THERMODYNETICS INC
10KSB, 1998-06-29
MISCELLANEOUS FABRICATED METAL PRODUCTS
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                     U.S. SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 10-KSB

                     ANNUAL REPORT UNDER SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended March 31, 1998          Commission file number 0-10707


                              THERMODYNETICS, INC.
                 (Name of Small Business Issuer in Its Charter)

         Delaware                                        06-1042505
(State or other jurisdiction of                 (I.R.S. Employer Identification
 Incorporation or Organization)                           Number)


651 Day Hill Road,                    06095               (860) 683-2005
Windsor, Connecticut                (Zip Code)       (Issuer's telephone number)
(Address of Principal    
 Executive Offices)

Securities registered pursuant to Section 12(b) of the Act:

                                                        Name of Each Exchange
  Title of Each Class                                    on which Registered
        None                                                   None

Securities registered pursuant to Section 12(g) of the Act:

                                 Title of Class
                           Common Stock $.01 par value

Check  whether  the issuer  has (1) filed all  reports  required  to be filed by
Section 13 or 15(d) of the Securities  Exchange Act of 1934 during the preceding
12 months (or for such shorter  period that the  registrant was required to file
such reports), and (2) has been subject to such filing requirements for the past
90 days.

                                              Yes [X] No [_]

Check if there is no  disclosure of  delinquent  filers  pursuant to Item 405 of
Regulation S-B is not contained herein,  and will not be contained,  to the best
of  registrant's  knowledge,  in  definitive  proxy  or  information  statements
incorporated  by reference  in Part III of this Form 10-KSB or any  amendment to
this Form 10-KSB [ ]

The issuer's revenues for its most recent fiscal year were $8,601,629.

As of June 12,  1998 the  aggregate  market  value of the  voting  stock held by
nonaffiliates of the Issuer was approximately $1,350,000 based on the average of
the closing bid and asked  prices as  reported  by the NASD OTC  Bulletin  Board
system.

Indicate the number of shares  outstanding  of each of the  issuer's  classes of
common equity, as of the close of the period covered by this report.

Class                                           Outstanding as of March 31, 1998
- -----                                           --------------------------------

Common Stock $.01 par value                             12,569,646 Common shares

Transitional Small Business Disclosure Format        Yes [_]  No [X]


<PAGE>


                                     PART I

Item 1. Description of Business

     (a) Business  Development -  Thermodynetics,  Inc., a Delaware  corporation
incorporated  in 1981,  is the  successor  by merger  in 1981 to  Spiral  Tubing
Corporation  which  had been  incorporated  in  1972.  Thermodynetics,  Inc.  is
referred to  individually  and  collectively  with its Turbotec  Products,  Inc.
("Turbotec"),  TPI Systems,  Inc.  ("TPI") and  National  Energy  Systems,  Inc.
("NES")  subsidiaries  as the  "Company".  The Company is engaged in the design,
manufacture  and sale of enhanced  surface  metal tubing and related  assemblies
primarily for heat transfer  applications  using its patented and/or proprietary
technology.  The Company's products are primarily used in heat pumps,  chillers,
heat  reclaimers  and  biomedical  heat  exchangers  serving  the  heating,  air
conditioning,  refrigeration,  food  processing,  beverage,  medical  equipment,
marine,  plumbing,  commercial  and  residential  construction,   and  aerospace
industries and may be used in most applications where heat exchange is required.

     (b)  Business of Issuer

     (1)  Products and  Marketing - The Company  manufactures  surface  enhanced
metal tubing and related assemblies for heat transfer and plumbing applications.
The Company's  patented and/or  proprietary  machinery  transforms  smooth metal
tubing using its patented and/or  proprietary  technology into surface  enhanced
tubing.  The  Company's  enhanced  tubing  is  primarily  used  in  applications
involving  laminar or turbulent  flow of fluids for efficient  transfer of heat.
The enhanced tubing  products have a  significantly  greater surface area than a
smooth tube of the same length  which  improves  heat  transfer  efficiency  and
reduces the amount of metal tubing required.  The enhanced tubes are easily bent
or  coiled  without  significant  distortion  into  tight  radii  suited  to the
formation of space-saving sizes and shapes.

     The Company's  products are presently  used in heat pumps as condensers and
evaporators in heating,  refrigeration,  food  processing  and  air-conditioning
systems;   in  the  biomedical  field  (as  blood  or  intravenous   fluid  heat
exchangers);  in heat recovery units used to heat water with waste heat from air
conditioning,  refrigeration  systems,  in  ice  production  systems;  in  laser
coolers,  beverage  dispensers,  food processing  systems,  chillers,  heat pump
systems and boilers,  and modules for use as components  in large  condensing or
desuperheater  systems; and are generally usable in most applications where heat
transfer  is  required.  The  tubing,  when used as a flexible  connector,  also
facilitates the installation of plumbing fixtures and modules.

     The  Company's  heat  recovery  systems are  installed  in food  processing
plants,  restaurants,  hotels,  supermarkets,   military  bases  and  individual
residences,  capturing  waste  heat  (from  refrigeration  and air  conditioning
equipment) which is used to produce hot water.

     The  Company's  products are designed  for specific  customer  requirements
taking into  account  such  variables  as  allowable  temperature  and  pressure
differentials,  the nature of the  fluids to be used  (liquids  or  gases),  the
required flow rates and the  operational  and  environmental  conditions.  These
factors are  considered  to determine the type,  length,  diameter and degree of
enhancement  of the metal  tubing to be used  (usually  copper,  copper  nickel,
aluminum,  carbon steel or stainless  steel although any metal may be utilized),
and the physical  characteristics  of the tube. The Company's  machinery permits
the  manufacture  of  enhanced  tubing  ranging  from 1/8 inch to six  inches in
diameter,  from  four  inches  to 40  feet  in  length,  and  with  tubing  wall
thicknesses ranging from .005 to .125 inch.

     After design,  the Company usually  manufactures a prototype for a customer
at prices ranging from approximately $500 to $3,000.  After testing and customer
acceptance,  the customer  places  purchase orders with the Company ranging from
$1,000 for small  orders to as much as $250,000 for large  orders.  In addition,
certain  customers have placed blanket  purchase orders for shipments to be made
over extended  periods at sales  volumes  ranging from  approximately  $1,000 to
$150,000 per month.


<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 2

     The Company owns specially designed patented and/or  proprietary  machinery
which is used to enhance and coil its metal tubing products as well as tools and
dies and other nonproprietary machinery to perform normal fabrication functions.
The Company believes its present machinery at both of its Connecticut facilities
are adequate for it to manufacture and ship up to approximately  $16 million per
year of its products based upon present prices.

     (2)  Distribution Methods

          (a)  Marketing  and  Sales - The  Company  markets  its  metal  tubing
     products in the United States,  Canada and abroad through its Sales Manager
     who,  supported by other personnel,  develop sales leads along with serving
     existing  customers.  They are  currently  compensated  on a  salaried  and
     incentive  basis.  In  addition,   the  Company  uses   independent   sales
     representatives  and distributors.  The Company  advertises its products in
     trade periodicals and at trade shows.

          (b)  Foreign  Operations  and Export  Sales - The  Company  has had no
     foreign operations and its export sales during the past fiscal year did not
     exceed 5% of gross sales.

          (c) Seasonal Nature of the Business - The Company believes its present
     business is somewhat  seasonal  in nature as a  significant  portion of the
     Company's  revenues are derived from sales  relating to  space-conditioning
     and heat pump applications.

     (3) New Product Status - Inapplicable.

     (4)   Competition  -  Although  the  Company   believes  its  products  are
competitive in most  applications  based on cost and efficiency,  many competing
products  are  offered  by   manufacturers   and  distributors  who  are  longer
established,  larger, and who possess  substantially greater financial resources
and substantially larger administrative, technical and marketing staffs than the
Company.  No  assurances  can  be  given  that  the  Company  will  be  able  to
successfully compete with such firms.

     (5)  Raw  Materials  - The  Company's  surface  enhanced  metal  tubing  is
manufactured from smooth tubing, usually copper,  cupronickel,  aluminum, carbon
steel  or  stainless  steel.  The  Company  usually  purchases  tubing  in  mill
quantities manufactured to its specifications by various tube fabricating mills.
The  Company  does  not  believe  that it is a  major  customer  of any  mill or
distributor  and has no supply  contracts.  The Company has not  experienced any
significant  shortages or extended delays in deliveries of raw materials  during
the past five years.  There is no  assurance  that  shortages or delays will not
occur  in  the  future  causing   disruptions   in  production,   shipments  and
profitability.

     (6) Dependence on Single or Few Major Customers - For the fiscal year ended
March 31, 1998,  three (3) customers,  56% in the aggregate,  each accounted for
more than 10% of the Company's net sales. There is no assurance the Company will
retain  these  customers  and if it does  not,  the loss of one or more of these
customers could have a material adverse affect upon the Company.

     (7) Patents, Trademarks, Licenses, Franchises and Concessions - The Company
currently  owns two (2) United  States  Patents  expiring in 2003 and 2008.  The
Company also owns patents in Canada and  trademarks  in Canada and Australia all
related to  manufacturing  methods,  machinery and types of tubing.  The Company
does not believe that its business is materially  dependent  upon its patents as
in addition to its patent protection, the Company treats a substantial amount of
proprietary information concerning its manufacturing processes as confidential.

     The Company also has registered various trademarks in the United States and
certain  foreign  countries.  The  Company  believes  that its  registered  U.S.
trademark "TURBOTEC(R)," both alone and accompanied by an impression or print of
a spirally fluted tube is of material importance to its business.



<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 3

     (8) Governmental Approval - N/A

     (9) Effect of  Governmental  Regulations - The Company's  business does not
involve  contracts or subcontracts with the United States Government in material
amounts.

     (10)  Research  and  Development  -  The  Company   charges   research  and
development costs to operations as incurred.  As such costs do not exceed 10% of
sales, the Company does not regard such costs to be material in amount.

     (11) Effect of Environmental  Laws - During the fiscal year ended March 31,
1998,  there was no material  effect on the business of the Company with respect
to its requirements to comply with environmental laws.

     (12) Employees - At March 31, 1998,  the Company had 22 salaried  employees
and 41 employees compensated on an hourly basis.

     (13) Working  Capital Items - At March 31, 1998, the Company had a positive
working capital position of $542,155. See Item 6 herein.

     At March 31,  1998,  the  Company's  credit  facilities  consisted of (a) a
$875,000  mortgage  note payable,  secured by the  Company's Day Hill  facility,
repayable  in equal  monthly  installments  of $7,292  with the  balance  due on
December  1, 2002;  (b) a $460,000  term note  payable  in sixty  equal  monthly
installments of $7,667 through  December 1, 2002; (c) a revolving line of credit
with a maximum  credit  availability  which  was  increased  in  April,  1997 to
$1,800,000;  (d) a $333,330 term note, which was amended, payable in fifty equal
monthly  installments  of $6,667  through March 1, 2002; and (e) a $400,000 term
note,  payable in sixty equal monthly  installments of $6,667 through  December,
2001.  All of the above  credit  facilities  bear  interest  at the bank's  base
lending rate plus 1%, and are secured by substantially all assets of the Company
except the Baker Hollow facility, and certain undeveloped land contiguous to the
Baker  Hollow  Facility,  and  shares of stock of another  corporation  that the
Company is holding as an investment.  The revolving line of credit  provides for
borrowings on a demand basis against the line based on an inventory and accounts
receivable  collateral  formula.  At March 31, 1998 the Company owed  $1,061,747
under the line of credit. See Item 2 herein.

     The Company's Baker Hollow facility is subject to (f) a $1,100,000 ten year
mortgage from a second  financial  institution due July 1, 2006 with an interest
rate of 9.72% for five years and  thereafter  will be adjusted to equal the then
effective five year United States  Treasury  Constant  Maturity Index plus three
percentage points. In addition to encumbering the 651 Day Hill Road facility, an
Intercreditor  Agreement  between the Company's two banks provides for a partial
subordination  of the  first  bank's  $1,000,000  mortgage  to  provide a second
priority  lien of  $150,000  in favor of the second  bank's ten year  $1,100,000
mortgage on the Day Hill Road facility. See Items 2 and 3 herein.

Item 2. Description of Properties

     The Company's principal offices and manufacturing operations are located at
its approximately 40,000 square foot one story building constructed in 1981 on a
six acre site located at 651 Day Hill Road, Windsor,  Connecticut.  The Day Hill
facility is a steel frame structure with polystyrene and stucco outer walls, has
parking for approximately 75 cars and contains  approximately 30,000 square feet
of factory space and  approximately  10,000 square feet of office space. The Day
Hill  facility,  along with the  Company's  equipment and  machinery,  serves as
collateral for the Company's  credit  facilities.  See Item 1(b)(13)  herein and
Note 8 of Notes to Consolidated Financial Statements.


<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 4

     The Company also  conducts  certain of its  manufacturing  operations  in a
light industrial multi-purpose facility on approximately 3.5 acres located at 50
Baker Hollow Road,  Windsor,  Connecticut,  contiguous to the Day Hill site. The
Baker Hollow  facility was constructed in 1991 and is comprised of a steel frame
structure  with  concrete  block  and  stucco  outer  walls,   has  parking  for
approximately 95 cars and contains  approximately  28,600 square feet of factory
space. The Company also owns 3.5 acres of unencumbered undeveloped land adjacent
to the Baker Hollow facility. The Baker Hollow facility serves as collateral for
a ten year mortgage.  The Company is currently leasing the remaining square feet
of the Baker Hollow facility to an unaffiliated  third party with annual rentals
ranging  from  $46,000 to $51,750,  triple net;  that lease will expire in July,
1999. See Item 1(b)(13), Item 9(a-b) and Notes 8 and 11 of Notes to Consolidated
Financial Statements.

     The Company's  manufacturing equipment includes specially designed patented
and  proprietary  machinery to enhance and coil metal tubing,  as well as tools,
dies  and  other  nonproprietary  machinery  and  equipment  to  perform  normal
fabrication  functions.  The Company  believes its machinery and equipment is in
good condition, reasonable wear and tear excepted.

Item 3. Legal Proceedings

     There are no material  legal  proceedings  known or threatened  against the
Company.

Item 4. Submission of Matters to a Vote of Security Holders

     The Company's Annual Meeting of Stockholders was held on Tuesday,  November
11, 1997. At said meeting,  the following  individuals  were elected to serve as
directors of the Company until the next annual meeting of stockholders and until
their  successors are elected and qualified:  John F. Ferraro,  Robert A. Lerman
and Anthony C. Mirabella.

