THERMODYNETICS INC
10KSB, 1999-06-30
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, 1999        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, Windsor, Connecticut    06095          (860) 683-2005
(Address of Principal Executive Offices) (Zip Code)  (Issuer's telephone number)

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 $10,445,117.

As of March 31,  1999 the  aggregate  market  value of the voting  stock held by
nonaffiliates of the Issuer was  approximately  $894,000 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, 1999
- -----                                      --------------------------------

Common Stock $.01 par value                    13,048,110 Common Shares

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


<PAGE>


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

                                     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 3


          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 in part  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, 1999,  three (3) customers each accounted for more than 10%
     of the Company's net sales, 47% in the aggregate. 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


<PAGE>


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


     accompanied  by an  impression  or print of a  spirally  fluted  tube is of
     material importance to its business.

          (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, 1999,  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,  1999,  the  Company  had 24  salaried
     employees and 59 employees compensated on an hourly basis.

          (13)  Working  Capital  Items - At March 31,  1999,  the Company had a
     positive working capital position of $320,140. See Item 6 herein.

     At March 31,  1999,  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 November,  1998 to a
maximum credit limit of $2,100,000; (d) a $333,330 term note, which was amended,
payable in fifty equal monthly installments of $6,667 through March 1, 2002; (e)
a $400,000  term note,  payable in sixty equal  monthly  installments  of $6,667
through  December,  2001;  and (f) a revolving  equipment  line of credit with a
maximum  credit  availability  of $300,000  for the  acquisition  of new or used
capital  equipment.  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  investments  in  two  other
corporations.  The revolving line of credit  provides for borrowings on a demand
basis against the line based on an inventory and accounts receivable  collateral
formula.  Other  notes  payable  consists of (g) a vehicle  note which  requires
monthly  installments  of principal and interest  totaling $1,129 and matures in
December,  2000,  and (h) the  balance of a  securities  margin  demand  loan of
$24,918. At March 31, 1999 the Company owed $1,513,443 under the $2,100,000 line
of credit and $147,763 under the equipment line of credit. See Item 2 herein.

     The Company's Baker Hollow facility is subject to (i) 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


<PAGE>


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


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.

     The Company has  contracted to build an addition to its facility at 651 Day
Hill Road  which is  anticipated  to be started  in June,  1999 with  completion
projected for November, 1999. The addition is to be constructed of a steel frame
structure  with  polystyrene  and stucco outer walls and will add 15,255  square
feet of  space  for  factory  use  and  general  amenities.  The  addition  will
substantially conform to the existing building materials and standards.  Parking
will be  increased by  approximately  40 spaces.  The addition  will also serve,
along  with the  original  facility,  as  collateral  for the  Company's  credit
facilities.

     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. This
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
approximately 12,000 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.  A lease  renewal  is  currently  being
negotiated.  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 Friday,  December
4, 1998. 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 and represent prices between dealers
and  do  not  include  retail  mark-up,  mark-down  or  commissions;  and do not
represent actual transactions.


<PAGE>


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



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

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

June 30 1998                  0.1525       0.105        0.17         0.12
September 30, 1998            0.15         0.10         0.165        0.11
December 31, 1998             0.15         0.09         0.155        0.105
March 31, 1999                0.13         0.10         0.15         0.11


     (b) At March 31, 1999, the number of holders of the Company's  Common Stock
was 2,463 (based upon the number of record holders).

     (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

     1999 Compared to 1998

Net sales for the year ended March 31, 1999 totaled $10,445,117,  representing a
new record  level for the Company and the first time annual  sales  exceeded the
$10 million  level.  The previous  record of  $8,699,341  was set in fiscal year
1997.  Sales for each  quarterly  period in 1999 were  higher  than those of the
corresponding  period  of the  prior  year.  Aggregate  sales  for  fiscal  1999
increased by $1,843,488 or 21% over fiscal 1998.

The 21% increase in sales over the prior year  continues the trend begun towards
the end of the 1997 fiscal year. Several factors are responsible for this growth
including  a return to more  seasonal  temperature  patterns  across  the United
States, increased demand from existing customers and the successful introduction
of new product applications for the Company's tubing product line.

