination of the foregoing.

     (c)  Except as set forth in Sections 2.08 and 2.09 hereof, no option may be
          exercised unless the Participant is, at the time of such exercise, a
          Key Contributor of or in the employ of the Corporation or any of its
          Designated Affiliates and shall have been continuously a Key
          Contributor since the grant of his or her option.  Absence on leave
          with the approval of the Corporation or a Designated Affiliate shall
          not be considered an interruption of employment for purposes of the
          Plan.

     (d)  The exercise of any option will be contingent upon receipt by the
          Corporation of cash payment of the full exercise price of the Common
          Shares which are the subject of the exercised option or such other
          arrangements for payment as are approved by the Board of Directors or
          its nominee under (b) above.  No Participant or his or her legal
          representatives, legatees or distributees will be, or will be deemed
          to be, a holder of any Common Shares with respect to which he or she
          was granted an option under the Plan, unless and until certificates
          for such Common Shares are issued to him or her under the terms of the
          Plan.

     (e)  Notwithstanding any other provision of this Plan or in any option
          granted to a Participant, the Corporation's obligation to issue Common
          Shares to a Participant pursuant to the exercise of an option shall be
          subject to:

          (i)  completion of such registration or other qualification of such
               Common Shares or obtaining approval of such regulatory
               authorities as the Corporation shall determine to be necessary or
               advisable in connection with the authorization, issuance or sale
               thereof;

          (ii) the listing of such Common Shares on any Exchange, on which the
               Common Shares are listed and posted for trading; and

         (iii) the receipt from the Participant of such representations,
               warranties, agreements and undertakings, including as to future
               dealings in such 



                                          5
<PAGE>

               Common Shares, as the Corporation or its counsel determines to be
               necessary or advisable in order to ensure compliance with all
               applicable securities laws.

     (f)  If there is a Take-over Bid or Issuer Bid made for all or any of the
          issued and outstanding Common Shares, then the Board of Directors may,
          by resolution, permit all options outstanding under the Plan to become
          immediately exercisable in order to permit Common Shares issuable
          under such options to be tendered to such bid.

     SECTION 2.08 TERMINATION OF EMPLOYMENT.  If a Participant shall:

     (a)  cease to be a Key Contributor of the Corporation or any of its
          Designated Affiliates as determined by the Board of Directors; or

     (b)  cease to be employed or engaged by the Corporation or any of its
          Designated Affiliates (and is not or does not continue to be a
          director or senior office thereof) for any reason (other than death,
          disability or retirement at or after age 70) or shall receive notice
          from the Corporation or any of its Designated Affiliates of the
          termination of his or her employment or engagement;

(collectively, "Termination") he or she or it may, but only within three months
next succeeding such Termination, exercise his or her or its options to the
extent that he or she or it was entitled to exercise such options at the date of
such Termination; provided that in no event shall such right extend beyond the
Option Period.  This section is subject to any agreement with any director or
senior officer of the Corporation or any of its Designated Affiliates with
respect to the rights of such director or senior office upon Termination or
change in control of the Corporation.  Notwithstanding the foregoing, if the
Termination is for cause from the acceptance by the Participant of an officer of
employment with a Competitor, or if such Participant accepts employment with a
Competitor following such Termination and prior to the date that the options
held by such Participant expire under this Section 2.08, then unless otherwise
determined by the Board of Directors, the entitlement of the Participant to
options previously granted under this Plan that remain unexercised, whether or
not previously granted under this Plan that remain unexercised, whether or not
previously vested, shall immediately terminate.  For purposes of this Plan,
employment with a competitor shall include acting on behalf of a Competitor in
any capacity, whether as a shareholder, director, officer, employee, advisor,
consultant, partner, lender or in any other capacity.  In addition to the
foregoing, notwithstanding any other provision of this Plan, all Common Shares
issued to Participants on their exercise of options granted under the Plan shall
remain subject to the right of the Corporation to repurchase such Common Shares
for cancellation following any Termination of the employment of such Participant
if such Participant accepts employment with a Competitor during the period of 12
months following the effective date of such Termination.  Such right of
repurchase may be exercised by the Corporation upon refunding the option
exercise price therefore paid by the Participant, such


                                          6
<PAGE>

payment to be made by the Corporation to the Participant or any subsequent
holder of such Common Shares as of the date such right is exercised by the
Corporation.  The Corporation shall cause notice of such right of repurchase to
be set forth on the certificates evidencing any Common Shares issued to a
Participant upon any exercise of options granted from time to time under the
Plan.