                                     PART II

Item 5. Market for Common Equity and Related Stockholder Matters

     (a) The Company's Common Stock is quoted and traded in the over-the-counter
market on the NASD OTC  Bulletin  Board  system  under the  symbol  "TDYN."  The
following  table  indicates  high  and  low  bid and  asked  quotations  for the
Company's Common Stock for the periods indicated based upon information compiled
by the  National  Quotation  Bureau from the Pink  Sheets,  and the OTC Bulletin
Board system and  represent  prices  between  dealers and do not include  retail
mark-up, mark-down or commissions; and do not represent actual transactions.

                                         Bid Prices               Asked Prices
                                         ----------               ------------
Quarter Ended                        High         Low          High         Low

June 30, 1996                       $0.40        $0.25        $0.45        $0.32
September 30, 1996                   0.30         0.20         0.35         0.22
December 31, 1996                    0.23         0.15         0.25         0.18
March 31, 1997                       0.19         0.15         0.21         0.16

June 30, 1997                       $0.17        $0.11       $0.185       $0.129
September 30, 1997                   0.18         0.15        0.185         0.16
December 31, 1997                   0.175         0.12         0.19        0.135
March 31, 1998                      0.145        0.115        0.155        0.125

     (b) At March 31, 1998, the number of holders of the Company's  Common Stock
was 2,516 (based upon the number of record holders).

<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 5
    


     (c) The  Company  has not paid any  dividends  on the  Common  Stock  since
inception and does not expect to pay any dividends in the foreseeable future.

Item 6. Management's  Discussion and Analysis of Financial Condition and Results
        of Operations

Results of Operations

     1998 Compared to 1997

     Net sales for fiscal year 1998 were $8,601,629,  which represented a slight
decline of $97,712 from the prior year. As detailed in previous  filings  during
the year, persistent moderate temperatures in the United States,  resulting from
the "El Nino"  effect,  severely  depressed  requirements  for  heating  and air
conditioning equipment. Overall industry statistics reflected a sales decline of
10-12% for HVAC-related  products in 1998,  primarily resulting from the absence
of temperature  extremes in both the summer and winter  seasons.  Comparatively,
the Company's modest sales decline of only 1% between years actually represented
continued growth in its core product lines of  approximately  10% in 1998, given
the adverse market conditions.

     During the year the Company  successfully  introduced a new line of tube-in
tube heat  exchangers  which  increase  system  performance  and  protect  other
components.  These suction line heat exchangers, used primarily in refrigeration
applications,  open a new market for the  Company's  products and  represent its
initial  foray  into  the  manufacture  of   high-volume,   second  tier  system
components.  Further developments in coaxial coil technology enabled the Company
to expand its presence into certain specialty  markets,  including swimming pool
heat pumps,  subcoolers and marine chillers, all of which are forecasted to grow
over the next few years.  Additional market diversification was provided through
the addition of a new line of products servicing the ice machine industry. These
coils are now specified  exclusively by the largest domestic manufacturer on all
its water-cooled  machines. The combination of continued growth in core markets,
coupled  with the  ongoing  development  of these new  product  applications  is
expected to result in record sales levels for fiscal 1999.

     Cost of sales declined slightly from 75% of net sales in fiscal 1997 to 74%
in 1998. During the current year additional  conversions to manufacturing  cells
on the shop floor increased labor  efficiencies and provided more flexibility in
production  scheduling.  Cross-training  of shop floor employees,  together with
their  realignment  into production  teams has enabled the Company to retain its
commitment to quality while creating  opportunities  for the introduction of new
products under accelerated  prototyping  schedules.  Manufacturing overhead also
decreased  slightly  as general  cost  containment  programs  coupled  with less
production scrap generated from the cellular  configuration  served as catalysts
to drive down costs.

     Selling,  general and administrative expenses in the current year increased
by $171,490 or 11% over fiscal 1997. The continued  growth in existing  markets,
coupled with the development of new products required additional  investments in
overhead  functions  to  support  these  programs.   Further  expansion  of  the
engineering and marketing departments is targeted during the next fiscal year.

     Other expense consists  primarily of interest charges on term and revolving
debt paid to banks.  During the year, the Company  refinanced  certain term debt
relating  to fixed  assets  and used a portion  of the  proceeds  to reduce  the
balance of its working  capital  line of credit.  As a result,  the overall debt
load increased slightly over fiscal 1997 and the corresponding  interest expense
remained level during the two-year period.

     During the prior year,  the Company  refinanced a mortgage  loan secured by
one of its manufacturing  facilities.  Consequently,  an extraordinary  gain was
recorded in fiscal 1997. No similar transactions occurred in fiscal 1998.


<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 6

         1997 Compared to 1996

     Net sales totaled $8,699,341 for the 1997 fiscal year, which represented an
increase of $1,441,212,  or 20%, over the prior year. During the past two fiscal
years, sales increased by an aggregate of $2,965,449, or 52%, for the period.

     The Company has  continued  to  aggressively  market new,  high  efficiency
condenser/evaporator  components utilizing its proprietary  technologies.  These
products have elicited a favorable reception from a widely diversified  customer
base, which has opened new markets for penetration and enabled further expansion
of the  Company's  existing  applications.  The  Company  has also  successfully
provided  specialty  heat  exchangers  by offering  integrated  value-engineered
designs into  systems with  demanding  performance  requirements.  Additionally,
surfaced-enhanced  tubing continues to offer the Company's customers  advantages
in highly  efficient  heat transfer for various shell and tube,  subcooler,  and
chiller  applications  both in the United  States and abroad;  these markets are
expected to exhibit further growth in future years.

     Cost of sales remained  constant at approximately 74% of net sales for both
the current and prior years.  Copper and copper  alloys  exhibited  upward price
movement  during the latter stages of 1997 after dropping  significantly  during
the March-July 1996 period.  Costs of converting raw materials remained constant
between years as increased  manufacturing  efficiencies offset cost increases in
direct labor and manufacturing overhead.

     Self-directed work teams operating in cellular  configurations have enabled
the company to reduce both  pre-production  cycles and manufacturing lead times.
Improvements in employee  productivity coupled with added flexibility  resulting
from extensive  cross  training on the shop floor have  increased  manufacturing
capacity with a minimal  outlay of capital.  Further  progress is anticipated as
the  physical  plant  continues  to be  adapted  to the  reconfigured  work flow
patterns.

     Selling,  general and  administrative  expenses  increased by $378,350 over
fiscal 1996. The additional expenses reflect added administrative costs incurred
to support  the  expanded  sales  base as well as the prior year  restructuring.
Selling and engineering expenses were consistent for all periods presented.

     Other  expense  increased  slightly in the current  year as a reduction  in
interest expense of $43,676 was offset by certain  non-recurring,  non-operating
income realized in fiscal 1996. Consequently,  there was a net increase in other
expense of $15,753 in 1997.

     In  June  1996,  the  Company   refinanced  the  mortgage  on  one  of  its
manufacturing  facilities.  An  extraordinary  gain of  $72,731,  net of related
expenses  and income  taxes,  was  recognized  as a portion  of the former  debt
obligation was forgiven by the financial institution.

Liquidity and Capital Resources

     Working  capital at March 31, 1998 was  $542,155 as compared to $274,868 at
March 31, 1997.  Current assets  increased by $217,507,  primarily due to higher
levels of inventory and the recording of a deferred income tax benefit.  Current
liabilities  decreased by $49,780 as higher levels of trade payables were offset
by a shift in the aging of term debt from current to long-term.

     Cash provided by operating activities was $286,098 for fiscal 1998 compared
to $29,326 for the prior twelve-month period. An improvement in collections from
customers  resulted in a sharp  decrease in accounts  receivable  from the prior
year-end.  Increases in inventory and accounts  payable  during the last quarter
also impacted cash flow as raw material  purchases  were  expedited to support a
strong level of orders scheduled for spring delivery.

     Cash used in  investing  activities  increased  slightly  from  $319,378 in
fiscal  1997 to  $347,834 in the current  year.  Capital  expenditures  for 1998
reflected the need for  additional  production  equipment to support new product
development and other manufacturing activities.

<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 7

     Cash provided by financing  activities in fiscal 1998 aggregated $61,209 as
compared to $290,073 in 1997.  Refinancing  of term debt in the current year was
primarily to consolidate  existing debt. Prior year financing  activities served
to establish long-term  financing of fixed asset expenditures  previously funded
through  operating  capital.  Current  financial  resources  appear  adequate to
support the future growth plans of the Company.

     Inflation and other cost increases  have not been a significant  factor for
the Company during the last two fiscal years. Prior thereto,  prices for many of
the commodity products used in production exhibited significant fluctuation from
time to time.  Copper and copper alloy products remain in relatively good supply
and prices have remained stable during the most recent fiscal year.

     The Company has performed an extensive review of its information processing
systems and has determined that there are no significant  issues concerning Year
2000-related  computer  problems.  Further,  discussions in this area with major
customers and suppliers have not revealed any issues that should have a material
impact on the Company's operations relating to Year 2000 compliance.

Considerations  regarding  Forward-Looking  Disclosures.  This annual report, in
particular this Item 6, contains certain  forward-looking  statements  regarding
the Company,  its business  prospects and results of operations that are subject
to certain risks and  uncertainties  posed by many factors and events that could
cause the  Company's  actual  business,  prospects  and results of operations to
differ  materially  from those that may be anticipated  by such  forward-looking
statements.  Factors that may effect such  forward-looking  statements  include,
without limitation: the Company's ability to successfully and timely develop and
finance new projects,  the impact of competition on the Company's revenues,  and
changes in unit  prices,  supply and demand for the  Company's  tubing  products
especially in applications  serving the  commercial,  industrial and residential
construction industries.

     When used words such as "believes", "anticipates", "expects", "intends" and
similar expressions are intended to identify forward-looking statements, but are
not the exclusive means of identifying forward-looking  statements.  Readers are
cautioned not to place undue reliance on these forward-looking statements, which
speak only as of the date of this report.  The Company  undertakes no obligation
to  revise  any  forward-looking  statements  in  order  to  reflect  events  or
circumstances that may subsequently arise. Readers are urged to carefully review
and consider the various  disclosures  made by the Company in this report,  news
releases,  and other reports filed with the Securities  and Exchange  Commission
that  attempt to advise  interested  parties of the risks and  factors  that may
affect the Company's business.

Item 7. Financial Statements and Supplementary Data

     Attached following Item 13.

Item 8.  Changes  in  and  Disagreements  with  Accountants  on  Accounting  and
         Financial Disclosure

     No change in the Company's  accountants  occurred  during the Company's two
most  recent  fiscal  years  or any  subsequent  interim  period,  nor  did  any
disagreements  occur with the Company's  accountants on any matter of accounting
principles or practices or financial  statement  disclosure that would require a
current report filing on Form 8-K.


<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 8

                                    PART III

Item 9. Directors and Executive Officers of the Issuer

     (a)-(b) The executive officers and directors of the Company are:

<TABLE>
<CAPTION>
                                                                                        Officer or
Name                            Age      Position                                       Director Since
- ----                            ---      --------                                       --------------
<S>                             <C>      <C>                                                <C> 
John F. Ferraro                 64       Chairman of the Board                              1979
                                         Chief Executive Officer and Secretary
Robert A. Lerman                63       President and Director                             1979
Anthony C. Mirabella            56       Director                                           1985
Robert I. Lieberman             44       Treasurer and Chief Financial Officer              1986
</TABLE>

     The term of each director and officer expires when his successor is elected
and  qualified.  The  Company  does  not  have  an  executive  committee,  audit
committee,  investment  committee or stock option committee;  the Company relies
upon the full board approving matters related to such topics.

     The  following  is a  brief  account  of the  business  experience  of each
director and executive officer of the Company during the past five years.

     Robert A. Lerman holds the degrees of Bachelor of  Mechanical  Engineering,
College  of the City of New York  (1957),  Master  of  Science  in  Mathematics,
Adelphi  College  (1961),  and  Master of  Science  in  Electrical  Engineering,
University of Connecticut  (1964). In 1979, Mr. Lerman was elected Treasurer and
a Director and in 1980 President of the  predecessor  to the Company.  Since the
Company's  1981  merger,  Mr.  Lerman has been  President  and a Director of the
Company,  and from 1981 through 1992 served as Treasurer.  In 1988,  Mr. Lerman,
along with Mr.  Ferraro,  founded  Pioneer Capital Corp., of which Mr. Lerman is
Secretary,   Treasurer  and  a  Director,   a  privately  held  venture  capital
corporation.  Mr. Lerman co-authored the text book,  Nonlinear Systems Dynamics,
which was  published in 1992 by Van Nostrand  Reinhold,  New York,  New York. In
1993,  Mr.  Lerman,  along with Mr.  Ferraro,  founded  Pioneer  Partners  Corp.
("PPC"),  of which Mr.  Lerman is  Treasurer  and  Managing  Director;  PPC is a
privately held corporation  serving as the general partner of Bridge Investors I
Limited Partnership,  a partnership formed by Messrs. Lerman and Ferraro for the
purpose of providing  venture  capital  financing.  In 1997,  Mr.  Lerman became
President  and a Director of Pioneer  Ventures  Corp.  and a manager of Ventures
Management  Partners  LLC, the general  partner of Pioneer  Ventures  Associates
Limited  Partnership,  a partnership formed for the purpose of providing venture
capital financing to companies. In 1998, Mr. Lerman became a director of Initio,
Inc. Mr. Lerman has financial  interests in other  companies,  none of which are
competitive with the Company. See Item 12.

     John F.  Ferraro  holds the degree of  Bachelor  of  Science in  Industrial
Engineering,  New York  University  (1962).  In 1979,  Mr.  Ferraro  was elected
Secretary and a Director of the predecessor to the Company.  Since the Company's
1981  merger,  Mr.  Ferraro has been  Chairman of the Board and Chief  Executive
Officer of the Company.  In 1988, Mr.  Ferraro,  along with Mr. Lerman,  founded
Pioneer Capital Corp. of which Mr. Ferraro is President and a Director. In 1993,
Mr.  Ferraro,  along with Mr.  Lerman,  founded both Bridge  Investors I Limited
Partnership  and its general  partner  Pioneer  Partners  Corp.,  of which he is
Treasurer, Secretary and a Director. In 1997, Mr. Ferraro became Secretary and a
Director of Pioneer Ventures Corp. and a manager of Ventures Management Partners
LLC, the general partner of Pioneer Ventures Associates Limited Partnership. Mr.
Ferraro  has  financial  interests  in  other  companies,   none  of  which  are
competitive with the Company. See Item 12.