The Company's core business of supplying  water source coaxial coils to OEM heat
pump  manufacturers  has  continued to grow as a result of both strong levels of
domestic  commercial and  residential  construction  and increased  market share
garnered by the Company's larger customers. Other established markets have shown
strong growth during the entire year, including swimming pool heat pumps, marine
applications and biomedical products.

Cost of sales  remained  constant  in  fiscal  1999,  at 74% of net  sales.  The
Company's cost structure has remained  relatively stable during recent years. As
the Company continues to make strides in implementing cellular manufacturing and
supply chain  techniques,  manufacturing  costs per unit are expected to reflect
the increased efficiencies.

Selling,  general and  administrative  expenses  increased by $199,038 in fiscal
1999  compared to 1998. As a percentage of net sales,  these  expenses  declined
from 20.4% of 1998  sales to 18.7% of net sales in the  current  year.  Staffing
additions  in  customer  service,  engineering  and  related  support  functions
accounted


<PAGE>



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


for most of the variance,  together with  compensation  and fringe  benefit cost
increases for other  employees.  Additions to  engineering  and  sales/marketing
departments are planned for the next twelve-month  period to further accommodate
the Company's growth pattern.

Interest expense  increased by approximately  $20,000 in fiscal 1999 compared to
the prior year.  Higher average  borrowings under the revolving line credit were
required  to  finance  additions  to  operating  assets  and added term debt was
incurred  during  the  year  resulting  from  investments  made  for  production
machinery and  equipment.  During 1999 the Company and its bank  negotiated  the
establishment  of a  separate  line of credit to finance  capital  improvements.
Previously,  these  expenditures  were financed from the working capital line of
credit and  subsequently  converted to term debt. This new structure is expected
to simplify the relationship.

Other  non-operating  expenses  totaled  $93,795 in the current year compared to
income of $9,608 in fiscal 1998. This difference of $103,403  primarily resulted
from losses  recognized on sales of  marketable  equity  securities  ($104,470),
liquidated  to finance an investment  in a foreign  company.  In August 1998 the
Company  invested  $100,000 in a Belgian  company  engaged in the  processing of
pharmaceutical  related products.  Other comprehensive loss for the current year
represents  the  unrealized  holding  loss on the unsold  portion of  marketable
equity securities from the prior year-end.

Income from  operations  for the current year was $725,958,  or 7% of net sales;
for 1998,  operating income totaled $471,674,  or 5% of net sales. Income before
income taxes  totaled  $243,752 in 1999  compared to $112,750 in fiscal 1998, an
increase of $131,002 or 116%.

The outlook for fiscal year 2000 is for  continued  sales growth in  established
markets,  complimented by new product applications  currently under development.
Expectations are for profitability improvements to mirror the increase in sales,
resulting in new record levels for both net sales and net income.

     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


<PAGE>



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


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.

Liquidity and Capital Resources

Working capital at March 31, 1999 was $320,140 compared to $443,505 at March 31,
1998. During the current year, current assets increased by $755,849, largely due
to increases in  inventories  required to support higher  production  levels and
accounts receivable from customers.  Current  liabilities  increased by $879,214
consisting  primarily of higher trade debt and additional  borrowings  under the
bank  lines of  credit.  These  advances  were used to  finance  the  additional
investments in operating assets and capital expenditures during the quarter.

Cash used in  investing  activities  decreased  from  $347,834 in fiscal 1998 to
$323,589 for the current year. In August 1998 the Company  completed a long-term
investment in a foreign company which was financed  through use of the Company's
investment  portfolio.   Capital  expenditures  financed  with  operating  funds
declined  from  $347,834 in 1998 to $263,119 in fiscal 1999.  During the current
year, a separate  line of credit was  established  to finance  these  additions.
Total levels of capital additions were comparable between the years.