     SECTION 2.09 DEATH, DISABILITY OR RETIREMENT OF PARTICIPANT.  In the event
of the death, permanent disability or retirement at or after age 70 of a
Participant who is a Key Contributor of the Corporation or any of its Designated
Affiliates or who is an employee having been continuously in the employ of the
Corporation or any of its Designated Affiliates for one year from and after the
date of the granting of his or her option, the option therefore granted to him
or her shall be exercisable within the twelve months next succeeding such death,
disability or retirement (including the rights under Subsection 2.07(f) and
then, in the event of death, only:

     (a)  by the person or persons to whom the Participant's rights under the
          option shall pass by the Participant's will or the laws of descent and
          distribution; and

     (b)  to the extent that he or she was entitled to exercise the option at
          the date of his or her death, provided that in no event shall such
          right extend beyond the Option Period.

     SECTION 2.10 ADJUSTMENT IN SHARES SUBJECT TO THE PLAN.  In the event that:

     (a)  there is any change in the Common Shares of the Corporation through
          subdivisions or consolidation of the share capital of the Corporation,
          or otherwise;

     (b)  the Corporation declares a dividend on Common Shares payable in Common
          Shares or securities convertible into or exchangeable for Common
          Shares; or

     (c)  the Corporation issues Common Shares, or securities convertible into
          or exchangeable for Common Shares, in respect of, in lieu of, or in
          exchange for, existing Common Shares,

the number of Common Shares available for option, the Common Shares subject to
any option, and the option price thereof, shall be adjusted appropriately by the
Board of Directors in its sole discretion and such adjustment shall be effective
and binding for all purposes of the Plan.

     SECTION 2.11 EFFECTING GRANTS.  Subject to Section 3.04, the grant of
options under the Plan shall be affected by the execution and delivery of a
stock option agreement in such form which is consistent with the provisions of
the Plan as may be approved by the Board of Directors from time to time.



                                          7
<PAGE>

     SECTION 2.12   RECORD KEEPING.  The Corporation shall maintain a register
in which shall be recorded:

     (a)  the name and address of each Participant in the Plan; and

     (b)  the number of options granted to a Participant and the number of
          options outstanding.

                                    ARTICLE THREE
                                       GENERAL

     SECTION 3.01   TRANSFERABILITY.  The benefits, rights and options accruing
to any Participant in accordance with the terms and conditions of the Plan shall
not be transferable by the Participant except (i) from the Participant to his or
her Holding Company or RRSP or from a Holding Company or RRSP to the Participant
and, in either such event, the provisions of this Plan shall apply mutatis
mutandis as though they were originally issued to and registered in the name of
the Participant, or (ii) as otherwise specifically provided herein.  During the
lifetime of a Participant, all benefits, rights and options shall only be
exercised by the Participant or by his or her guardian or legal representative.

     SECTION 3.02   EMPLOYMENT.  Nothing contained in the Plan shall confer upon
any Participant any right with respect to employment or continuance of
employment with the Corporation or any Affiliate, or interfere in any way with
the right of the Corporation or any Affiliate to terminate the Participant's
employment at any time.  Participation in the Plan by a Participant shall be
voluntary.

     SECTION 3.03   DELEGATION TO COMPENSATION COMMITTEE.  All of the powers
exercisable by the Board of Directors under the Plan may, to the extent
permitted by applicable law and authorized by resolution of the Board of
Directors of the Corporation, be exercised by a Compensation Committee of not
less than three (3) directors.  A majority of the members of any such
Compensation Committee shall not be employees of the Corporation.  In addition,
if determined appropriate by the Board of Directors of the Corporation, the
Board of Directors may delegate any or all of the powers of the Board of
Directors of the Corporation under the Plan to an independent consultant.

     SECTION 3.04 ADMINISTRATION OF THE PLAN.  The Plan shall be administered by
the Board of Directors of the Corporation.  The Board of Directors shall be
authorized to interpret and construe the Plan and may, from time to time,
establish, amend or rescind rules and regulations required for carrying out the
purposes, provisions and administration of the Plan and determine the
Participants to be granted options, the number of Common Shares covered thereby,
the exercise price therefor and the time or times when they may be exercised. 
Any such



                                          8
<PAGE>

interpretation or construction of the Plan shall be final and conclusive.  All
administrative costs of te Plan shall be paid by the Corporation.  The senior
officers of the Corporation are hereby authorized and directed to do all things
and execute and deliver all instruments, undertakings and applications and
writings as they, in their absolute discretion, consider necessary for the
implementation of the Plan and of the rules and regulations established for
administering the Plan.