     Anthony  C.   Mirabella   holds  the  degrees  of  Bachelor  of  Mechanical
Engineering,  Stevens  Institute  of  Technology  (1962) and Master in  Business
Administration, Western New England College (1969). He was elected a Director of
the Company in 1985. Mr. Mirabella has been employed by 


<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 9

Connecticut  Natural Gas Corporation  since 1971, and is a Senior Vice President
of said  concern,  responsible  for the Energy  Network,  Inc.  and its district
heating and cooling operations.

     Robert I. Lieberman is a certified public  accountant.  He holds the degree
of Bachelor of Science in Accounting and Business  Administration from the State
University  of New York (1975).  Mr.  Lieberman  joined the Company as corporate
controller in 1986, in 1987 was elected  Controller and Chief Financial Officer,
and in 1992 was elected  Treasurer.  In 1995 Mr. Lieberman was elected President
of Turbotec Products, Inc., the Company's principal operating subsidiary.

     (c)  Family Relationships between Directors and Officers - None.

     (d)  Legal Proceedings. None of the described events occurred.

Certain Rights to Proceeds

     Two of the Company's three directors, Messrs. Ferraro and Lerman, currently
own 656,334 shares in which the Company has certain rights to the proceeds to be
received upon the sale of such shares which they received pursuant to 1984 stock
subscription agreements, as amended in 1988 and in 1994. Upon the sale of any of
these shares, the selling director shall pay directly to the Company at the time
of receipt of the net  proceeds  of such sale,  an amount  equal to (i) such net
sales  proceeds  ($0.40 for Messrs.  Ferraro and Lerman)  less (ii) the purchase
price paid by the  subscriber  for each share sold  (approximately  $0.21).  The
directors  retain full voting and  dispositive  control over these  shares.  The
Company has no other rights with respect to such shares.

     A total of 121,641 shares of a former director,  R. Robert Googins,  shares
are  subject  to  similar  restrictions  as  described  above  with the  company
receiving the difference between approximately $0.21 and $1.00.

Section 16(a) Beneficial Ownership Reporting Compliance

     At the fiscal  year end and through  the date  hereof,  the Company had not
received any reports from any director,  officer or principal  shareholder which
indicated on the report,  or by  calculation  based on the  transaction  receipt
dates, that any report was not filed on a timely basis.

Item 10. Executive Compensation and Transactions

     (a)-(b)  Summary of  Compensation  - The  following  table sets forth on an
accrual basis for the three most recently ended fiscal years,  the  remuneration
of each of the Company's officers whose  remuneration  exceeded $100,000 and for
all officers of the Company as a group.



<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 10


                                        SUMMARY COMPENSATION TABLE

<TABLE>
<CAPTION>
                                            Annual                        Long Term Compensation
                                                           ------------------------------------------------------
                                         Compensation                  Awards                   Payouts   Other
                                         ------------------------------------------------------------------------
                                                                                                          Company
                                                                                                          Contri-
                                                                    Restricted                            bution
                                                      Other         Stock      Options/          LTIP     to
Name/Position           Fiscal Year  Salary/Bonus     Compensation  Awards     SARS              Payouts  401(k)
- -------------           -----------  ------------     ------------  ------     ----              -------  ------
<S>                     <C>          <C>              <C>           <C>        <C>               <C>      <C> 
John F. Ferraro (1)     1998         $149,029         $3,137        $0         0 shs             $0       $398
Chairman of the Board,  1997         $158,576(3)      $2,413        $0         0 shs             $0       $0
Secretary & Director    1996         $ 85,402(2)      $2,350        $0         2,000,000 shs     $0       $0
                                                                                                
                                                                                                
Robert A. Lerman(1)     1998         $144,685         $3,450        $0         0 shs             $0       $776
President & Director    1997         $157,191(3)      $3,450        $0         0 shs             $0       $970
                        1996         $ 85,402(2)      $3,985        $0         2,000,000 shs     $0       $466
                                                                                                
                                                                                                
Robert I. Lieberman(4)  1998         $112,561         $15,330       $0         0 shs             $0       $0
Treasurer and CFO &     1997         $108,775         $750          $0         0 shs             $0       $0
President of Turbotec   1996         $ 81,926         $750          $0         150,000 shs       $0       $0
</TABLE>
- ----------

(1)  Messrs. Ferraro and Lerman entered into five year employment contracts with
     the Company effective April 1, 1996. Each employment  contract provides for
     a basic  salary at an annual  rate of $150,000  with an annual  increase at
     April 1st of each year based on increases in the Consumer Price Index. Each
     employment  contract  requires  the  Company to provide  medical  insurance
     coverage for the employee as well as $50,000 of group term  insurance,  and
     $1,500,000 of additional life insurance. During the fiscal year ended March
     31,  1998,  the  Company  paid  $108,909  in net  premiums  on the two life
     insurance  policies  which provide that upon death or  termination  of each
     such insured's employment, the Company will be repaid by the insurer and/or
     the insured the lesser of the then  existing  cash  surrender  value of the
     policy or the  aggregate  net premiums  paid by the  Company.  At March 31,
     1998, the amount receivable for premiums paid on the policies was $923,790.
     In addition,  each employment  contract contains a provision providing that
     in the event of disability,  the employee will receive disability  payments
     of $100,000  per year for ten years (with  proportional  reductions  in the
     event  of  partial  disability);  and  $5,000  per  year  for tax  planning
     services.  The contract may be terminated by the employee on 120 days prior
     written notice. The contract may also be terminated by the Company in which
     event the  employee  will be paid  termination  compensation  equal to each
     employee's  then current  salary for either the longer of the  remainder of
     the  unrenewed  term or three  years;  in the  event  there is a change  in
     control of the Company and the employee is  terminated,  the employee shall
     receive twice the amount of termination  compensation which would otherwise
     be due.

(2)  Messrs.  Ferraro and Lerman  waived all of their  salaries and benefits for
     the months of April through  September of 1995 to assist the Company in its
     cash flow needs.

(3)  In 1997, Messrs. Ferraro and Lerman each received cash bonuses of $17,500.

(4)  Mr. Lieberman entered into a 5 year employment  contract with the Company's
     primary  operating  subsidiary  effective April 1, 1996. Under the contract
     Mr.  Lieberman  is to be paid a base salary of $110,000 for the first year,
     increased  by $5,000  annually  for each of the  following  two  years.  In
     addition,  he may be paid a bonus based on performance  targets established
     by the board of directors.  The employment contract requires the Company to
     provide  certain other benefits  including  life and disability  insurance,
     subject to a maximum  cost per year.  The contract  may be  terminated  for
     "cause" immediately or by the employee on 90 days prior written notice. The
     contract may also be  terminated by the Company in which event the employee
     will be paid termination compensation for 180 days.

<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 11


     (b)  Remuneration  - For the fiscal year ending March 31, 1999, the Company
anticipates paying aggregate direct  remuneration (based on current salaries and
anticipated bonuses) of approximately $430,000 to all officers as a group (three
persons)  of which Mr.  Ferraro and Mr.  Lerman will each be paid  approximately
$155,000, Mr. Lieberman will be paid approximately $120,000.

     (c) Stock Option Plans

     1992  Incentive  Stock Option Plan - On December 16,  1991,  the  Company's
stockholders  approved the adoption of the Company's 1992 Incentive Stock Option
Plan (the "1992 Plan")  reserving  500,000 shares of the Company's  Common Stock
for  issuance  pursuant  to ISOs  which  may be  granted  under the 1992 Plan at
exercise  prices at least equal to 100% of the fair  market  value of the Common
Stock on the date of the effective date of the grant of the option.

     At June 2, 1998 no 1992 Plan ISOs were  outstanding.  No options  under the
1992 Plan were granted in fiscal year ended March 31, 1998.

     (d) Aggregated Option/SAR Exercises and Fiscal Year End Option/SAR Values -
No options were exercised by any executive officers of the Company during fiscal
year ended March 31, 1998. See also Item 10(f) and Item 12. The following  table
reflects the aggregated option exercise values at year end held by the executive
officers.

                             AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR
                                         AND FY-END OPTION VALUES

<TABLE>
<CAPTION>
                                                          Number of
                                                          Securities                 Value of
                                                          Underlying                 Unexercised
                                                          Unexercised                in-the-Money
                           Shares                         Options at                 Options at
                           Acquired                       FY-End                     FY-End ($)
Name of                    on               Value         Exercisable ("E")          Exercisable ("E")
Officer or Director        Exercise         Realized      Unexercisable ("U")        Unexercisable ("U")
- -------------------        --------         --------      -------------------        -------------------
<S>                          <C>            <C>               <C>                        <C>          
John F. Ferraro              0              $0.00             2,000,000   E              $240,000    E
Robert A. Lerman             0              $0.00             2,000,000   E              $240,000    E
Anthony C. Mirabella         0              $0.00                50,000   E              $  6,000    E
Robert I. Lieberman          0              $0.00               150,000   E              $ 18,000    E
</TABLE>

     (e) 1990  Non-Qualified  Stock  Incentive  Plan - On February 28, 1990, the
Company's stockholders approved the adoption of the Company's 1990 Non-Qualified
Stock  Incentive  Plan ("1990 Plan")  reserving  750,000 shares of the Company's
Common  Stock  for  issuance  pursuant  to the 1990  Plan in the form of a stock
option, a stock bonus, or a stock appreciation right ("SAR"). The purchase price
for the  exercise of shares  subject to any option shall not be less than 33.33%
of the fair market value ("FMV") of the shares of common stock of the Company on
the  effective  date of the  option  and in no event  shall be less than the par
value of the common stock; the value of the shares subject to any bonus shall be
equal in value to a fixed  dollar  amount and such value  shall not be less than
33.33% of the FMV of the shares of common stock of the Company on the  effective
date of the bonus and in no event shall be less than the par value of the common
stock; the value of an SAR award of stock is equal to or less than (as the Board
may  determine)  the  excess of the FMV of one share of stock on the date of the
exercise of the SAR less the


<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 12


FMV of one share of stock on the  effective  date of the  award,  the  result of
which is  multiplied by the number of shares with respect to which the SAR shall
have been exercised.

     No stock  incentives  were issued  under the 1990 Plan in fiscal year ended
March 31, 1998.

     (f) 1995 Stock Options - On May 15, 1995, the Company's  Board of Directors
approved  the  adoption of the 1995 Stock  Options  ("1995  Options")  reserving
4,920,000 shares of the Company's Common Stock for issuance in the form of stock
options.  The purchase  price for the exercise of shares  subject to the options
equaled  the fair  market  value  ("FMV") of the  shares of common  stock of the
Company on the effective date of the option,  May 19, 1995. The expiration  date
of the options has been extended  through  September,  2002. See also Item 10(d)
and Item 12.

     The  compensation  values of the  stock  incentives  received  by the named
executive  officers and  directors  of the Company  during the last three fiscal
years are  reflected  in the Summary  Compensation  Table at the column  labeled
"Restricted Stock Awards" at Item 10(a) hereof.

     (g)  Directors'  Fees - During  the  fiscal  year  ended  March  31,  1998,
directors'  fees of $3,900 were paid to the Company's one director who is not an
officer  or  employee.  It is  anticipated  that such  director  will be paid an
aggregate of  approximately  $4,000 in directors' fees in the fiscal year ending
March 31, 1999.

         (h) Employee  Retirement  Savings Plan - Effective  April 1, 1991,  the
Company adopted the  Thermodynetics,  Inc. 401(k)  Retirement  Savings Plan (the
"401(k)  Plan").  The 401(k) Plan allows  full-time  employees of the Company to
defer two to  fifteen  percent  of their  earnings  on a pre-tax  basis  through
earnings or salary  reduction  contributions to the 401(k) Plan. The Company may
in its  discretion  make  matching  contributions  in the form of the  Company's
common stock equal to a percentage of the  employees'  aggregate  contributions.
The Company has not yet determined its matching contributions to the 401(k) Plan
for the plan year ending December 31, 1998. See Note 15 of Notes to Consolidated
Financial Statements.

     The assets of the 401(k) Plan are held in trust for the  exclusive  benefit
of the  participants by the trustees of the Plan,  Messrs.  Ferraro,  Lerman and
Mirabella.  The Board of Directors  may remove the  trustees  and appoint  their
successors at any time. The Company  administers and pays all costs and expenses
of the 401(k) Plan.  The Company  presently  intends to continue the 401(k) Plan
indefinitely;  however,  the Company has  reserved  the right to  terminate  the
401(k)  Plan  by  vote  of  its  Board  of  Directors.  Upon  such  termination,
participants  will  become  fully  vested and will  receive the amounts in their
respective accounts in accordance with the terms of the 401(k) Plan. The Company
may also  amend the 401(k)  Plan at any time by a majority  vote of its Board of
Directors.

     The compensation  value of the 401(k)  participation  received by the below
listed officers and directors is reflected in the Summary  Compensation Table at
the column labeled  "Company  Contribution to 401(k) Plan" at Item 10(a) hereof.
The following table sets forth the number of shares of Common Stock  contributed
to the below referenced persons or groups of persons during the 401(k) Plan year
ended  December  31, 1997,  Column (1), and for all years from  inception of the
Plan through Plan year ended December 31, 1997, Column (2).


<PAGE>

                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 13


                                            Shares Contributed by the Company
     Name                                   and Held in Trust Under 401(k) Plan
     ----                                   -----------------------------------

     Officers and Directors                  Column (1)           Column (2)
     ----------------------                  ----------           ----------
                                                                 (Aggregate)

     John F. Ferraro(a)                          6,511               37,120
     Robert A. Lerman(a)                        12,688               49,251
     Robert I. Lieberman                            -0-              16,939
     Anthony C. Mirabella(a)                        -0-                  -0-

     All officers and directors
     as a group(a) (4 persons)                  19,199              103,310

     Total Matching Contribution                95,362              634,803
     to all employees (32 persons)

- ----------
     (a)  Trustees of the 401(k)  Plan.  Excludes the  aggregate  shares held in
          trust  by the  trustees  of the  401(k)  Plan  for  all  participating
          employees.