Cash  provided by financing  activities  totaled  $216,571 for 1999  compared to
$61,209 in the prior year.  In 1998 the Company  refinanced  a large  portion of
term debt resulting in approximately  $100,000 of additional  principal payments
during  that  year.  During  1999 two  officer/directors  exercised  options  to
purchase common stock, generating net proceeds to the Company of $35,200.

During  fiscal  year  2000,  the  Company  plans  to  expand  the  manufacturing
production  space at its primary  facility.  The 15,000  square foot addition is
expected to be financed by the Company's existing bank with completion  targeted
for November 1999.

Inflation  and  other  cost  increases  continue  to  play a  minor  role in the
Company's  day to day  operations.  Stability  in the  precious  metals  markets
coupled with  improvements  in  manufacturing  processes  and


<PAGE>




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


procedures,  have  enabled  the  Company  to offset the  effects  of  inflation.
Continuing internal refinements are expected to generate similar cost reductions
during the coming year.

Certain  enhancements  and  upgrades  to the  Company's  information  processing
systems were  completed  in fiscal 1999.  As a result,  the  Company's  internal
systems are now believed to be year 2000  compliant.  Communications  with major
suppliers  and  customers   indicate  that  their  programs  in  this  area  are
progressing  and the Company does not  anticipate any problems  associated  with
year 2000 issues at this time.

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 10


                                    PART III

Item 9. Directors and Executive Officers of the Issuer

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

                                                                    Officer or
Name                    Age      Position                         Director Since
- ----                    ---      --------                         --------------

John F. Ferraro         65    Chairman of the Board                    1979
                              Chief Executive Officer and Secretary
Robert A. Lerman        64    President and Director                   1979
Anthony C. Mirabella    57    Director                                 1985
Robert I. Lieberman     45    Treasurer and Chief Financial Officer    1986

     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 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  to other  companies.  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
other companies.  In 1998, Mr. Lerman became a director of Initio, Inc., Tristar
Corporation, and Energy Brands, 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.  In
1998 Mr. Ferraro became a director of American  Interactive  Media,  Inc. and in
1999 he became a director of  America's  Shopping  Mall,  Inc.  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


<PAGE>



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


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 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 12


                                                      SUMMARY COMPENSATION TABLE

<TABLE>
<CAPTION>
                                                                                            Long Term Compensation
                                                                                -------------------------------------------------
                                                     Annual
                                                  Compensation                        Awards           Payouts         Other
                                            ----------------------------        -------------------------------------------------
                                                                                                                         Company
                                                                Other            Stock     Options/         LTIP          401(k)
Name/Position                 Fiscal Year   Salary/Bonus     Compensation        Awards     SARS           Payouts       Contrib.
- -------------                 -----------   ------------     ------------        ------     ----           -------       --------
<S>                              <C>        <C>                <C>                 <C>      <C>               <C>        <C>
John F. Ferraro (1)              1999       $173,151(2)         $4,125             $0       0 shs             $0           $499
Chairman of the Board,           1998       $149,029            $3,137             $0       0 shs             $0           $398
Secretary & Director             1997       $158,576(2)         $2,413             $0       0 shs             $0             $0

Robert A. Lerman(1)              1999       $173,151(2)         $3,137             $0       0 shs             $0         $1,073
President & Director             1998       $144,685            $3,450             $0       0 shs             $0           $776
                                 1997       $157,191(2)         $3,450             $0       0 shs             $0           $970

Robert I. Lieberman(3)           1999       $129,801           $14,228             $0       0 shs             $0             $0
Treasurer and CFO &              1998       $112,561           $15,330             $0       0 shs             $0             $0
President of Turbotec            1997       $108,775              $750             $0       0 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,  1999,  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,
     1999,  the  amount  receivable  for  premiums  paid  on  the  policies  was
     $1,243,234.  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 $6,500 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)  In 1997 and 1999 Messrs.  Ferraro and Lerman each  received cash bonuses of
     $17,500.

(3)  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.

     (b)  Remuneration  - For the fiscal year ending March 31, 2000, the Company
anticipates paying aggregate direct  remuneration (based on current salaries and
anticipated bonuses) of approximately $475,000 to all officers as a group (three
persons)  of which Mr.  Ferraro and Mr.  Lerman will each be paid  approximately
$175,000, Mr. Lieberman will be paid approximately $125,000.