     SECTION 3.05 AMENDMENT, MODIFICATION OR TERMINATION OF THE PLAN.  Subject
to Section 3.03, the Board of Directors reserves the right to amend, modify or
terminate the Plan at any time if and when it is advisable in the absolute
discretion of the Board of Directors.  However, any amendment of the Plan which
would:

     (a)  materially increase the benefits under the Plan;

     (b)  increase the number of Common Shares which may be issued under the
          Plan; or

     (c)  materially modify the requirements as to the eligibility for
          participation in the Plan;

shall be effective only upon the approval of the shareholders of the
Corporation.  Any material amendment to any provision of the Plan shall be
subject to any necessary approvals by the Exchange, other quotation system or
any stock exchange or regulatory body having jurisdiction over the securities of
the Corporation.  Notwithstanding the foregoing, the Plan will terminate 10
years from the date hereof.

     SECTION 3.06 APPLICATION FOR RULING UNDER THE SECURITIES ACT.  The
Corporation is not a "private company" (as defined in the Securities Act and,
accordingly, is not entitled to the exemptions for such companies from the
registration and prospectus requirements of the Securities Act where they are
not offered for sale to the public.  In order to ensure compliance with the
Securities Act, the grant of options under the Plan to Key Contributors other
than officers and employees of the Corporation and its Affiliates shall be
subject to receipt of such rulings or other relief as may be required under the
Securities Act that the granting and exercise of such options shall not be
subject to the prospectus and registration requirements of the Securities Act,
subject to such terms and conditions as the Board of Directors may in its
absolute discretion approval.

     SECTION 3.07 CONSOLIDATION, MERGER, ETC.  If there is a change in control,
which is defined as a consolidation, merger or statutory amalgamation or
arrangement of the Corporation with or into another corporation, a separation of
the business of the Corporation into two or more entities, a transfer of all or
substantially all of the assets of the Corporation to another entity, or the
change in the majority of the board of directors other than by election by the
shareholders pursuant to board solicitation or by vacancies filled by the board
caused by death or resignation of such person, upon the exercise of an option
under the Plan, the holder thereof shall


                                          9
<PAGE>

be entitled to receive the securities, property or cash which the holder would
have received upon such consolidation, merger, amalgamation, arrangement,
separation or transfer if the holder had exercised the option immediately prior
to such event, unless the directors of the Corporation otherwise determine the
basis upon which such option shall be exercisable.


     SECTION 3.08   NO REPRESENTATION OR WARRANTY.  The Corporation makes no
representation or warranty as to the future market value of any Common Shares
issued in accordance with the provisions of the Plan.

     SECTION 3.09   INTERPRETATION.  This Plan shall be governed by and
construed in accordance with the laws of the Province of Ontario.

     SECTION 3.10   APPROVAL AND EFFECTIVE DATE.  This Plan shall be effective
as of the date it is approved by the Board of Directors and any securities
regulatory body or stock exchange in Canada having jurisdiction over the
securities of the Corporation.


Dated: ____________, 1998








                                          10

<PAGE>
                                                                    Exhibit 10.4


                             DECTRON INTERNATIONALE INC.

                                 EMPLOYMENT AGREEMENT


     EMPLOYMENT AGREEMENT made as of this ___ day of _______, 1998 by and
between DECTRON INTERNATIONALE INC., a Quebec, having an office at 4300 Poirer
Blvd., Montreal, Quebec, H4R 2C5, Canada (hereinafter referred to as "Employer")
and NESS LAKDAWALA, an individual with an address C/O Dectron, Inc., 4300 Poirer
Blvd, Montreal, Quebec, H4R 2C5, Canada (hereinafter referred to as "Employee");


                                 W I T N E S S E T H:


     WHEREAS, Employer employs, and desires to continue to employ, Employee as
President and Chief Executive Officer of Employer; and

     WHEREAS, Employee is willing to continue to be employed as the President
and Chief Executive Officer in the manner provided for herein, and to perform
the duties of the President and Chief Executive Officer of Employer upon the
terms and conditions herein set forth;

     NOW, THEREFORE, in consideration of the promises and mutual covenants
herein set forth it is agreed as follows:

     1.   EMPLOYMENT OF PRESIDENT AND CHIEF EXECUTIVE OFFICER.  Employer hereby
employs Employee as President and Chief Executive Officer.