     (i) Compensation Committee Interlocks and Insider Participation - The Board
of Directors has not established a compensation  committee.  The compensation of
both the Chairman and the President is determined by their employment contracts.
The compensation of the Treasurer was determined by an employment contract.  See
Footnotes (1) and (4) to Summary  Compensation  Table in Item 10(a) hereof.  The
executive officers of the Company serve in a variety of executive capacities and
as directors for other corporations as described in Item 9 hereof. No activities
performed by any executive officer of the Company for any corporation or entity,
other than the  Company,  were  related to or were a factor in  determining  the
compensation of the officers and directors of the Company.

     (j) Other Plans and  Employment  Contracts - The Company  does not have any
other pension or similar plan. See Item 10(a) footnotes (1) and (2) herein as to
the Company's employment contracts with Messrs. Ferraro and Lerman which provide
for the terms of their  compensation  and  disability  and  termination  payment
provisions.

     (k) Recent Sales of Unregistered  Securities - The Company has not made any
recent sales of any unregistered securities.

     Item 11. Security Ownership of Certain Beneficial Owners and Management

     The following table sets forth, as of June 2, 1998, the number of shares of
the Company's  Common Stock owned  beneficially to the knowledge of the Company,
by each beneficial  owner of more than 5% of such Common Stock, by each director
and by all  officers  and  directors  of the  Company  as a  group.  The  shares
underlying  the ISOs held by two  officers/directors  and one officer  which are
presently exercisable are deemed beneficially owned.



<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 14

<TABLE>
<CAPTION>
Name and Address(1)                                      Amount and Nature                  Percent of
of Beneficial Owner                                   of Beneficial Ownership               Class Owned
- -------------------                                   -----------------------               -----------

Directors and Officers
- ----------------------
<S>                                                       <C>                                  <C>  
John F. Ferraro                                           3,642,039  shs (2)(6)                25.3%

Robert A. Lerman                                          3,910,151  shs (2)(7)                27.1%

Anthony C. Mirabella                                        210,086  shs(3)                     1.7%

Robert I. Lieberman                                         252,739  shs (4)                    2.0%

All officers and                                          8,181,136  shs (5)                   49.3%
directors as a group
(four persons)

Other 5% Shareholders

     None
</TABLE>
- ----------

     (1)  The address of all officers and directors is c/o the Company,  651 Day
          Hill Road, Windsor, CT 06095.

     (2)  Includes options  exercisable to acquire  2,000,000  shares;  includes
          37,120  shares  held for Mr.  Ferraro  and 49,251  shares held for Mr.
          Lerman  in  trust  under  the  Company's  401(k)  Plan,  respectively;
          includes  244,525 shares held by the spouse of Mr. Lerman,  and 33,360
          shares held by the spouse of Mr. Ferraro,  respectively;  excludes the
          aggregate  634,803  shares held in trust by the trustees of the 401(k)
          Plan for all of the participating  employees;  excludes 166,121 shares
          held by a corporation which is owned by Messrs. Lerman and Ferraro.

     (3)  Includes  options  exercisable to acquire 50,000 shares.  Excludes the
          aggregate  539,441  shares held in trust by the trustees of the 401(k)
          Plan for all of the participating employees.

     (4)  Includes  options  exercisable  to acquire  150,000  shares;  includes
          16,939 shares held in trust under the Company's 401(k) Plan.

     (5)  Includes options exercisable to acquire 4,200,000 shares;  includes an
          aggregate 103,310 shares held in trust under the Company's 401(k) Plan
          for each respective officer's account;  excludes the aggregate 634,803
          shares held in trust by the trustees of the 401(k) Plan for all of the
          participating employees. Includes 244,525 shares held by the spouse of
          Mr.  Lerman,  and 33,360  shares  held by the  spouse of Mr.  Ferraro.
          Includes  166,121  shares  held by a  corporation  which  is  owned by
          Messrs. Lerman and Ferraro.

     (6)  Mr. Ferraro contributed shares of the Company in Plan years 1991, 1992
          and 1994 in accordance  with guidelines to the John F. Ferraro Defined
          Benefit  Pension  Plan and Trust which was  established  in 1984;  the
          aggregate  holdings  of  outstanding  shares  of the  Company's  stock
          actually  issued  which  are now  owned by that  pension  plan  equals
          1,050,000  shares;  Mr.  Ferraro  intends  to  continue  to make  such
          contributions  to his pension  plan;  Mr.  Ferraro,  as Trustee of the
          Plan, has full voting authority over that pension plan's shares;  thus
          that pension plan's shares have been included Mr. Ferraro's  aggregate
          beneficial ownership calculation.

     (7)  Mr. Lerman has been annually  contributing shares of the Company which
          he owns to the  Robert  A.  Lerman  Money  Purchase  Plan  and  Trust,
          established in 1988, in accordance with its guidelines;  almost all of
          Mr. Lerman's  aggregate holdings of outstanding shares actually issued
          are now owned by that pension plan, except for those shares subject to
          the $0.40  per share  sharing  of  proceeds;  Mr.  Lerman  intends  to
          continue to make such  contributions;  Mr. Lerman,  as Trustee of that
          pension  plan,  has full voting  authority  over that  pension  plan's
          shares;  thus that  pension  plan's  shares have been  included in Mr.
          Lerman's aggregate beneficial ownership calculation.


<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 15

Item 12. Certain Relationships and Related Transactions

     (a)-(b)  Transactions  with  Management  and  Others and  Certain  Business
Relationships - During the fiscal year ended March 31, 1998, the Company has not
been engaged in transaction(s) with any officers, directors,  beneficial holders
of more than 5% of its  outstanding  voting  securities  and entities with which
they were  affiliated.  None of the  officers  and  directors of the Company are
currently engaged in businesses competitive to the business of the Company.

     (c) Reports on Form 8-K - The Company has not filed any reports on Form 8-K
with respect to or during the year ended March 31, 1998.

     (d) Indebtedness of Management - At March 31, 1998, no member of management
was indebted to the Company in excess of $60,000.

                                     PART IV

Item 13. Exhibits, Financial Statement Schedules and Reports on Form 8-K

     (a)  Financial Statements

          Independent Auditors' Report.

          Consolidated Balance Sheets - March 31, 1998 and March 31, 1997.

          Consolidated  Statements of Income and Comprehensive  Income - For The
          Years Ended March 31, 1998, 1997 and 1996.

          Consolidated  Statements of Stockholders' Equity - For The Years Ended
          March 31, 1998, 1997 and 1996.

          Consolidated  Statements of Cash Flows - For The Years Ended March 31,
          1998, 1997 and 1996.

          Notes to Consolidated Financial Statements

     (b)  Exhibits

          (3)(a)(i)      Certificate of Incorporation, as amended. (a)

          (3)(a)(ii)     February   9,  1987   Amendment   to   Certificate   of
                         Incorporation.(b)

          (3)(b)         By-Laws. (c)

          (4)(i)         Form of Common Stock certificate. (d)

          (10)(i)        $875,000 Secured Term Note dated December 4, 1997.

          (10)(ii)       Amendment of Note dated September 30, 1997 in amount of
                         $333,330.

          (10)(iii)      $460,000 Secured Term Note dated October 3, 1997.

          (10)(iv)       October  3,  1997  letter   amendment  to  Amended  and
                         Restated   Loan  and   Security   Agreement   (Accounts
                         Receivable and Inventory)  originally dated October 31,
                         1994.

<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 16

          (11)(i)        Calculations  of  Earnings   (Loss)  Per  Share.   This
                         information   is   presented  in  Footnote  10  to  the
                         Financial Statements.

          (21)           Subsidiaries - The following table indicates the wholly
                         owned  subsidiaries of  Thermodynetics,  Inc. and their
                         respective states of incorporation.


<TABLE>
<CAPTION>
         Name                               State of Incorporation              Year of Incorporation
- ------------------------------------------------------------------------------------------------------
<S>                                               <C>                                   <C> 
Turbotec Products, Inc.                           Connecticut                           1978

National Energy Systems, Inc.                     Connecticut                           1984

TPI Systems, Inc.                                 Connecticut                           1983
======================================================================================================
</TABLE>

Incorporated by Reference to:

     (a)  Exhibit 3.1 to Registration Statement on Form S-1 (File No. 2-71500)

     (b)  Exhibit  3(a)(ii) to Annual  Report on Form 10-K for fiscal year ended
          1988 (File No. 0-10707)

     (c)  Exhibit 3.2 to Registration Statement on Form S-1 (File No. 2-71500)

     (d)  Exhibit 4.1 to Registration Statement on Form S-1 (File No. 2-71500)


<PAGE>


                              Thermodynetics, Inc.
                          Annual Report on Form 10-KSB
                                     Page 17

                                   SIGNATURES

     Pursuant  to the  requirements  of  Section  13 or 15(d) of the  Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

(Registrant)
THERMODYNETICS, INC.



By: /s/ John F. Ferraro
    -----------------------------------------
    John F. Ferraro, Chairman of
    the Board, Chief Executive Officer,
    Secretary and Director

Date: June 25, 1998

     Pursuant to the  requirement of the Securities  Exchange Act of 1934,  this
report  has  been  signed  below  by the  following  persons  on  behalf  of the
registrant and in the capacities and on the dates indicated.

                                  (Registrant)
                              THERMODYNETICS, INC.

By: /s/ John F. Ferraro                      By: /s/ Robert A. Lerman
    -----------------------------------          -------------------------------
    John F. Ferraro, Chairman of                  Robert A. Lerman, President
    the Board, Chief Executive Officer,           and Director
    Secretary and Director

Date: June 25, 1998                          Date: June 25, 1998


By: /s/ Robert I. Lieberman                  By: /s/ Anthony C. Mirabella
    -----------------------------------          -------------------------------
    Robert I. Lieberman, Chief                    Anthony C. Mirabella, Director
    Financial Officer and
    Treasurer

Date: June 25, 1998                           Date: June 24, 1998



<PAGE>


================================================================================

                              THERMODYNETICS, INC.
                                AND SUBSIDIARIES

                             CONSOLIDATED FINANCIAL
                                   STATEMENTS
                          AS OF MARCH 31, 1998 AND 1997






                                  TOGETHER WITH

                          INDEPENDENT AUDITORS' REPORT



================================================================================

<PAGE>


                     THERMODYNETICS, INC. AND SUBSIDIARIES

                               TABLE OF CONTENTS




                                                                           Page

INDEPENDENT AUDITORS' REPORT                                                 1

CONSOLIDATED FINANCIAL STATEMENTS

      Consolidated Balance Sheets                                            2

      Consolidated Statements of Income and Comprehensive Income             3

      Consolidated Statements of Stockholders' Equity                        4

      Consolidated Statements of Cash Flows                                  5

      Notes to Consolidated Financial Statements                             6




<PAGE>

                          INDEPENDENT AUDITORS' REPORT

To the Board of Directors and Stockholders of
 Thermodynetics, Inc.

We have audited the  consolidated  balance  sheets of  Thermodynetics,  Inc. and
subsidiaries   (Company)  as  of  March  31,  1998  and  1997  and  the  related
consolidated  statements  of  income  and  comprehensive  income,  stockholders'
equity,  and cash flows for the years ended March 31, 1998, 1997 and 1996. These
consolidated  financial  statements  are  the  responsibility  of the  Company's
management.  Our  responsibility is to express an opinion on these  consolidated
financial statements based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards. Those standards require that we plan and perform the audits to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  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 consolidated  financial statements referred to above present
fairly, in all material respects, the financial position of Thermodynetics, Inc.
and  subsidiaries  as of  March  31,  1998 and  1997  and the  results  of their
operations  and their cash flows for the years  ended March 31,  1998,  1997 and
1996 in conformity with generally accepted accounting principles.


                                      /s/  DISANTO, BERTOLINE AND COMPANY, P.C.
                                      ---  ------------------------------------

Glastonbury, Connecticut
May 29, 1998



<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS
                             MARCH 31, 1998 AND 1997

<TABLE>
<CAPTION>
                                                                                       1998           1997
                                                                                   -----------    -----------
                                     ASSETS
<S>                                                                                <C>            <C>        
CURRENT ASSETS
    Cash                                                                           $     2,023    $     2,550
    Accounts receivable, net of allowance for doubtful
     accounts of $20,000 and $39,000 in 1998 and 1997, respectively                  1,039,078      1,227,155
    Inventories                                                                      1,448,420      1,230,566
    Prepaid expenses and other current assets                                          339,213        250,956
    Deferred income taxes                                                              100,000           --
                                                                                   -----------    -----------
            Total current assets                                                     2,928,734      2,711,227

PROPERTY, PLANT AND EQUIPMENT, net                                                   4,512,438      4,483,190

MARKETABLE EQUITY SECURITIES                                                           392,000        392,000

OTHER ASSETS                                                                         1,180,732        991,208
                                                                                   -----------    -----------
                                                                                   $ 9,013,904    $ 8,577,625
                                                                                   ===========    ===========

                      LIABILITIES AND STOCKHOLDERS' EQUITY

CURRENT LIABILITIES
    Demand note payable and current maturities of long-term debt                   $ 1,353,313    $ 1,556,991
    Accounts payable                                                                   912,435        758,914
    Accrued expenses and taxes                                                         120,831        120,454
                                                                                   -----------    -----------
            Total current liabilities                                                2,386,579      2,436,359

LONG-TERM DEBT, less current maturities included above                               2,366,345      2,101,458

STOCKHOLDERS' EQUITY
    Common stock, par value $.01 per share; authorized 25,000,000 shares, issued
      12,569,646 shares and 12,476,057 shares in 1998
      and 1997, respectively                                                           125,696        124,761
    Additional paid-in capital                                                       5,411,524      5,404,037
    Deficit                                                                           (759,719)      (972,469)
    Accumulated other comprehensive income (loss)                                     (196,000)      (196,000)
                                                                                   -----------    -----------
                                                                                     4,581,501      4,360,329
    Less: treasury stock, at cost, 256,898 shares                                      320,521        320,521
                                                                                   -----------    -----------
                                                                                     4,260,980      4,039,808
                                                                                   -----------    -----------
                                                                                   $ 9,013,904    $ 8,577,625
                                                                                   ===========    ===========
</TABLE>

  The accompanying notes are an integral part of these consolidated financial
                                  statements.