<PAGE>


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


     (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, 1999 no 1992 Plan ISOs were  outstanding.  No options  under the
1992 Plan were granted in fiscal year ended March 31,  1999.  The 1992 Plan will
expire on December 31, 2001.

     (d) Aggregated Option/SAR Exercises and Fiscal Year End Option/SAR Values -
Options  were  exercised  by certain  executive  officers of the Company  during
fiscal year ended March 31, 1999. 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>         <C>            <C>
John F. Ferraro            320,000          $21,600           1,680,000   E           $113,400       E
Robert A. Lerman           320,000          $21,600           1,680,000   E           $113,400       E
Anthony C. Mirabella             0               $0              50,000   E             $3,375       E
Robert I. Lieberman              0               $0             150,000   E            $10,125       E
</TABLE>


     (e)  1990   Non-Qualified   Stock  Incentive  Plan  -  The  Company's  1990
Non-Qualified  Stock Incentive Plan ("1990 Plan") expired on January 1, 1999. No
stock  incentives were issued under the 1990 Plan in fiscal year ended March 31,
1999.

     (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.  There are 590,000
options  currently  reassignable  to members of the management  team pro rata in
accordance with their terms; the Company anticipates reassigning such options on
or before December 31, 1999. The expiration date of the options is September 30,
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.

<PAGE>


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


     Option  Grants in Last Fiscal  Year.  No options  were  granted in the last
fiscal year. However,  590,000 of the 1995 Options are currently reassignable to
members of the  management  team pro rata in  accordance  with their terms.  The
590,000  options are  anticipated  to be  reassigned  such that  268,182 will be
reassigned to Mr. Lerman, 268,182 will be reassigned to Mr. Ferraro, 20,114 will
be reassigned to Mr. Lieberman,  6,704 will be reassigned to Mr. Mirabella,  and
26,818 will be reassigned to two other individuals.  The anticipated  reassigned
options are not included in the Aggregated Exercises table above.

     (g)  Directors'  Fees - During  the  fiscal  year  ended  March  31,  1999,
directors'  fees of $4,000 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  $6,000 in directors' fees in the fiscal year ending
March 31, 2000.

     (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, 1999. 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, 1998,  Column (1), and for all years from  inception of the
Plan through Plan year ended December 31, 1998, Column (2).



<PAGE>


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


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

     Officers and Directors                         Column (1)     Column (2)
     ----------------------                         ----------     ----------
                                                                   (Aggregate)
<S>                                                   <C>            <C>
     John F. Ferraro(a)                               4,755          41,875
     Robert A. Lerman(a)                             10,217          59,468
     Robert I. Lieberman                                -0-          16,939
     Anthony C. Mirabella(a)                            -0-             -0-

     All officers and directors
     as a group(a) (4 persons)                       14,972         118,282

     Total Matching Contribution                    100,000         734,803
     to all employees (32 persons)
</TABLE>

- ----------

(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
the Chairman, the President, and the Treasurer is determined by their employment
contracts. See Footnotes (1) and (3) 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 (3) herein as to
the Company's  employment contracts with Messrs.  Ferraro,  Lerman and Lieberman
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 within the past three years, except
that a total of 640,000  shares of common stock were sold on January 12, 1999 to
two officers/directors of the Company through the exercise of a portion of their
respective  stock  options.  The options  have an  exercise  price of $0.055 per
share, and thus the aggregate purchase price was $35,200. The exemption from the
registration  requirements  of Section 5 of the Securities Act of 1933 which was
claimed was the issuance of  securities  not involving a public  offering  under
ss.4(2) of the Act.