     2.   TERM.  

          a.   Subject to Section 10 below and further subject to Section 2(b)
below, the term of this Agreement shall commence on the effective date of the
Company's Registration Statement (the "Commencement Date") and expire two years
from such date.  Each 12 month period from the Commencement Date forward during
the term hereof shall be referred to as an "Annual Period."  During the term
hereof, Employee shall devote substantially all of his business time and efforts
to Employer and its subsidiaries and affiliates.  

          b.   Subject to Section 10 below, unless the Board of Directors of the
Company (the "Board") of Employer shall determine to the contrary and shall so
notify Employee in writing on or before the end of any Annual Period or unless
the Employee notifies Employer in writing on or before the end of any Annual
Period of his desire not to renew this Agreement, then at the end 



                                           
<PAGE>

of each Annual Period, the term of this Agreement shall be automatically
extended for one (1) additional Annual Period to be added at the end of the then
current term of this Agreement.

     3.   DUTIES.  The Employee shall perform those functions generally
performed by persons of such title and position, shall attend all meetings of
the stockholders and the Board, shall perform any and all related duties and
shall have any and all powers as may be prescribed by resolution of the Board,
and shall be available to confer and consult with and advise the officers and
directors of Employer at such times that may be required by Employer.  Employee
shall report directly and solely to the Board.

     4.   COMPENSATION. 

          a.   Employee shall be paid a salary of $200,000(U.S.) for each Annual
Period thereafter with an adjustment for cost of living increases (based on the
Consumer Price Index "CPI").  Employee shall be paid periodically in accordance
with the policies of the Employer during the term of this Agreement, but not
less than monthly.

          b.   (i) In the event of a "Change of Control" whereby

               (A)  A person (other than a person who is an officer or a
Director of Employer on the effective date hereof), including a "group" as
defined in Section 13(d)(3) of the Securities Exchange Act of 1934, becomes, or
obtains the right to become, the beneficial owner of Employer securities having
30% or more of the combined voting power of then outstanding securities of the
Employer that may be cast for the election of directors of the Employer; 

               (B)  At any time, the Board-nominated slate of candidates for the
Board is not elected;

               (C)  Employer consummates a merger in which it is not the
surviving entity;

               (D)  Substantially all of Employer's assets are sold; or 

               (E)  Employer's stockholders approve the dissolution or
liquidation of Employer; then

               (ii) (A)  In the event of a Change of Control, Employee shall be
eligible to receive a one-time bonus, equal on an after-tax basis to five times
his then current annual base salary.


                                          2
<PAGE>

To effectuate this provision, the bonus shall be "grossed-up" to include the
amount necessary to reimburse Employee for his federal, provincial and local
income tax liability on the bonus and on the "gross-up" at the respective
effective marginal tax rates.  In no event shall this bonus exceed six times
Employee's then current base salary.  Said bonus shall be paid within thirty
(30) days of the Change of Control. 

               (B)  All stock options, warrants and stock appreciation rights
("Rights") granted by Employer to Employee under any plan or otherwise prior to
the effective date of the Change of Control, shall become vested, accelerate and
become immediately exercisable.  In the event Employee owns or is entitled to
receive any unregistered securities of Employer, then Employer shall use its
best efforts to affect the registration of all such securities as soon as
practicable, but no later than 120 days after the effective date of the
registration statement; provided, however, that such period may be extended or
delayed by Employer for one period of up to 60 days if, upon the advice of
counsel at the time such registration is required to be filed, or at the time
Employer is required to exercise its best efforts to cause such registration
statement to become effective, such delay is advisable and in the best interests
of Employer because of the existence of non-public material information, or to
allow Employer to complete any pending audit of its financial statements;

          c.   Employer shall include Employee in its health insurance program
available to Employer's executive officers and shall pay 100% of the premiums
for such program.

          d.  Employee shall have the right to participate in any other employee
benefit plans established by Employer.

          e.   Employee shall be entitled to a car provided to him by the
Company and the Company will pay all insurance and maintenance and expenses in
connection therewith.  

     5.  BOARD OF DIRECTORS.  Employer agrees that so long as this Agreement is
in effect, Employee will be nominated to the Board as part of management's slate
of Directors.  

     6.   EXPENSES.  Employee shall be reimbursed for all of his actual
out-of-pocket expenses incurred in the performance of his duties hereunder,
provided such expenses are acceptable to Employer, which approval shall not be
unreasonably withheld, for business related travel and entertainment expenses,
and that Employee shall submit to Employer reasonably detailed receipts with
respect thereto.


                                          3
<PAGE>

     7.   VACATION.  Employee shall be entitled to receive eight (8) weeks paid
vacation time after each year of employment upon dates agreed upon by Employer. 
Upon separation of employment, for any reason, vacation time accrued and not
used shall be paid at the salary rate of Employee in effect at the time of
employment separation.