                                      - 2 -
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
           CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME
                FOR THE YEARS ENDED MARCH 31, 1998, 1997 AND 1996

<TABLE>
<CAPTION>
                                                         1998           1997           1996
                                                     -----------    -----------    -----------
<S>                                                  <C>            <C>            <C>        
NET SALES                                            $ 8,601,629    $ 8,699,341    $ 7,258,129

COST OF SALES                                          6,371,482      6,509,201      5,386,030
                                                     -----------    -----------    -----------

            Gross profit                               2,230,147      2,190,140      1,872,099

SELLING, GENERAL AND ADMINISTRATIVE
  EXPENSES                                             1,758,473      1,586,983      1,208,633
                                                     -----------    -----------    -----------

            Income from operations                       471,674        603,157        663,466

OTHER INCOME (EXPENSE)
    Other, net                                             9,608        (31,495)        27,934
    Interest expense                                    (368,532)      (323,166)      (366,842)
                                                     -----------    -----------    -----------
                                                        (358,924)      (354,661)      (338,908)
                                                     -----------    -----------    -----------
            Income before income taxes
              and extraordinary item                     112,750        248,496        324,558

PROVISION FOR (BENEFIT FROM) INCOME TAXES               (100,000)       (47,000)            --
                                                     -----------    -----------    -----------

            Income before extraordinary item             212,750        295,496        324,558

EXTRAORDINARY ITEM - gain on forgiveness of debt,
    net of income tax of $47,000                              --         72,731             --
                                                     -----------    -----------    -----------

            Net income                                   212,750        368,227        324,558

OTHER COMPREHENSIVE INCOME, net of tax
    Unrealized holding gains arising during period            --         49,000         49,000
                                                     -----------    -----------    -----------
            Other comprehensive income, net of tax            --         49,000         49,000
                                                     -----------    -----------    -----------

            Comprehensive income                     $   212,750    $   417,227    $   373,558
                                                     ===========    ===========    ===========

EARNINGS PER COMMON SHARE
            Income before extraordinary item         $      0.02    $      0.02    $      0.03
            Extraordinary item                                --           0.01             --
                                                     ===========    ===========    ===========
            Net income                               $      0.02    $      0.03    $      0.03
                                                     ===========    ===========    ===========

EARNINGS PER COMMON SHARE - ASSUMING DILUTION
            Income before extraordinary item         $      0.01    $      0.02    $      0.02
            Extraordinary item                                --             --             --
                                                     ===========    ===========    ===========
            Net income                               $      0.01    $      0.02    $      0.02
                                                     ===========    ===========    ===========
</TABLE>

  The accompanying notes are an integral part of these consolidated financial
                                  statements.

                                      - 3 -

<PAGE>

                      THERMODYNETICS, INC. AND SUBSIDIARIES
                 CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
                FOR THE YEARS ENDED MARCH 31, 1998, 1997 AND 1996



<TABLE>
<CAPTION>
                                       Common Stock                              Treasury Stock
                                ------------------------                  -------------------------
                                                             Additional
                                  Number of                   Paid-in       Number of
                                   Shares       Amount        Capital       Shares         Amount         Deficit
                                -----------   -----------   -----------   -----------    -----------    -----------
<S>                              <C>          <C>           <C>              <C>         <C>            <C>
Balance, March 31, 1995          12,271,054   $   122,710   $ 5,398,662      (256,898)   $  (320,521)   $(1,665,254)

Issuance of stock pursuant to
  401(k) plan                        96,610           967         2,897            --             --             --
Comprehensive income                     --            --            --            --             --        324,558
                                -----------   -----------   -----------   -----------    -----------    -----------

Balance, March 31, 1996          12,367,664       123,677     5,401,559      (256,898)      (320,521)    (1,340,696)

Issuance of stock pursuant to
  401(k) plan                        98,393           984         2,028            --             --             --
Issuance of stock pursuant to
  incentive plan                     10,000           100           450            --             --             --
Comprehensive income                     --            --            --            --             --        368,227
                                -----------   -----------   -----------   -----------    -----------    -----------

Balance, March 31, 1997          12,476,057       124,761     5,404,037      (256,898)      (320,521)      (972,469)

Issuance of stock pursuant to
  401(k) plan                        93,589           935         7,487            --             --             --
Comprehensive income                     --            --            --            --             --        212,750
                                -----------   -----------   -----------   -----------    -----------    -----------

Balance, March 31, 1998          12,569,646   $   125,696   $ 5,411,524      (256,898)   $  (320,521)   $  (759,719)
                                ===========   ===========   ===========   ===========    ===========    ===========

<CAPTION>

                                   Accumulated
                                      Other
                                  Comprehensive
                                  Income (Loss)      Total
                                  ------------    -----------
<S>                                <C>            <C>
Balance, March 31, 1995            $  (294,000)   $ 3,241,597

Issuance of stock pursuant to
  401(k) plan                               --          3,864
Comprehensive income                    49,000        373,558
                                   -----------    -----------

Balance, March 31, 1996               (245,000)     3,619,019

Issuance of stock pursuant to
  401(k) plan                               --          3,012
Issuance of stock pursuant to
  incentive plan                            --            550
Comprehensive income                    49,000        417,227
                                   -----------    -----------

Balance, March 31, 1997               (196,000)     4,039,808

Issuance of stock pursuant to
  401(k) plan                               --          8,422
Comprehensive income                        --        212,750
                                   -----------    -----------

Balance, March 31, 1998            $  (196,000)   $ 4,260,980
                                   ===========    ===========
</TABLE>






  The accompanying notes are an integral part of these consolidated financial
                                  statements.

                                      - 4 -

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                FOR THE YEARS ENDED MARCH 31, 1998, 1997 AND 1996

<TABLE>
<CAPTION>
                                                             1998         1997         1996
                                                          ---------    ---------    ---------
<S>                                                       <C>          <C>          <C>      
CASH FLOWS FROM OPERATING ACTIVITIES
    Net income                                            $ 212,750    $ 368,227    $ 324,558
    Adjustments to reconcile net income to net
      cash provided by operating activities:
      Depreciation and amortization                         334,858      350,068      336,867
      Deferred tax benefit                                 (100,000)     (47,000)          --
      Compensation expense pursuant to stock
        incentive plan                                           --          550           --
      Gain on forgivness of debt                                 --     (126,266)
      Unrealized and realized loss on marketable
        equity securities                                        --           --          500
      Changes in operating assets and liabilities:
         Decrease (increase) in accounts receivable         188,077      (22,443)    (367,965)
         Increase (decrease) in accounts payable            153,521     (317,808)     256,683
         Increase in accrued expenses and taxes               8,799          334       57,212
         (Increase ) decrease in other assets               (10,340)      (3,096)       4,081
         (Increase) decrease in prepaid expenses and
           other current assets                             (79,804)      18,886      (27,322)
         Increase in receivable from
           insurance companies and insureds - officers'
           life insurance, net                             (203,909)    (278,218)    (144,511)
         (Increase) decrease in inventories                (217,854)      86,092     (311,128)
                                                          ---------    ---------    ---------
              Net cash provided by operating activities     286,098       29,326      128,975
                                                          ---------    ---------    ---------

CASH FLOWS FROM INVESTING ACTIVITIES
    Proceeds from sale of marketable equity securities           --           --        8,336
    Purchases of property, plant and equipment             (347,834)    (319,378)    (259,359)
                                                          ---------    ---------    ---------
              Net cash used in investing activities        (347,834)    (319,378)    (251,023)
                                                          ---------    ---------    ---------

CASH FLOWS FROM FINANCING ACTIVITIES
    Proceeds from notes payable and long-term debt          460,949      588,677      399,055
    Principal payments on debt obligations                 (399,740)    (298,604)    (277,002)
                                                          ---------    ---------    ---------
              Net cash provided by financing activities      61,209      290,073      122,053
                                                          ---------    ---------    ---------

NET (DECREASE) INCREASE IN CASH                                (527)          21            5

CASH, beginning of year                                       2,550        2,529        2,524
                                                          ---------    ---------    ---------

CASH, end of year                                         $   2,023    $   2,550    $   2,529
                                                          =========    =========    =========
</TABLE>

  The accompanying notes are an integral part of these consolidated financial
                                  statements.

                                      - 5 -

<PAGE>

                      THERMODYNETICS, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                          MARCH 31, 1998, 1997 AND 1996

NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     CONSOLIDATION

     The   consolidated   financial   statements   include   the   accounts   of
     Thermodynetics,  Inc. (the  Company),  and its  wholly-owned  subsidiaries,
     Turbotec  Products,  Inc., TPI Systems,  Inc. and National  Energy Systems,
     Inc.  All  material   intercompany  balances  and  transactions  have  been
     eliminated in consolidation.

     NATURE OF OPERATIONS

     Thermodynetics,  Inc. is a manufacturer of high  performance,  high quality
     heat  exchangers  and flexible  connector  products  for heat  transfer and
     plumbing  applications.  The  Company  markets  its  products in the United
     States,   Canada  and  abroad  to  customers  in  the  space  conditioning,
     refrigeration,   automotive,   biomedical,   plumbing,  water  heating  and
     aerospace industries.

     USE OF ESTIMATES

     The  preparation  of financial  statements  in  conformity  with  generally
     accepted  accounting  principles  requires management to make estimates and
     assumptions  that affect the reported amounts of assets and liabilities and
     the disclosure of contingent  assets and  liabilities as of the date of the
     financial  statements,  and the  reported  amounts of revenues and expenses
     during  the  reporting  period.  Actual  results  could  differ  from those
     estimates.

     MARKETABLE EQUITY SECURITIES

     The Company  determines the appropriate  classification  of debt and equity
     securities at the time of purchase and reevaluates  such  designation as of
     each balance sheet date.

     The  Company   classifies  certain  highly  liquid  securities  as  trading
     securities.  Trading  securities  are stated at fair  value and  unrealized
     holding gains and losses are included in the determination of net income.

     Securities   that  are  not   classified  as  trading  are   classified  as
     available-for-sale.  Available-for-sale  securities  are  carried  at  fair
     value, with the unrealized  holding gains and losses,  net of tax, reported
     as other comprehensive income.

     INVENTORIES

     Inventories are valued at the lower of cost or market, with cost determined
     on a first-in, first-out basis.


                                     - 6 -
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1998, 1997 AND 1996


NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

     PROPERTY, PLANT AND EQUIPMENT

     Property,   plant  and  equipment  is  stated  at  cost.  Depreciation  and
     amortization are computed using the straight-line method over the estimated
     useful  lives  of  the  related  assets,  or,  in  the  case  of  leasehold
     improvements  and leased  property under capital lease,  over the remaining
     term of the related  lease or estimated  useful life of the related  asset,
     whichever is shorter.  Expenditures which substantially increase the useful
     lives of the related assets are capitalized. Maintenance, repairs and minor
     renewals on property and equipment are charged to operations as incurred

     INTANGIBLE ASSETS

     Patent costs are capitalized and amortized on a straight-line basis over 17
     years. Other intangibles are amortized on a straight-line  basis over their
     estimated useful lives.

     CASH EQUIVALENTS

     The Company considers all highly liquid instruments purchased with original
     maturities of three months or less to be cash equivalents.  The Company had
     no cash equivalents as of March 31, 1998 and 1997.

     INCOME TAXES

     The Company files consolidated  federal and combined state corporate income
     tax returns. Tax credits are recorded as a reduction of income taxes in the
     year realized.

     The Company recognizes deferred tax liabilities and assets for the expected
     future tax  consequences of events that have been included in the financial
     statements  or  tax  returns.  Deferred  tax  liabilities  and  assets  are
     determined based on the difference between the financial  statement and tax
     bases of assets and  liabilities  using enacted tax rates in effect for the
     year in which the differences are expected to reverse.

     STOCK OPTIONS

     In fiscal 1997,  the Company  adopted  Statement  of  Financial  Accounting
     Standards (SFAS) No. 123, "Accounting for Stock-Based Compensation",  which
     establishes a fair value based method of accounting  for an employee  stock
     option or similar equity  instrument.  SFAS No. 123 gives entities a choice
     of recognizing related  compensation expense by adopting the new fair value
     method or to continue to measure  compensation  using the  intrinsic  value
     approach under Accounting Principles Board (APB) Opinion No. 25, the former
     standard.  If the former standard for measurement is elected,  SFAS No. 123
     requires  supplemental  disclosure  to show the  effects  of using  the new
     measurement criteria. The Company intends to continue using the measurement
     prescribed by APB Opinion No. 25, and accordingly,  this pronouncement will
     not affect the  Company's  consolidated  financial  position  or results of
     operations.


                                     - 7 -
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1998, 1997 AND 1996


NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

     EARNINGS PER COMMON SHARE

     The Company has adopted Statement of Financial  Accounting Standards (SFAS)
     No. 128, "Earnings Per Share". The objective of SFAS No. 128 is to simplify
     the  standards  for  computing  earnings  per  share  (EPS)  and make  them
     comparable to international EPS standards.  It replaces the presentation of
     primary EPS with a  presentation  of basic EPS.  All prior  period EPS data
     presented  has  been  restated  to  conform  with  the  provisions  of this
     Statement.

     ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

     The Company has adopted Statement of Financial  Accounting Standards (SFAS)
     No. 130, "Reporting  Comprehensive Income," which establishes standards for
     reporting  and display of  comprehensive  income and its  components  (i.e.
     revenues,  expenses,  gains,  and  losses)  in  a  full  set  of  financial
     statements.  All prior  periods  have been  restated  to  conform  with the
     provisions of this Statement.

NOTE 2 - FINANCIAL INSTRUMENTS

     CONCENTRATIONS OF CREDIT RISK

     The Company's  financial  instruments that are exposed to concentrations of
     credit  risk  consist  primarily  of  cash,  trade  accounts   receivables,
     marketable equity securities and other assets:

     o    Cash - The Company  places its cash deposits with high quality  credit
          institutions.  Such deposits,  at times, may exceed federal depository
          insurance limits.

     o    Trade accounts receivable - The Company's customers, who are primarily
          original  equipment  manufacturers,  serve a wide  variety  of markets
          worldwide;   principal   applications  involve  the  control  of  heat
          transfer.  Total sales to  individual  customers  which  exceeded  ten
          percent of net sales  during each of the years  ended March 31,  1998,
          1997 and 1996 aggregated 56% (3 customers),  49% (3 customers) and 53%
          (3 customers),  respectively.  The Company  performs  on-going  credit
          evaluations   of  its  customers   and  generally   does  not  require
          collateral.  Allowances for potential credit losses are maintained and
          such losses have been within management's expectations.

     o    Marketable  equity  securities - The investment is concentrated in the
          common stock of a publicly  held entity and is subject to risks of the
          market as a whole and the industries in which the entity operates.


                                     - 8 -
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1998, 1997 AND 1996


NOTE 2 - FINANCIAL INSTRUMENTS (Continued)

     CONCENTRATIONS OF CREDIT RISK (Continued)

     o    Other assets include a receivable relating to officers' life insurance
          (see  Note 6) which  represents  the net  aggregate  proceeds  due the
          Company from the insurers and insured for the  reimbursement of policy
          premiums.  Certain  rights  to cash  value  and  proceeds  from  these
          policies have been assigned to the Company in order to secure  amounts
          due.