Item 11. Security Ownership of Certain Beneficial Owners and Management

     The following  table sets forth,  as of June 14, 1999, 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 16


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

Directors and Officers

     John F. Ferraro                 3,729,854   shs (2)(6)         25.1%

     Robert A. Lerman                4,003,428   shs (2)(7)         27.0%

     Anthony C. Mirabella              210,086   shs(3)              1.6%

     Robert I. Lieberman               252,739   shs (4)             1.9%

     All officers and                8,196,107   shs (5)            49.1%
     directors as a group
     (four persons)

Other 5% Shareholders

     None

- ----------
(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 1,680,000 shares;  includes 41,875
     shares held for Mr.  Ferraro and 59,468 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 734,803 shares held in trust
     by the trustees of the 401(k) Plan for all of the participating  employees;
     includes  one-half of 166,121  shares held by a corporation  which is owned
     50% by Mr. Lerman and 50% by Mr. Ferraro.

(3)  Includes  options  exercisable  to  acquire  50,000  shares.  Excludes  the
     aggregate  734,803  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  3,560,000  shares;  includes an
     aggregate  118,282 shares held in trust under the Company's 401(k) Plan for
     each respective  officer's  account;  excludes the aggregate 734,803 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  certain  of  his  shares  of  Company  stock  in
     accordance  with the  guidelines  to the John F.  Ferraro  Defined  Benefit
     Pension  Plan and  Trust  which  was  established  in 1984;  the  aggregate
     holdings of Company  stock  owned by that  pension  plan  equals  1,370,000
     shares; 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 contributed certain of his shares of Company stock in accordance
     with the  guidelines to the Robert A. Lerman Money Purchase Plan and Trust,
     established in 1988;  the aggregate  holdings of Company stock now owned by
     that pension plan equals 1,291,880  shares;  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.

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, 1999, 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. The
Company's  transactions  with these  individuals and entities in the fiscal year
most recently ended are described below.

<PAGE>

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


     With Directors and Officers, and Related Persons. A total of 590,000 of the
1995 stock options are currently reassignable to the management team pro rata in
accordance with their terms; the Company anticipates reassigning such options on
or before December 31, 1999. See "1995 Stock Options" and "Option Grants in Last
Fiscal Year."

     In August 1998, the Company invested  $100,000 in a Belgian  pharmaceutical
company.  In October 1998 the Company  declined to increase its  investment.  In
December,  1998 the Company's three  directors,  Messrs.  Lerman,  Ferraro,  and
Mirabella, along with Kenneth B. Lerman, an attorney who provides legal services
to the Company and is the son of one of the directors,  each  participated  in a
further  investment on an individual  basis; such persons invested on terms less
favorable than that 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 endedMarch 31, 1999.

     (d) Indebtedness of Management - At March 31, 1999, 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, 1999 and March 31, 1998.

          Consolidated  Statements of Income and Comprehensive  Income - For The
          Years Ended March 31, 1999, 1998 and 1997.

          Consolidated  Statements of Stockholders' Equity - For The Years Ended
          March 31, 1999, 1998 and 1997.

          Consolidated  Statements of Cash Flows - For The Years Ended March 31,
          1999, 1998 and 1997.

          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)     November  13,  1998  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 18


            (10)(ii)    Line  of  Credit   Agreement  for  the   Acquisition  of
                        Equipment dated November 13, 1998.

            (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.

            (27)        Financial Data Schedule.


         Name                   State of Incorporation    Year of Incorporation
- --------------------------------------------------------------------------------

Turbotec Products, Inc.               Connecticut                 1978

National Energy Systems, Inc.         Connecticut                 1984

TPI Systems, Inc.                     Connecticut                 1983
================================================================================

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
                                 Signature Page


                                   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 28, 1999


     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 28, 1999                       Date: June 28, 1999




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

Date: June 28, 1999                        Date: June 28, 1999




<PAGE>

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

                              THERMODYNETICS, INC.
                                AND SUBSIDIARIES

                        CONSOLIDATED FINANCIAL STATEMENTS
                          AS OF MARCH 31, 1999 AND 1998






                                  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>




                                DiSanto Bertoline
                                        &
                                  Company, P.C.
                  CERTIFIED PUBLIC ACCOUNTANTS AND CONSULTANTS

                         628 Hebron Avenue, Building #3
                           Glastonbury, CT 06033-2496

                              Phone:  (860) 659-1338
                              Fax:    (860) 633-0712


                          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,  1999  and  1998,  and  the  related
consolidated  statements  of  income  and  comprehensive  income,  stockholders'
equity,  and cash flows for the years ended March 31, 1999, 1998 and 1997. 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,  1999 and  1998,  and the  results  of their
operations  and their cash flows for the years  ended March 31,  1999,  1998 and
1997 in conformity with generally accepted accounting principles.