     8.   SECRECY.  At no time shall Employee disclose to anyone any
confidential or secret information (not already constituting information
available to the public) concerning internal affairs or proprietary business
operations of Employer.

     9.   COVENANT NOT TO COMPETE.  Subject to, and limited by, Section 11(b),
Employee will not, at any time, anywhere in the world, during the term of this
Agreement, and for one (1) year thereafter, either directly or indirectly,
engage in, with or for any enterprise, institution, whether or not for profit,
business, or company, competitive with the business (as identified herein) of
Employer as such business may be conducted on the date thereof, as a creditor,
guarantor, or financial backer, stockholder, director, officer, consultant,
advisor, employee, member, inventor, producer, director, or otherwise of or
through any corporation, partnership, association, sole proprietorship or other
entity; provided, that an investment by Employee, his spouse or his children is
permitted if such investment is not more than four percent (4%) of the total
debt or equity capital of any such competitive enterprise or business and
further provided that said competitive enterprise or business is a publicly held
entity whose stock is listed and traded on a national stock exchange or through
the NASDAQ Stock Market.  As used in this Agreement, the business of Employer
shall be deemed to include the provision of dehumidification, refrigeration, air
conditioning and indoor air quality services.

     10.  TERMINATION.  

          a.  TERMINATION BY EMPLOYER 






                                          4
<PAGE>

               (i)  Employer may terminate this Agreement  upon written notice
for Cause.  For purposes hereof, "Cause" shall mean (A) engaging by the Employee
in conduct that constitutes activity in competition with Employer; (B) the
conviction of Employee for the commission of a felony; and/or (C) the habitual
abuse of alcohol or controlled substances.  Notwithstanding anything to the
contrary in this Section 10(a)(i), Employer may not terminate Employee's
employment under this Agreement for Cause unless Employee shall have first
received notice from the Board advising Employee of the specific acts or
omissions alleged to constitute Cause, and such acts or omissions continue after
Employee shall have had a reasonable opportunity (at least 30 days from the date
Employee receives the notice from the Board) to correct the acts or omissions so
complained of.  In no event shall alleged incompetence of Employee in the
performance of Employee's duties be deemed grounds for termination for Cause.

               (ii)  Employer may terminate Employee's employment under this
Agreement if, as a result of any physical or mental disability, Employee shall
fail or be unable to perform his duties under this Agreement for any consecutive
period of 120 days during any twelve-month period.  If Employee's employment is
terminated under this Section 10(a)(ii):  (A) for the first year after
termination, Employee shall be paid 100% of his full compensation under Section
4(a) of this Agreement at the rate in effect on the date of termination, and in
each successive 12 month period thereafter Employee shall be paid an amount
equal to 80% of his compensation under Section 4(a) of this agreement at the
rate in effect on the date of termination; and (B) Employee shall continue to be
entitled, insofar as is permitted under applicable insurance policies or plans,
to such general medical and employee benefit plans (including profit sharing or
pension plans) as Employee had been entitled to on the date of termination.  

               (iii)  This agreement automatically shall terminate upon the
death of Employee, except that Employee's estate shall be entitled to receive
any amount accrued under Section 4(a) and the pro-rata amount payable under
Section 4(e) for the period prior to Employee's death and any other amount to
which Employee was entitled of the time of his death.

          b.   TERMINATION BY EMPLOYEE

               (i) Employee shall have the right to terminate his employment
under this Agreement upon 30 days' notice to Employer given within 90 days
following the occurrence of any of the following events (A) through (F):


                                          5
<PAGE>

               (A)  Employee is not elected or retained as President and Chief
Operating Officer.

               (B)  Employer acts to materially reduce Employee's duties and
responsibilities hereunder.  Employee's duties and responsibilities shall not be
deemed materially reduced for purposes hereof solely by virtue of the fact that
Employer is (or substantially all of its assets are) sold to, or is combined
with, another entity, provided that Employee shall continue to have the same
duties and responsibilities with respect to Employer's business, and Employee
shall report directly to the chief executive officer and/or board of directors
of the entity (or individual) that acquires Employer or its assets.

               (C)  A Material Reduction (as hereinafter defined) in Employee's
rate of base compensation, or Employee's other benefits.  "Material Reduction"
shall mean a ten percent (10%) differential;

               (D)  A failure by Employer to obtain the assumption of this
Agreement by any successor;

               (E)  A material breach of this Agreement by Employer, which is
not cured within thirty (30) days of written notice of such breach by Employer;

               (F)  A Change of Control.