     FAIR VALUE OF FINANCIAL INSTRUMENTS

     Statement of Financial  Accounting  Standards (SFAS) No. 107, Fair Value of
     Financial  Instruments,  requires disclosure of the fair value of financial
     instruments for which the determination of fair value is practicable.  SFAS
     No. 107 defines the fair value of a financial  instrument  as the amount at
     which the instrument  could be exchanged in a current  transaction  between
     willing parties.

     The carrying amounts of the Company's  financial  instruments  approximates
     their fair value as outlined below:

     o    Cash,  trade  receivables,  trade  payables  -  The  carrying  amounts
          approximate  their fair value  because of the short  maturity of those
          instruments.

     o    Marketable  equity  securities  -  Marketable  equity  securities  are
          carried at fair value which is determined using quoted market prices.

     o    Management has determined  that it is not  practicable to estimate the
          fair value of the  receivable  relating to  officers'  life  insurance
          since these related party advances have no scheduled  repayment  terms
          and the  availability of similar  financing from unrelated  lenders is
          uncertain.

     o    Demand note payable - The carrying amount  approximates  fair value as
          the demand note payable has a variable  interest rate which fluctuates
          with the market.

     o    Long-term debt - The carrying  amount  approximates  fair value as the
          interest  rates  on  the  various  notes   approximate  the  Company's
          estimated incremental borrowing rate.

     The  Company's  financial  instruments  are held  for  other  than  trading
     purposes.



                                     - 9 -
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1998, 1997 AND 1996


NOTE 3 - INVENTORIES

     The major classes of inventories consist of the following as of March 31:

                                                       1998               1997
                                                  -----------        ---------

           Raw materials                            $ 910,993        $  666,419
           Work-in-process                            299,895           208,626
           Finished goods                             237,532           355,521
                                                     --------       -----------
                                                   $1,448,420        $1,230,566

NOTE 4 - PROPERTY, PLANT AND EQUIPMENT

     Property, plant and equipment consists of the following as of March 31:

                                                       1998              1997
                                                    ----------        ----------
            
            Land                                    $  204,484        $  204,484
            Buildings                                3,676,096         3,676,096
            Machinery and equipment                  3,565,173         3,369,729
            Furniture and fixtures                     849,149           765,290
            Improvements                               668,350           599,819
                                                    ----------        ----------
                                                     8,963,252         8,615,418
            Less: accumulated depreciation           4,450,814         4,132,228
                                                    ----------        ----------
                                                    $4,512,438        $4,483,190

     Depreciation expense totaled $318,586,  $316,072 and $317,571 for the years
     ended March 31, 1998, 1997 and 1996, respectively.



                                     - 10 -
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1998, 1997 AND 1996


NOTE 5 - MARKETABLE EQUITY SECURITIES

     The cost and market values of marketable equity securities  (common stocks)
     as well as the gross unrealized gains and losses are as follows:

<TABLE>
<CAPTION>
                                                                     March 31,
                           -----------------------------------------------------------------------------------------------
                                              1998                                         1997
                           --------------------------------------------    -----------------------------------------------
                                        Gross      Gross                            Gross             Gross             
                                     Unrealized  Unrealized     Market             Unrealized      Unrealized     Market
                             Cost       Gain       Loss         Value       Cost      Gain            Loss        Value
                           --------- ----------  ---------    ---------     ----   ----------      ---------      ------ 
              <S>          <C>         <C>       <C>          <C>         <C>         <C>           <C>          <C>      
              Noncurrent                                                                                                  
                 Common                                                                             
                  stock    $ 588,000   $    --   $(196,000)   $ 392,000   $ 588,000   $  --         $(196,000)   $ 392,000
                           =========   =======   =========    =========   =========   =====         =========    =========
</TABLE>
                    
     The  Company  owns  49,000  shares  of  common  stock  of  a  developer  of
     cogeneration  projects which has been  classified as noncurrent  marketable
     equity  securities.  As of March  31,  1998  and  1997,  accumulated  other
     comprehensive  loss totaling  $196,000 has been  included in  stockholders'
     equity to reflect the excess of the cost basis over market value.

     Realized and unrealized gain (loss) on current marketable equity securities
     of $-0-,  $-0- and $(500) are  included in other income for the years ended
     March 31, 1998, 1997 and 1996, respectively.

NOTE 6 - OTHER ASSETS

     Other assets consist of the following as of March 31:

<TABLE>
<CAPTION>
                                                                        1998         1997   
                                                                     ----------   ----------
            
            <S>                                                      <C>          <C>       
            Land contiguous to principal facility                    $  116,593   $  115,111
            Deferred assets                                               5,125        8,468
            Intangible assets, net of accumulated amortization of
              $376,748 and $360,476 in 1998 and 1997, respectively      127,623      142,136
            Officers' life insurance premiums receivable, net           923,790      719,881
            Deposits                                                      7,601        5,612
                                                                     ----------   ----------
                                                                     $1,180,732   $  991,208
                                                                     ==========   ==========
</TABLE>

     Amortization  expense  totaled  $16,272,  $19,296 and $19,296 for the years
     ended March 31, 1998, 1997 and 1996, respectively.



                                     - 11 -
<PAGE>



                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1998, 1997 AND 1996


NOTE 7 - DEMAND NOTE PAYABLE

     The Company has a demand note  agreement  which  provides  for  borrowings,
     based on a collateral formula,  up to a maximum of $1,800,000.  Interest is
     payable monthly on amounts outstanding at the bank's base lending rate plus
     1.0% (9.5% at March 31, 1998). Borrowings outstanding at March 31, 1998 and
     1997 totaled $1,061,747 and $1,303,813, respectively.

     The demand note and term notes payable (see Note 8) are  collateralized  by
     substantially   all  assets  of  the  Company,   excluding   the  Company's
     multi-purpose  building. In addition,  the Company must comply with certain
     financial and non-financial  covenants,  noncompliance  with which would be
     considered  an event of  default  and  provide  the bank  with the right to
     demand repayment prior to each loan's respective  maturity date. The demand
     note may be terminated by either party with thirty days written notice.

NOTE 8 - LONG-TERM DEBT

     Long-term  debt  consists  of the  following  as of  March  31: 

<TABLE>
<CAPTION>
                                                                        1998          1997
                                                                    ----------    ----------
<S>                                                                 <C>           <C>       
            Mortgage note payable - principal facility              $  845,832    $  694,420
            Mortgage note payable - multi-purpose building           1,066,530     1,086,400
            Term notes payable                                         708,326       523,931
            Other notes payable                                         37,223        49,885
                                                                    ----------    ----------
                                                                     2,657,911     2,354,636
            Less:  current maturities                                  291,566       253,178
                                                                    ----------    ----------
                                                                    $2,366,345    $2,101,458
                                                                    ==========    ==========
</TABLE>

     On October 3, 1997,  the Company  obtained a secured  term note from a bank
     which  replaced two previous term notes dated May 24, 1993 and February 22,
     1994. The $460,000 note requires monthly  principal  installments of $7,667
     plus interest at the bank's  lending rate plus 1% (9.5% at March 31, 1998),
     maturing  on  December 1, 2002.  The note is secured by  substantially  all
     assets of the Company.

     On December 4, 1997,  the Company  obtained a secured term note from a bank
     from which the proceeds  replaced a mortgage  note payable on the Company's
     principal  facility  and the  remainder  was used as  payment  against  the
     Company's demand note payable. The $875,000 note requires monthly principal
     installments  of $7,292  (except  the last  installment  which shall be the
     unpaid  balance) plus interest at the bank's  lending rate plus 1% (9.5% at
     March 31,  1998),  maturing  on  December  1, 2002.  The note is secured by
     substantially all of the assets of the Company.



                                     - 12 -
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1998, 1997 AND 1996


NOTE 8 - LONG-TERM DEBT (Continued)

     On June 25, 1996, the Company  refinanced the mortgage on its multi-purpose
     building by obtaining a 10 year,  $1,100,000  mortgage  note  payable.  The
     mortgage note is secured by a first mortgage on the multi-purpose  building
     (see Note 10) and a second  mortgage on the Company's  principal  facility.
     The note is payable in monthly  installments  of principal  and interest of
     $10,510.  The note has a fixed interest rate of 9.72% through August,  2001
     at which time the  interest  rate will be  adjusted as defined in the note.
     The Company recorded an extraordinary  gain of $119,731 resulting from debt
     forgiven upon refinancing.

     Maturities  of long-term  debt for each of the years  succeeding  March 31,
     1998 are as follows:

              Year ending March 31,
                   1999                                          $  291,566
                   2000                                             297,684
                   2001                                             297,961
                   2002                                             260,905
                   2003 and thereafter                            1,509,795
                                                                 ----------
                                                                 $2,657,911
                                                                 ==========
                                             
NOTE 9 - STOCKHOLDERS' EQUITY

     STOCK OPTIONS

     In February 1990,  the  stockholders  approved the Company's  Non-Qualified
     Stock  Incentive  Plan  (the 1990  Plan)  reserving  750,000  shares of the
     Company's common stock for issuance pursuant to options, stock appreciation
     rights  (SAR) or stock  awards  which may be  granted  under the 1990 Plan.
     Participation  in the 1990  Plan and the type and  amount  of the  award or
     grant  to be  made to each  participant  are  determined  by the  Board  of
     Directors.  Through  March 31,  1998,  no options or SARs had been  granted
     under the 1990 Plan, however a total of 304,500 shares have been granted of
     which no shares were issued to employees and directors  during fiscal years
     1998, 1997 and 1996. At March 31, 1998, 445,500 shares remain available for
     grant under the 1990 Plan.

     In December 1991, the stockholders  approved the Company's  Incentive Stock
     Option Plan (the 1992 ISO Plan)  reserving  500,000 shares of the Company's
     common stock for issuance  pursuant to options  which may be granted  under
     the 1992 ISO Plan at exercise  prices equal to the market value on the date
     of grant.  The terms of the 1992 ISO Plan are  essentially  the same as the
     1982 ISO Plan.  Through  March 31, 1998,  140,000  options had been granted
     under the 1992 ISO plan at an exercise price of $.34 per share all of which
     expired without exercise as of March 31, 1998.


                                     - 13 -
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1998, 1997 AND 1996

NOTE 9 - STOCKHOLDERS' EQUITY (Continued)

     STOCK OPTIONS (Continued)

     In May,  1995,  the Board of Directors  granted  options to  employees  and
     directors  which provide the  opportunity  to purchase a total of 4,920,000
     shares  of common  stock at an  exercise  price of $.055 per share  (market
     price at the date of issuance).  All  employees  and  directors  were fully
     vested at the time of issuance  and the  options  expire on  September  30,
     2002. Through March 31, 1998, 10,000 shares have been issued as a result of
     the exercise of options,  resulting in a charge to  operations  of $-0- and
     $550 for the years ended March 31, 1998, 1997, and 1996, respectively.

     A summary of the status of the  Company's  four  stock  option  plans as of
     March 31, 1998,  1997 and 1996 and changes during the years ending on those
     dates is presented below:


<TABLE>
<CAPTION>
                                          1998                              1997                                  1996
                             --------------------------------    ------------------------------   ---------------------------------
                               Outstanding         Price          Outstanding         Price       Outstanding            Price
                             ----------------   -------------    --------------  --------------   --------------  -----------------
<S>                                <C>          <C>      <C>         <C>          <C>                <C>           <C>       
Outstanding at beginning                                                                                         
  of year                          5,322,500    $.055 to .39         5,435,000    $ .055 to .5625      540,000     $ .172 to .5625
Granted                             -           $        -                   -    $   -              4,920,000     $ .055
Excercised                          -           $        -             (10,000)   $ .055                     -     $   -
Canceled                            (412,500)   $.39 to .5313         (102,500)   $ .39 to .5313       (25,000)    $ .39 to .5313
                                   ----------                        ----------                      ----------  
Outstanding at end of year         4,910,000    $ .055               5,322,500    $ .055 to .39      5,435,000     $ .055 to .5625
                                   ==========                        ==========                      ==========  
</TABLE>

     Effective  April 1, 1996,  the Company has adopted  Statement  of Financial
     Accounting   Standards   (SFAS)  No.  123,   "Accounting   for  Stock-Based
     Compensation".  In  accordance  with the  provisions  of SFAS No. 123,  the
     Company applies APB Opinion No. 25 in accounting for its stock option plans
     and, accordingly,  does not recognize  compensation cost at the grant date.
     If the Company had elected to recognize compensation cost based on the fair
     value of the options  granted at grant date as  prescribed by SFAS No. 123,
     net income and income per share  would have been  adjusted to the pro forma
     amounts indicated below:

     The fair value of each option  grant is estimated on the date of grant with
     the following assumptions:

           Expected dividend yield                                          0%
           Expected volatility                                             42%
           Risk-free interest rate                                        6.5%
           Expected life of options                                  76 months


                                     - 14 -
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1998, 1997 AND 1996

NOTE 9 - STOCKHOLDERS' EQUITY (Continued)

                STOCK OPTIONS (Continued)

<TABLE>
<CAPTION>
                                                                              Year Ended March 31,
                                               -------------------------------------------------------------------------------------
                                                           1998                        1997                          1996
                                               ---------------------------  ------------------------    ---------------------------
                                               As Reported      Pro Forma   As Reported    Pro Forma    As Reported       Pro Forma
                                               -----------     -----------  -----------    ---------    ------------     -----------
<S>                                               <C>             <C>          <C>          <C>             <C>             <C>     
Income:
Income before extraordinary
    item                                          $212,750        $212,750     $295,496     $187,806        $324,558        $280,278
  Extraordinary gain                                    --              --       72,731       72,731              --              --
                                               -----------     -----------     --------     --------     -----------     -----------
  Net income                                      $212,750        $212,750     $368,227     $260,537        $324,558        $280,278
                                               ===========     ===========     ========     ========     ===========     ===========

Income per common share:
  Income before extraordinary
    item                                              $.02            $.02         $.02         $.02            $.02            $.02
  Extraordinary gain                                    --              --           --           --              --              --
                                               -----------     -----------     --------     --------     -----------     -----------
  Net income                                          $.02            $.02         $.02         $.02            $.02            $.02
                                               ===========     ===========     ========     ========     ===========     ===========
</TABLE>

NOTE 10 - EARNINGS PER COMMON SHARE

     A  reconciliation  of the  numerators  and  denominators  of the  basic and
     diluted  Earnings Per Common Share (EPS)  computations  for "income  before
     extraordinary  items" for the years ended March 31, 1998,  1997 and 1996 is
     as follows:


<TABLE>
<CAPTION>
                                            1998                                  1997                            1996
                                   ------------------------------      -----------------------------      -------------------------
                                    Income              Shares           Income           Shares            Income        Shares
                                 (Numerator)        (Denominator)      (Numerator)     (Denominator)      (Numerator)  (Denominator)
                                 -----------        ------------       -----------     -------------      ----------   - -----------
<S>                                <C>               <C>               <C>               <C>               <C>            <C>  
Income before extraordinary                                                                                                
 item                              $ 212,750                            $ 295,496                          $ 324,558
                                   ---------                            ----------                         ---------
                                                                                                          
Basic EPS                                                                                                 
 Income available to common                                                                               
  stockholders                       212,750         12,550,159           295,496        12,444,721          324,558      12,331,767
                                                                                                          
Effect of Dilutive Securities                                                                             
  Stock options                           --          3,131,014                --         3,722,297               --       2,070,665
                                     -------                              --------                           -------
                                                                                                          
Diluted EPS                                                                                               
Income available to common                                                                                
  stockholders  including                                                                                 
  assumed  conversions             $ 212,750         15,681,173         $ 295,496        16,167,018        $ 324,558      14,402,432
                                   =========         ===========        ==========       ==========        =========      ==========
</TABLE>



                                     - 15 -
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1998, 1997 AND 1996

NOTE 11 - RENTAL OF MULTI-PURPOSE BUILDING

     The Company leases a portion of its multi-purpose  building (see Note 8) to
     an unrelated tenant under an agreement which expires July 31, 1999.  Rental
     income  aggregated  $45,042,  $43,374 and $44,051 for the years ended March
     31, 1998, 1997 and 1996,  respectively,  and is included in other income in
     the  accompanying  consolidated  statements  of  income  and  comprehensive
     income.