                                           /s/ DiSanto Bertoline & Company, P.C.



Glastonbury, Connecticut
May 21, 1999


                                      -1-
<PAGE>



                      THERMODYNETICS, INC. AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS
                             MARCH 31, 1999 AND 1998



<TABLE>
<CAPTION>
                                                                                     1999              1998
                                                                                  -----------       -----------
<S>                                                                                <C>               <C>
                                     ASSETS
CURRENT ASSETS
    Cash                                                                           $    1,658        $    2,023
    Accounts receivable, net of allowance for doubtful
     accounts of $11,000 and $20,000 in 1999 and 1998, respectively                 1,259,524         1,039,078
    Inventories                                                                     1,957,097         1,448,420
    Prepaid expenses and other current assets                                         267,654           240,563
    Deferred income taxes                                                             100,000           100,000
                                                                                  -----------       -----------
            Total current assets                                                    3,585,933         2,830,084

PROPERTY, PLANT AND EQUIPMENT, net                                                  4,586,199         4,512,438

MARKETABLE EQUITY SECURITIES                                                          185,000           392,000

OTHER ASSETS                                                                        1,585,319         1,279,382
                                                                                  -----------       -----------
                                                                                   $9,942,451        $9,013,904
                                                                                  ===========       ===========

                      LIABILITIES AND STOCKHOLDERS' EQUITY

CURRENT LIABILITIES
    Demand note payable and current maturities of long-term debt                   $1,854,552        $1,353,313
    Accounts payable                                                                1,249,110           912,435
    Accrued expenses and taxes                                                        162,131           120,831
                                                                                  -----------       -----------
            Total current liabilities                                               3,265,793         2,386,579

LONG-TERM DEBT, less current maturities included above                              2,194,241         2,366,345

STOCKHOLDERS' EQUITY
    Common stock, par value $.01 per share; authorized 25,000,000
      shares, issued 13,305,008 shares and 12,569,646 shares in 1999
      and 1998, respectively                                                          133,050           125,696
    Additional paid-in capital                                                      5,444,855         5,411,524
    Deficit                                                                          (515,967)         (759,719)
    Accumulated other comprehensive income (loss)                                    (259,000)         (196,000)
                                                                                  -----------       -----------
                                                                                    4,802,938         4,581,501
    Less: treasury stock, at cost, 256,898 shares                                     320,521           320,521
                                                                                  -----------       -----------
                                                                                    4,482,417         4,260,980
                                                                                  -----------       -----------
                                                                                   $9,942,451        $9,013,904
                                                                                  ===========       ===========
</TABLE>



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


                                      -2-
<PAGE>

<TABLE>
<CAPTION>
                                                THERMODYNETICS, INC. AND SUBSIDIARIES
                                     CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME
                                          FOR THE YEARS ENDED MARCH 31, 1999, 1998 AND 1997



                                                                                1999                  1998                 1997
                                                                             ------------         ------------         ------------
<S>                                                                          <C>                  <C>                  <C>
NET SALES                                                                    $ 10,445,117         $  8,601,629         $  8,699,341

COST OF SALES                                                                   7,761,648            6,371,482            6,509,201
                                                                             ------------         ------------         ------------

            Gross profit                                                        2,683,469            2,230,147            2,190,140

SELLING, GENERAL AND ADMINISTRATIVE
  EXPENSES                                                                      1,957,511            1,758,473            1,586,983
                                                                             ------------         ------------         ------------

            Income from operations                                                725,958              471,674              603,157