               (ii)  Anything herein to the contrary notwithstanding, Employee
may terminate this Agreement upon thirty (30) days written notice.  

          c.   If Employer shall terminate Employee's employment other than due
to his death or disability or for Cause (as defined in Section 10(a)(i) of this
Agreement), or if Employee shall terminate this Agreement under Section
10(b)(i), Employer's obligations under Section 4 shall be absolute and
unconditional and not subject to any offset or counterclaim and Employee shall
continue to be entitled to receive all amounts provided for by Section 4 and all
additional employee benefits under Section 4 regardless of the amount of
compensation he may earn with respect to any other employment he may obtain.  

     11.  CONSEQUENCES OF BREACH BY EMPLOYER;
          EMPLOYMENT TERMINATION

          a.  If this Agreement is terminated pursuant to Section 10(b)(i)
hereof, or if Employer shall terminate Employee's



                                          6
<PAGE>

employment under this Agreement in any way that is a breach of this Agreement by
Employer, the following shall apply:

               (i)  Employee shall receive as a bonus, and in addition to his
salary continuation pursuant to Section 10.c., above, a cash payment equal to
the Employee's total base salary as of the date of termination hereunder for the
remainder of the term plus an additional amount to pay all federal, state and
local income taxes thereon on a grossed-up basis as heretofore provided, payable
within 30 days of the date of such termination.

               (ii) Employee shall be entitled to payment of any previously
declared bonus and additional compensation as provided in Section 4(a) and (b)
above.

          b.   In the event of termination of Employee's employment pursuant to
Section 10(b)(i) of this Agreement, the provisions of Section 9 shall not apply
to Employee.

     12.  REMEDIES

          Employer recognizes that because of Employee's special talents,
stature and opportunities in the Company's business, and because of the special
creative nature of and compensation practices of said industry and the material
impact that individual projects can have on company's results of operations, in
the event of termination by Employer hereunder (except under Section 10(a)(i) or
(iii), or in the event of termination by Employee under Section 10(b)(i) before
the end of the agreed term, the Employer acknowledges and agrees that the
provisions of this Agreement regarding further payments of base salary, bonuses
and the exercisability of Rights constitute fair and reasonable provisions for
the consequences of such termination, do not constitute a penalty, and such
payments and benefits shall not be limited or reduced by amounts' Employee might
earn or be able to earn from any other employment or ventures during the
remainder of the agreed term of this Agreement.

     13.  ARBITRATION.  Any controversies between Employer and Employee
involving the construction or application of any of the terms, provisions or
conditions of this Agreement, save and except for any breaches arising out of
Sections 8 and 9 hereof, shall on the written request of either party served on
the other be submitted to arbitration.  Such arbitration shall comply with and
be governed by the rules of the American Arbitration Association.  An
arbitration demand must be made within one (1) year of the date on which the
party demanding arbitration first had notice of the existence of the claim to be
arbitrated, or the right to


                                          7
<PAGE>

arbitration along with such claim shall be considered to have been waived.  An
arbitrator shall be selected according to the procedures of the American
Arbitration Association.  The cost of arbitration shall be born by the losing
party or in such proportions as the arbitrator shall decide.  The arbitrator
shall have no authority to add to, subtract from or otherwise modify the
provisions of this Agreement, or to award punitive damages to either party.

     14.  ATTORNEYS' FEES AND COSTS.  If any action at law or in equity is
necessary to enforce or interpret the terms of this Agreement, the prevailing
party shall be entitled to reasonable attorney's fees, costs and necessary
disbursements in addition to any other relief to which he may be entitled.

     15.  ENTIRE AGREEMENT; SURVIVAL.  This Agreement contains the entire
agreement between the parties with respect to the transactions contemplated
herein and supersedes, effective as of the date hereof any prior agreement or
understanding between Employer and Employee with respect to Employee's
employment by Employer. The unenforceability of any provision of this Agreement
shall not effect the enforceability of any other provision.  This Agreement may
not be amended except by an agreement in writing signed by the Employee and the
Employer, or any waiver, change, discharge or modification as sought.  Waiver of
or failure to exercise any rights provided by this Agreement and in any respect
shall not be deemed a waiver of any further or future rights.

          b.   The provisions of Sections 4, 8, 9, 10(a)(ii), 10(a)(iii), 10(c),
11, 12, 13, 14, 17, 18 and 19 shall survive the termination of this Agreement.