NOTE 12 - RESEARCH AND DEVELOPMENT COSTS

     Research   and   development   costs   charged  to  selling,   general  and
     administrative  expenses amounted to $120,115,  $97,628 and $93,326 for the
     years ended March 31, 1998, 1997 and 1996, respectively.

NOTE 13 - ADVERTISING

     The Company expenses the production costs of advertising when the costs are
     incurred.  Advertising expense totaled $35,189, $28,829 and $21,615 for the
     years ended March 31, 1998, 1997, and 1996, respectively.

NOTE 14 - INCOME TAXES

     The provision for (benefit from) income taxes consists of the following:

                                  1998              1997              1996
                               ---------          --------          --------
        Current
          Federal              $      --          $     --          $     --
          State                       --                --                --
                               ---------          --------          --------
                               ---------          --------          --------
        Deferred                (100,000)          (47,000)               --
                               ---------          --------          --------
                               $(100,000)         $(47,000)         $     --
                               =========          ========          ========

     The  alternative  minimum tax (AMT) had no effect on the tax  provision for
     financial  reporting  purposes,  as the Company's AMT income was completely
     offset by application of AMT net operating loss  carryforwards  and the AMT
     exemption.  For 1998, 1997 and 1996, the Company had no liability for state
     taxes based upon income.  State taxes  accrued were based on net worth and,
     accordingly, included in selling, general and administrative expenses.



                                     - 16 -
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1998, 1997 AND 1996

NOTE 14 - INCOME TAXES (Continued)

     The provision for income taxes differs from the amount computed by applying
     the  statutory  rate of 34% for fiscal years 1998,  1997 and 1996 to income
     before income taxes.  The principal  reasons for this difference are listed
     in the following table:

                                                    1998       1997       1996
                                                    ----       ----       ----
        
        Statutory federal income tax                  34%        34%        34%
        Insurance                                    (28)       (22)        --
        Amortization and other                        14         10         --
        Utilization of net operating loss
          carryforwards                              (80)        48        (34)
        Change in valuation allowance                (29)       (89)        --
                                                    ----       ----       ----
                                                     (89)%      (19)%      - %
                                                    ====       ====       ====

     The significant components of the deferred tax provision are as follows:

                                             1998           1997           1996
                                        ---------      ---------      ---------

Net operating loss - federal            $(122,000)      $120,000      $(293,000)
Net operating loss - state                 33,000         75,000        (13,000)
Other                                       1,000             --         (3,000)
Uniform capitalization                      3,000         (3,000)         5,000
Property and equipment, net                17,000        497,000         38,000
Valuation allowance                       (32,000)      (736,000)       266,000
                                        ---------      ---------      ---------
                                        $(100,000)      $(47,000)     $      --
                                        =========      =========      =========

     The  components  of the net  deferred tax accounts as of March 31, 1998 and
     1997 are as follows:

                                                          1998             1997
                                                   -----------      -----------
Deferred tax assets:
  Valuation allowance                                $(145,000)       $(177,000)
  Inventory reserve                                     14,000            8,000
  Allowance for doubtful accounts                        8,000           15,000
  Uniform capitalization                                34,000           37,000
  Net operating loss - state                            18,000           51,000
  Investment tax credits                               144,000          144,000
  Net operating loss - federal                         965,000          843,000
                                                   -----------      -----------
    Total deferred tax asset                         1,038,000          921,000

Deferred tax liabilities:
  Property and equipment, net                         (938,000)        (921,000)
                                                   -----------      -----------
    Total deferred tax liability                      (938,000)        (921,000)
                                                   -----------      -----------

   Net deferred tax asset (liability)                 $100,000      $        --
                                                   ===========      ===========


                                     - 17 -
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1998, 1997 AND 1996

NOTE 14 - INCOME TAXES (Continued)

     The Company has  $2,400,000 of net operating  losses for federal income tax
     reporting  purposes available for carryforward which expire in years ending
     March 31, 2000 through 2010.  Differences  between financial  reporting and
     tax reporting  relate  primarily to inventory  reserves and  allowances for
     doubtful  accounts  recorded for financial  reporting  purposes,  inventory
     capitalization   adjustments   recorded  for  tax  reporting  purposes  and
     differences between  depreciation for financial reporting and tax reporting
     purposes. Unused tax credit carryovers totaled approximately $144,000 as of
     March 31, 1998 and expire in years ending March 31, 1999 through 2001.

     The Company  establishes  a valuation  allowances  in  accordance  with the
     provisions  of SFAS No. 109,  "Accounting  for Income  Taxes".  The Company
     continually  reviews the adequacy of the valuation allowance and recognizes
     a benefit from income  taxes only when  reassessment  indicates  that it is
     more likely than not that the benefits  will be  realized.  In fiscal 1998,
     the  Company  reduced  the  valuation  allowance  applied  against  the net
     operating loss carryforwards by approximately $32,000 based upon reasonable
     and prudent tax planning strategies and future income projections.

NOTE 15 - 401(k) PLAN

     The Company has a 401(k) plan which covers all participating  employees who
     are over the age of 21 years  and have at least  one year of  service.  The
     Company may elect to make a matching  contribution equal to a percentage of
     employee contributions,  subject to IRS regulations. Matching contributions
     are made, in the form of Company  common stock,  subsequent to the close of
     the plan year.  Contributions  for the years ended March 31, 1998, 1997 and
     1996 totaled $5,483, $4,790 and $3,012, respectively.

NOTE 16 - EMPLOYMENT CONTRACTS

     On April 1, 1996, the Company entered into  employment  agreements with two
     of its  employees  which  expire on March 31,  2001.  After that date,  the
     employment  relationships  will  continue  from year to year unless  either
     party provides the other with written notice of intent not to renew.  These
     agreements  provide for combined  annual base  salaries of $205,000 for the
     fiscal year ended March 31, 1997,  and $215,000 for the fiscal years ending
     March 31, 1999, 2000, and 2001. The employees may also earn a discretionary
     bonus based on performance targets established by the Board of Directors.

     The Company has also entered into employment  agreements with two employees
     and  directors  which also expire on March 31,  2001.  At the option of the
     employees,  the agreements may be renewed for one additional five year term
     under the same terms and conditions. These agreements provide for an annual
     base  salary of  $150,000  each,  updated  annually  for  increases  in the
     Consumer  Price  Index,  as well as certain  medical,  life and  disability
     insurance  coverage.  In addition,  upon death, the employees'  estate will
     receive  the  amount by which the cash  surrender  value on life  insurance
     policies exceeds the net premiums paid by the Company (see Note 6).



                                     - 18 -
<PAGE>

                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1998, 1997 AND 1996


NOTE 16 - EMPLOYMENT CONTRACTS (Continued)

     In  the  event  of  termination,   all  four  agreements  provide  for  the
     continuation of compensation and benefits.  However,  the employees may not
     compete with the Company within the United States for a period of two years
     after termination.

NOTE 17 - CASH FLOW INFORMATION AND NONCASH INVESTING AND FINANCING ACTIVITIES

     A summary of cash paid for  interest  and income taxes and a summary of the
     Company's  noncash  investing and financing  activities for the years ended
     March 31, 1998, 1997 and 1996 is as follows:


<TABLE>
<CAPTION>
                                                      Year Ended March 31,
                                              ------------------------------------
                                                 1998         1997         1996
                                              ----------   ----------   ----------
<S>                                           <C>            <C>        <C>       
CASH PAID
Interest                                      $  368,532     $322,783   $  366,459
Income taxes                                          --           --           --

NON-CASH INVESTING AND FINANCING ACTIVITIES
Long-term debt incurred to acquire
  property, plant and equipment               $       --     $ 45,858   $       --

Issuance of stock pursuant to 401(k) plan          8,422        3,012        3,864

Unrealized holding gain on long-term
  investment                                          --       49,000       49,000

Consolidation of long-term debt                1,335,000           --           --
</TABLE>

NOTE 18 - OTHER COMPREHENSIVE INCOME

     Other comprehensive income is reflected net of a provision for income taxes
     totaling $-0- for each of the years ended March 31, 1998, 1997 and 1996.



                                     - 19 -


                                                                   EXHIBIT 10(i)



                                SECURED TERM NOTE


$875,000.00                                                     December 4, 1997
                                                           Boston, Massachusetts

     For value received, the undersigned promises to pay to USTrust ("Bank"), or
order,  at Bank,  the  principal  sum of  Eight  Hundred  Seventy-Five  Thousand
($875,000.00)  Dollars in sixty (60)  installments,  as  follows:  $7,292.00  on
January 1, 1998,  and the same  amount on the same day of each month  thereafter
until fifty-nine (59)  installments  have been made, and a final  installment in
the amount of  $444,772.00  on December  1, 2002,  with  interest  from the date
hereof  on the said  principal  sum from  time to time  outstanding  at the Base
Lending Rate for  commercial  loans from time to time in effect at the Bank plus
one (1%) percent per annum. Such interest shall be payable monthly in arrears on
the  first  day of each  month,  commencing  on the  first  of such  dates  next
succeeding  the date hereof.  The term "Base  Lending Rate" as used herein shall
mean the rate of interest announced by Bank from time to time at its head office
as its Base Lending Rate, it being understood that such rate is a reference rate
and not  necessarily the lowest rate of interest  charged by the Bank.  Interest
shall be calculated on the basis of actual days elapsed and a 360 day year.

     In all events the  entire  principal  balance,  together  with all  accrued
interest is to be fully paid on December 1, 2002.

     At the option of the holder,  this note shall  become  immediately  due and
payable  without  notice or demand upon the occurrence at any time of any of the
following events of default:  (1) the failure by the undersigned to pay when due
any principal, interest, fees, costs and expenses due to the holder hereunder or
otherwise;  (2) if any  statement,  representation  or  warranty  made  in or in
connection with the loan evidenced by this note, or in any supporting  financial
statement of the  undersigned or of any guarantor  hereof shall be found to have
been  false in any  material  respect;(3)  the  institution  by or  against  the
undersigned or any guarantor  hereof of any proceedings  pursuant to Title 11 of
the United  States  Code  entitled  "Bankruptcy"  (commonly  referred  to as the
Bankruptcy  Code) or any  other law in which the  undersigned  or any  guarantor
hereof is alleged to be  insolvent  or unable to pay their  respective  debts as
they  mature or the  making by the  undersigned  or any  guarantor  hereof of an
assignment for the benefit of creditors;  (4) the service upon the holder hereof
of a writ in which the holder is named as trustee of the  undersigned  or of any
guarantor  hereof; or (5) termination for any reason of the Amended and Restated
Loan and Security  Agreement  (Accounts  Receivable and Inventory) dated October
31,  1994,  as  amended,  between  the Bank and  Turbotec  Products,  Inc.  (the
"Agreement").



<PAGE>


     This note may be  prepaid  in whole or in part at any time and from time to
time without  penalty or premium,  provided  that any such  prepayment  shall be
applied  to the  installments  due  hereunder  in the  inverse  order  of  their
maturity.

     Any deposits or other sums at any time  credited by or due from the Bank to
the undersigned or any guarantor hereof, and any securities or other property of
the undersigned or any such guarantor, in the possession of the Bank, may at any
and all times be held and treated as security for the payment of the liabilities
hereunder; and the Bank may apply or set off such deposits or other sums, at any
time, and without notice to the  undersigned or to any such  guarantor,  against
any of such  liabilities,  whether or not the same have matured,  and whether or
not other collateral is available to the Bank.

     The undersigned agrees to pay all costs of collection  including reasonable
fees of attorneys.

     No delay or  omission  on the part of the  holder in  exercising  any right
hereunder  shall operate as a waiver of such right or of any other right of such
holder, nor shall any delay,  omission or waiver on any one occasion be deemed a
bar to or waiver of the same or any other  right on any future  occasion.  Every
one of the  undersigned  and every indorser or guarantor of this note regardless
of the time, order or place of signing waives presentment,  demand,  protest and
notices of every kind and assents to any one or more extensions or postponements
of the time of payment or any other indulgences, to any substitutions, exchanges
or  releases  of  collateral  if at any time  there be  available  to the holder
collateral  for this note, and to the additions or releases of any other parties
or persons primarily or secondarily liable.

     This note is secured pursuant to the terms of an Open-End  Mortgage Deed of
even  date  herewith  on  property  located  at  651  Day  Hill  Road,  Windsor,
Connecticut, and a Security Agreement - Inventory, Accounts, Equipment and Other
Property dated September 4, 1992.