OTHER INCOME (EXPENSE)
    Other, net                                                                    (93,795)               9,608              (31,495)
    Interest expense                                                             (388,411)            (368,532)            (323,166)
                                                                             ------------         ------------         ------------
                                                                                 (482,206)            (358,924)            (354,661)
                                                                             ------------         ------------         ------------
            Income before income taxes
              and extraordinary item                                              243,752              112,750              248,496

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

            Income before extraordinary item                                      243,752              212,750              295,496

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

            Net income                                                            243,752              212,750              368,227

OTHER COMPREHENSIVE INCOME (LOSS), net of tax
    Unrealized holding gains (losses) arising during period                      (167,470)                  --               49,000
    Add:  reclassification adjustment for losses included in
       net income                                                                 104,470                   --                   --
                                                                             ------------         ------------         ------------
            Other comprehensive income (loss), net of tax                         (63,000)                  --               49,000
                                                                             ------------         ------------         ------------

            Comprehensive income                                             $    180,752         $    212,750         $    417,227
                                                                             ============         ============         ============

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

EARNINGS PER COMMON SHARE - ASSUMING DILUTION
            Income before extraordinary item                                 $       0.02         $       0.01         $       0.02
            Extraordinary item                                                         --                   --                   --
                                                                             ------------         ------------         ------------
            Net income                                                       $       0.02         $       0.01         $       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, 1999, 1998 AND 1997



<TABLE>
<CAPTION>
                                          Common Stock                                       Treasury Stock
                                   ----------------------------                       ----------------------------
                                                                      Additional
                                    Number of                          Paid-in         Number of
                                     Shares            Amount          Capital          Shares           Amount
                                   -----------      -----------      -----------      -----------      -----------
<S>                                 <C>             <C>              <C>                  <C>          <C>
Balance, March 31, 1996             12,367,664      $   123,677      $ 5,401,559          256,898      $  (320,521)

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

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

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

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

Issuance of stock pursuant to
  401(k) plan                           95,362              954            4,531               --               --
Issuance of stock pursuant to
  incentive plan                       640,000            6,400           28,800               --               --
Comprehensive income                        --               --               --               --               --
                                   -----------      -----------      -----------      -----------      -----------

Balance, March 31, 1999             13,305,008      $   133,050      $ 5,444,855          256,898      $  (320,521)
                                   ===========      ===========      ===========      ===========      ===========


<CAPTION>

                                                         Accumulated
                                                            Other
                                                        Comprehensive
                                         Deficit        Income (Loss)         Total
                                       -----------       -----------       -----------
<S>                                    <C>               <C>               <C>
Balance, March 31, 1996                $(1,340,696)      $  (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                       368,227            49,000           417,227
                                       -----------       -----------       -----------

Balance, March 31, 1997                   (972,469)         (196,000)        4,039,808

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

Balance, March 31, 1998                   (759,719)         (196,000)        4,260,980

Issuance of stock pursuant to
  401(k) plan                                   --                --             5,485
Issuance of stock pursuant to
  incentive plan                                --                --            35,200
Comprehensive income                       243,752           (63,000)          180,752
                                       -----------       -----------       -----------

Balance, March 31, 1999                $  (515,967)      $  (259,000)      $ 4,482,417
                                       ===========       ===========       ===========




                                           The accompanying notes are an integral part of
                                              these consolidated financial statements.
</TABLE>



                                                                -4-
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                FOR THE YEARS ENDED MARCH 31, 1999, 1998 AND 1997