     16.  ASSIGNMENT.  This Agreement shall not be assigned to other parties.

     17.  GOVERNING LAW.  This Agreement and all the amendments hereof, and
waivers and consents with respect thereto shall be governed by the internal laws
of the Province of Quebec, without regard to the conflicts of laws principles
thereof.

     18.  NOTICES.  All notices, responses, demands or other communications
under this Agreement shall be in writing and shall be deemed to have been given
when 

          a.   delivered by hand; 


                                          8
<PAGE>

          b.   sent be telex or telefax, (with receipt confirmed), provided that
a copy is mailed by registered or certified mail, return receipt requested; or 

          c.  received by the addressee as sent be express delivery service
(receipt requested) in each case to the appropriate addresses, telex numbers and
telefax numbers as the party may designate to itself by notice to the other
parties:  



               (i) if to the Employer:

                    Dectron Internationale Inc.
                    4300 Poirer Blvd.
                    Montreal, Quebec H4R 2C5
                    Canada

                    Attention: Ness Lakdawala

                    Telefax: (514) 334-9184
                    Telephone: (514) 334-9609

                    Gersten, Savage, Kaplowitz & Fredericks, LLP
                    101 East 52nd Street
                    9th Floor
                    New York, New York 10022

                    Attention: Arthur S. Marcus, Esq.

                    Telefax: (212) 980-5192
                    Telephone: (212) 752-9700

               (ii) if to the Employee: 

                    Ness Lakdawala
                    c/o Dectron Internationale Inc.
                    4300 Poirer Blvd.
                    Montreal, Quebec H4R 2C5
                    Canada

     19.  SEVERABILITY OF AGREEMENT.  Should any part of this Agreement for any
reason be declared invalid by a court of competent jurisdiction, such decision
shall not affect the validity of any remaining portion, which remaining
provisions shall remain in full force and effect as if this Agreement had been
executed with the invalid portion thereof eliminated, and it is hereby declared
the intention of the parties that they would have executed the remaining
portions of this Agreement without including any such part, parts or portions
which may, for any reason, be hereafter declared invalid.



                                          9
<PAGE>


     IN WITNESS WHEREOF, the undersigned have executed this agreement as of the
day and year first above written.


                                   DECTRON INTERNATIONALE INC.




                                   By:
                                      -------------------------------
                                      Mauro Parisi
                                      Chief Financial Officer



                                   By:
                                      -------------------------------
                                      Ness Lakdawala















                                          10

<PAGE>


                                                              EXHIBIT 10.6

                           LOCK-UP LETTER AGREEMENT

                               AUGUST __, 1998



J.P. Turner & Company, L.L.C.
3340 Peachtree Road, Suite 450
Atlanta, Georgia 30326

Klein Maus and Shire Incorporated
110 Wall Street
New York, New York 10005

Gentlemen:

     I am the owner of _________ shares of Common Stock, no par value (the 
"Common Stock") of Dectron Internationale, Inc., a corporation organized 
under the laws of the province of Quebec, Canada (the "Company").

     The Company intends to conduct an initial public offering of its Common 
Stock ("IPO") which shall be underwritten by J.P. Turner & Company, LLC and 
Klein Maus and Shire Incorporated (the "Underwriters"), as expressed in a 
letter of intent between the Company and the Underwriters (the "Letter of 
Intent") dated June 25, 1998. The undersigned recognizes the benefits which 
the Company will derive from the IPO. For and in consideration of the 
Underwriters entering into the Letter of Intent and its willingness to 
conduct the IPO contemplated thereby on mutually acceptable terms, I hereby 
agree to the following lock-up arrangement restricting the sale of the 
Company's Common Stock.

A.  THE LOCK-UP
    -----------

    1.   The period during which the Company's Common Stock shall be subject 
to the restrictions set forth herein shall commence on the date hereof and 
terminate on the date which is eighteen (18) months from the closing of the 
IPO, or on the date which is thirty six (36) months from the closing of the 
IPO in the event my total compensation as an officer or director of the 
Company is in excess of $100,000 per year, or if I own five percent (5%) or 
more of the Company's outstanding stock (such period herein referred to as 
the "Lock-Up Period"). During the Lock-Up Period, I will not sell, pledge, 
hypothecate, grant an option for sale or otherwise dispose of, or transfer or 
grant the General Rules and Regulations under the Securities Act of 1933, as 
amended, or otherwise) any of the shares of Common Stock (directly or 
indirectly owned or controlled by me on the date hereof) (the "Securities"), 
without the Underwriters's prior written consent. During the Lock-Up Period, 
securities may be sold or otherwise transferred in a private transaction so 
long as the acquiror of the Securities, by written agreement with the 
Underwriters entered into at the time of acquisition and delivered to the 
Underwriters prior to the consummation of such acquisition, agrees to be 
bound by the terms of this Paragraph