     All rights and  obligations  hereunder  shall be governed by the law of the
Commonwealth of Massachusetts and this note shall be deemed to be under seal.

Witness:                                      THERMODYNETICS, INC.


/s/                                            By: /s/ 
- ---------------------------                       ------------------------------



                                     - 2 -



                                                                  EXHIBIT 10(ii)


                                AMENDMENT OF NOTE


     AGREEMENT made as of the 30th day of September, 1997, by and among USTrust,
a  Massachusetts  trust  company with a principal  place of business at 30 Court
Street, Boston, Massachusetts 02108 (hereinafter called "Bank"), Thermodynetics,
Inc.,  a Delaware  corporation,  and  Turbotec  Products,  Inc.,  a  Connecticut
corporation,  both with a  principal  place of  business  at 651 Day Hill  Road,
Windsor,   Connecticut  06095  (hereinafter,   jointly  and  severally,   called
"Borrower").

     WHEREAS,  Bank  is the  holder  of a  Secured  Term  Note  in the  original
principal  amount  of Four  Hundred  Thousand  ($400,000.00)  Dollars,  of which
Borrower is the maker, dated October 17, 1996 (the "Note"); and

     WHEREAS, Bank and Borrower wish to extend and amend the terms of the Note.

     NOW THEREFORE,  Bank and Borrower agree each for  themselves,  their heirs,
representatives, successors and assigns as follows:

     1.  The  present  principal  balance  of  the  Note  is now  Three  Hundred
Thirty-Three  Thousand Three Hundred Thirty  ($333,330.00)  Dollars and the time
for payment of the Note shall be in or within fifty (50) months with interest at
the Base  Lending  Rate from time to time in effect  plus one (1%)  percent  per
annum.

     2. The principal sum of Three Hundred  Thirty-Three  Thousand Three Hundred
Thirty  ($333,330.00)  Dollars  shall be payable in fifty (50)  installments  as
follows:  $6,667.00  on October 1, 1997,  and the same  amount  (except the last
installment  which  shall be the unpaid  balance) on the first day of each month
thereafter  until the Note is fully paid,  together  with interest from the date
hereof  on the said  principal  sum from  time to time  outstanding  at the Base
Lending  Rate from time to time in  effect  at Bank  plus one (1%)  percent  per
annum.  Such  interest  shall be payable  monthly in arrears on the first day of
each  month,  commencing  on the first of such  dates next  succeeding  the date
hereof.  The term  "Base  Lending  Rate" as used  herein  shall mean the rate of
interest  announced  by Bank  from  time to time at its head  office as its Base
Lending Rate,  it being  understood  that such rate is a reference  rate and not
necessarily  the lowest  rate of  interest  charged by Bank.  Interest  shall be
calculated on the actual days elapsed in a 360 day year.

     3. All of  Bank's  rights  under  the Note and  Mortgage,  except as herein
expressly  changed,  shall continue during the term of the Note and Mortgage and
during the term as extended by this Agreement.

     IN WITNESS  WHEREOF,  the parties have caused this Agreement to be executed
as a sealed instrument as of the day and year first above written.

                                                    THERMODYNETICS, INC.

/s/                                         By: /s/ 
- ------------------------------                  --------------------------------
Witness                                         Robert A. Lerman, President

                                            TURBOTEC PRODUCTS, INC.

/s/                                         By: /s/ 
- ------------------------------                  --------------------------------
Witness                                          Robert I. Lieberman, President 
                                                 and Treasurer

                                            USTRUST

/s/                                         By: /s/ 
- ------------------------------                  --------------------------------
Witness                                         D. Michael Murray, Vice 
                                                    President



                                                                 EXHIBIT 10(iii)


                                SECURED TERM NOTE

$460,000.00                                                      October 3, 1997
                                                           Boston, Massachusetts

     For value received, the undersigned,  jointly and severally, promise to pay
to  USTrust  ("Bank"),  or  order,  at its  office at 30 Court  Street,  Boston,
Massachusetts  02108,  or at such other place as may be designated in writing by
the  holder   hereof,   the  principal  sum  of  Four  Hundred  Sixty   Thousand
($460,000.00)  Dollars in sixty (60)  installments,  as  follows:  $7,667.00  on
December 1, 1997, and the same amount (except the last  installment  which shall
be the unpaid balance) on the first day of each month thereafter until this note
is fully paid, with interest from the date hereof on the said principal sum from
time to time  outstanding  at the Base  Lending  Rate plus one (1%)  percent per
annum.  Such  interest  shall be payable  monthly in arrears on the first day of
each  month,  commencing  on the first of such  dates next  succeeding  the date
hereof.  Interest  shall be calculated on the basis of actual days elapsed and a
360 day year.  If this note is not paid in full on the date of  maturity or upon
the  exercise  by the  holder of its  rights  in the event of the  undersigned's
default,   interest  on  unpaid  balances  shall  thereafter  be  payable  at  a
fluctuating interest rate per annum equal to three (3%) percent greater than the
rate of interest specified herein.

     The term "Base Lending Rate" as used herein shall mean the rate of interest
announced  by Bank from time to time,  at its head  office,  as its Base Lending
Rate,  it  being  understood  that  such  rate  is a  reference  rate,  and  not
necessarily the lowest rate of interest charged by Bank.

     The undersigned  hereby authorizes Bank to charge the amount of all monthly
interest and principal  payments,  when due and payable  hereunder,  against the
loan  account of  Turbotec  Products,  Inc.  created  pursuant to an Amended and
Restated Loan and Security Agreement  (Accounts  Receivable and Inventory) dated
October 31, 1994, as amended (the "Agreement").

     At the option of the holder,  this note shall  become  immediately  due and
payable  without  notice or demand  upon the  occurrence  at any time of (i) the
failure to pay in full and when due any  installment  of  principal  or interest
hereunder;  (ii) one or more Events of Default as defined in the  Agreement;  or
(iii) the termination of the Agreement.

     Any deposits or other sums at any time  credited by or due from Bank to the
undersigned or any guarantor hereof, and any securities or other property of the
undersigned or any such guarantor, in the possession of Bank, may at any and all
times be held  and  treated  as  security  for the  payment  of the  liabilities
hereunder;  and Bank may apply or set off such  deposits or other  sums,  at any
time after the  occurrence of one or more Events of Default,  and without notice
to the  undersigned or to any such guarantor,  against any of such  liabilities,
whether or not the same have  matured,  and whether or not other  collateral  is
available to Bank.


<PAGE>


     The undersigned agrees to pay all costs of collection  including reasonable
fees of attorney.

     No delay or  omission  on the part of the  holder in  exercising  any right
hereunder  shall operate as a waiver of such right or of any other right of such
holder, nor shall any delay,  omission or waiver on any one occasion be deemed a
bar to or waiver of the same or any other  right on any future  occasion.  Every
one of the  undersigned  and every indorser or guarantor of this note regardless
of the time, order or place of signing waives presentment,  demand,  protest and
notices of every kind and assents to any one or more extensions or postponements
of the time of payment or any other indulgences, to any substitutions, exchanges
or  releases  of  collateral  if at any time  there be  available  to the holder
collateral  for this note, and to the additions or releases of any other parties
or persons primarily or secondarily liable.

     This  note  is  secured  pursuant  to the  terms  of the  Agreement,  and a
Supplementary  Security  Agreement - Goods and Chattels dated September 4, 1992,
executed by Turbotec  Products,  Inc., and is also secured pursuant to the terms
of a Security Agreement Inventory,  Accounts, Equipment and Other Property dated
September 4, 1992, and an Open-End  Mortgage Deed on property located at 651 Day
Hill Road, Windsor, Connecticut, executed by Thermodynetics, Inc.

     The undersigned shall be jointly and severally obligated hereunder.

     All rights and  obligations  hereunder  shall be governed by the law of the
Commonwealth of Massachusetts and this note shall be deemed to be under seal.


                                         Witness:
                                            

/s/                                         By: /s/                
- -------------------------                      -------------------------------

                                            THERMODYNETICS, INC.


/s/                                         By: /s/                
- -------------------------                      -------------------------------





                                                                  EXHIBIT 10(iv)

                                                                USTrust
                                                                USTrust Bank
                                                                30 Court Street
                                                                Boston, MA 02108


                                 October 3, 1997

Turbotec Products, Inc.
651 Day Hill Road
Windsor, Connecticut 05095
Attn:    Robert I. Lieberman, President

Gentlemen:

     Reference is made to our Amended and Restated  Loan and Security  Agreement
(Accounts  Receivable and Inventory)  dated October 31, 1994,  together with all
amendments  and  additions   thereto   (hereinafter   called  the  "Agreement").
Notwithstanding  the  provisions  of  the  Agreement,  it is  agreed,  effective
immediately, that the Agreement shall be amended as follows:

     Section 5.A of the  Agreement  is hereby  stricken in its  entirety and the
following new Section 5.A substituted therefor:

          "A.  Subject to the terms and provisions of this  Agreement,  the Bank
     hereby  establishes a discretionary  revolving line of credit in Borrower's
     favor in the amount set forth  below,  as  determined  by Bank from time to
     time hereafter. Bank may make such loans to Borrower, based upon such facts
     and circumstances existing at the time of the request, as from time to time
     Bank elects to make which are secured by Borrower's Inventory, Accounts and
     all  other  Collateral  and the  proceeds  thereof.  Without  limiting  the
     discretionary  nature of Bank's obligation to make loans hereunder,  or the
     demand feature of any loans that Bank does make hereunder,  Borrower agrees
     that the aggregate  unpaid  principal of all loans  outstanding  at any one
     time shall not exceed the Borrowing Base. The term "Borrowing Base" as used
     herein shall mean the sum of the following:

               (a) up to eighty  (80%)  percent  of the  unpaid  face  amount of
          Qualified Accounts (as defined below) or such other percentage thereof
          as may from time to time be fixed by the Bank upon notice to Borrower,
          PLUS

               (b) the lesser of (i) $650,000.00,  or (ii) up to (A) fifty (50%)
          percent  of the cost or  market  value,  whichever  is  lower,  of all
          Eligible  Inventory (as defined below) consisting of raw materials and
          twisted tubes,  plus (B) the lesser of (1)  $100,000.00,  or (2) fifty
          (50%) percent of the cost or market value,  whichever is lower, of all
          Eligible Inventory consisting of finished goods, MINUS

               (c) one  hundred  (100%)  percent of the  aggregate  amount  then
          undrawn on all  letters of credit and  acceptances  issued by the Bank
          for the


<PAGE>


          account of the  Borrower;  but in no event shall the sum of all direct
          loans plus the sum of the aggregate  amount  undrawn on all letters of
          credit and  acceptances  be in excess of  $1,800,000.00  (the  "Credit
          Limit")  or such  other  sum as may from  time to time be fixed by the
          Bank upon notice to Borrower.  All such loans shall bear  interest and
          at the  option of Bank  shall be  evidenced  by  demand  notes in form
          satisfactory   to  Bank,   but  in  the  absence  of  notes  shall  be
          conclusively  evidenced  by the  Bank's  record of  disbursements  and
          repayments and shall be payable ON DEMAND. Interest will be charged to
          Borrower at a  fluctuating  rate which is the daily  equivalent to the
          Base Lending  Rate in effect from time to time,  plus one (1%) percent
          per  annum or at such  other  rate  agreed on from time to time by the
          parties,  upon any balance  owing to Bank at the close of each day and
          shall be payable  monthly in arrears,  on the first day of each month,
          until the Bank makes demand;  PROVIDED THAT Bank at all times reserves
          the  right   exercisable  in  Bank's  sole   discretion,   based  upon
          circumstances  then  existing,  to  adjust  the  margin  over the Base
          Lending  Rate  payable by  Borrower  hereunder  upon  thirty (30) days
          notice to Borrower.  The rate of interest payable by Borrower shall be
          changed  effective  as of that  date in  which a  change  in the  Base
          Lending  Rate  becomes  effective.  Interest  shall be computed on the
          basis  of the  actual  number  of days  elapsed  over a year of  three
          hundred sixty (360) days.  The term "Base Lending Rate" as used herein
          and in any  supplement  and  amendment  hereto  shall mean the rate of
          interest  announced from time to time by Bank, at its head office,  as
          its  Base  Lending  Rate,  it being  understood  that  such  rate is a
          reference rate and not necessarily the lowest rate of interest charged
          by the Bank."

     Kindly note that the alterations  contained herein do not in any way alter,
release or change any other sections contained in the Agreement.

     Please  acknowledge your agreement to the foregoing by signing the enclosed
copy of this letter and returning the same to the undersigned.

                                            Very truly yours,

                                            USTRUST


                                            By:/s/  
                                               ---------------------------------
                                               D. Michael Murray, Vice President

UNDERSTOOD AND AGREED TO:

TURBOTEC PRODUCTS, INC.


By: /s/
    ---------------------------------------
    Robert I. Lieberman, President


                                      - 2 -


<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
This  schedule  contains  summary  financial   information  extracted  from  the
Company's  Form 10-KSB for the period  ended as stated below and is qualified in
its entirety by reference to such financial statements
</LEGEND>
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                            MAR-31-1998
<PERIOD-START>                               APR-01-1997
<PERIOD-END>                                 MAR-31-1998
<CASH>                                             2,023
<SECURITIES>                                           0
<RECEIVABLES>                                  1,039,078
<ALLOWANCES>                                           0
<INVENTORY>                                    1,448,420
<CURRENT-ASSETS>                               2,928,734
<PP&E>                                         8,963,252
<DEPRECIATION>                                 4,450,814
<TOTAL-ASSETS>                                 9,013,904
<CURRENT-LIABILITIES>                          1,353,313
<BONDS>                                                0
                                  0
                                            0
<COMMON>                                         125,696
<OTHER-SE>                                             0
<TOTAL-LIABILITY-AND-EQUITY>                   9,013,904
<SALES>                                        8,601,629
<TOTAL-REVENUES>                               8,601,629
<CGS>                                          6,371,482
<TOTAL-COSTS>                                  1,758,473
<OTHER-EXPENSES>                                 (9,608)
<LOSS-PROVISION>                                       0
<INTEREST-EXPENSE>                               368,532
<INCOME-PRETAX>                                  212,750
<INCOME-TAX>                                           0
<INCOME-CONTINUING>                              212,750
<DISCONTINUED>                                         0
<EXTRAORDINARY>                                        0
<CHANGES>                                              0
<NET-INCOME>                                     212,750
<EPS-PRIMARY>                                       0.02
<EPS-DILUTED>                                       0.01
                                               


</TABLE>


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