<PAGE>


A.1 for the balance of the Lock-Up Period, and by the terms of Paragraph A.2 
below; and, provided further, that the Securities, or any portion thereof, 
may be transferred by any such transferee to a trust for the benefit of, or 
as gifts to, either individually or collectively in any number, such 
transferee, or his or her spouse and children, (a "Permitted Transferee") and 
in such event the trustee of such trust or donor shall execute this Lock-Up 
Letter Agreement and agree to be bound thereby; or (ii) by court order or 
pursuant to the laws of descent and distribution.

     2.  In the event I desire to sell any of the Securities at any time 
during the term of the Lock-Up Period or within 12 months after termination 
of the Lock-Up Period as described below, publicly under Rule 144 or 
otherwise, I will sell such securities through the Underwriters, so long as 
the price and terms of execution offered by the Underwriters are at least as 
favorable as may be obtained from other brokerage firms.

     3.  Following the expiration of the Lock-Up Period, the shares of Common 
Stock subject to this Lock-Up Agreement shall be released from the 
restrictions set forth in Paragraph A.1 at a rate of twenty percent (20%) per 
annum for a period of five (5) years, except in the event of a bona-fide 
tender offer made at above the prevailing market price. Once released, such 
shares may be sold in accordance with the provisions of Paragraph A.2 above.

     4.  Notwithstanding anything herein to the contrary, all of the 
Securities shall be released from the restrictions set forth in paragraph 
A.1, to the extent not previously released, on _____________________.


B.  PROVISIONS APPLICABLE TO SHARES
    -------------------------------

    The Company and the undersigned hereby acknowledge and represent that:

       (a)  A copy of this Lock-Up Agreement will be available from the 
Company or its transfer agent upon request and without charge and a copy of 
this Lock-Up Agreement may be filed with the Securities Commissions of 
various states, including, without limitation, any state securities 
commission requiring its availability.

       (b)  A typed legend will be placed on the reverse side of each stock 
certificate representing the Common Stock covered by the Lock-Up Agreement 
which states that the sale or transfer of the shares evidenced by the 
certificate is subject to certain restrictions pursuant to an agreement 
between the shareholder (whether beneficial or of record) and the 
Underwriters, which agreement is on file with the Company and the Company's 
stock transfer agent from whom a copy is available, upon request and without 
charge.

       (c)  The terms and conditions of this Lock-Up Agreement can only be 
modified (including premature termination thereof), upon the written consent 
of the Underwriters and the prior approval of any state securities commission 
which requires such consent.

       (d)  Stop transfer instructions will be placed with the transfer agent 
against all shares of the Company's Common Stock subject to the restrictions 
contained in



<PAGE>


paragraph A(1) of this Lock-Up Agreement. Notwithstanding the foregoing, 
shares subject to this Lock-Up Agreement may be transferred by the transfer 
agent when shares are accompanied by an opinion of company counsel certifying 
that such transfer is a permitted transfer.

     If this agreement is acceptable to J.P. Turner, please sign the form of 
acceptance below and deliver one of the counterparts hereof to me. This will 
become a binding agreement between us upon execution by each of the parties 
hereto.


                                       Very truly yours,

                                       --------------------------------------

                                       --------------------------------------
                                       (Number of Shares Beneficially Owned)



AGREED to and ACCEPTED this
___ day of August 1998.

J.P. TURNER & COMPANY, LLC


By
  -------------------------------
       Authorized Signature


KLEIN MAUS AND SHIRE INCORPORATED


By
  ---------------------------------
       Authorized Signature

<PAGE>
                                                                    EXHIBIT 23.1
 
                      CONSENT OF SCHWARTZ LEVITSKY FELDMAN
 
   
    The Undersigned, Schwartz Levitsky Feldman, Chartered Accountants hereby
consents to the use of our name and the use of our opinion dated April 22, 1998
for Dectron Internationale Inc. (the "Company") as filed with its Registration
Statement on Amendment No. 1 to Form SB-2 being filed by the Company.
    
 
   
Date: August 25, 1998
    
 
<TABLE>
<S>                             <C>
                                    Schwartz Levitsky Feldman, Chartered
                                                 Accountants
                                        /s/ Schwartz Levitsky Feldman
                                ---------------------------------------------
</TABLE>


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