<TABLE>
<CAPTION>
                                                                1999            1998            1997
                                                              ---------       ---------       ---------
<S>                                                           <C>             <C>             <C>
CASH FLOWS FROM OPERATING ACTIVITIES
    Net income                                                $ 243,752       $ 212,750       $ 368,227
    Adjustments to reconcile net income to net
      cash provided by operating activities:
       Depreciation and amortization                            337,122         334,858         350,068
       Deferred tax benefit                                          --        (100,000)        (47,000)
       Compensation expense pursuant to stock
         incentive plan                                              --              --             550
       Gain on forgivness of debt                                    --              --        (126,266)
       Realized losses on marketable
         equity securities                                      104,470              --              --
       Changes in operating assets and liabilities:
         Increase (decrease) in accounts payable                336,675         153,521        (317,808)
         Increase in accrued expenses and taxes                  46,785           8,799             334
         (Increase) decrease in prepaid expenses and
           other current assets                                 (27,091)        (79,804)         18,886
         Increase in other assets                              (205,937)       (214,249)       (281,314)
         (Increase) decrease in accounts receivable            (220,446)        188,077         (22,443)
         (Increase) decrease in inventories                    (508,677)       (217,854)         86,092
                                                              ---------       ---------       ---------
               Net cash provided by operating activities        106,653         286,098          29,326
                                                              ---------       ---------       ---------

CASH FLOWS FROM INVESTING ACTIVITIES
    Proceeds from sale of marketable equity securities           39,530              --              --
    Purchase of investment                                     (100,000)             --              --
    Purchases of property, plant and equipment                 (263,119)       (347,834)       (319,378)
                                                              ---------       ---------       ---------
               Net cash used in investing activities           (323,589)       (347,834)       (319,378)
                                                              ---------       ---------       ---------

CASH FLOWS FROM FINANCING ACTIVITIES
    Proceeds from notes payable and long-term debt              472,614         460,949         588,677
    Proceeds from issuance of stock                              35,200              --              --
    Principal payments on debt obligations                     (291,243)       (399,740)       (298,604)
                                                              ---------       ---------       ---------
               Net cash provided by financing activities        216,571          61,209         290,073
                                                              ---------       ---------       ---------

NET (DECREASE) INCREASE IN CASH                                    (365)           (527)             21

CASH, beginning of year                                           2,023           2,550           2,529
                                                              ---------       ---------       ---------

CASH, end of year                                             $   1,658       $   2,023       $   2,550
                                                              =========       =========       =========
</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, 1999, 1998 AND 1997


NOTE 1 -  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

          CONSOLIDATION

          The  consolidated   financial   statements  include  the  accounts  of
          Thermodynetics,  Inc.,  and its  wholly-owned  subsidiaries,  Turbotec
          Products,  Inc., TPI Systems,  Inc. and National Energy Systems,  Inc.
          (the Company).  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  has  classified  its  marketable  equity  securities  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, 1999, 1998 AND 1997


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,
          plant 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, 1999 and 1998.

          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, 1999, 1998 AND 1997


NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

          EARNINGS PER COMMON SHARE

          In fiscal 1998, the Company 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)

          In fiscal 1998, the Company 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  year  financial
          statements have been  reclassified  to conform to the  requirements 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  maintains cash balances which, at times,  may
               exceed federal depository insurance limits. However, at March 31,
               1999 and 1998, all cash balances were fully insured.



                                      -8-
<PAGE>




                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                         MARCH 31, 1999, 1998 AND 1997


NOTE 2 -  FINANCIAL INSTRUMENTS (Continued)

          CONCENTRATIONS OF CREDIT RISK (Continued)

          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, 1999, 1998 and 1997 aggregated 47% (3 customers) 56% (3
               customers)  and  49% (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.

          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 advances have been made to related parties
               and have no scheduled repayment terms.

          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.



                                      -9-
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1999, 1998 AND 1997


NOTE 2 -  FINANCIAL INSTRUMENTS (Continued)

          FAIR VALUE OF FINANCIAL INSTRUMENTS (Continued

          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.

NOTE 3 -  INVENTORIES

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

                                          1999            1998
                                       ----------      ----------

               Raw materials           $1,085,891      $  910,993
               Work-in-process            318,750         299,895
               Finished goods             552,456         237,532
                                       ----------      ----------
                                       $1,957,097      $1,448,420
                                       ==========      ==========


NOTE 4 -  PROPERTY, PLANT AND EQUIPMENT

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

                                                     1999             1998
                                                  ----------       ----------

               Land                                $  204,484      $  204,484
               Buildings                            3,676,096       3,676,096
               Machinery and equipment              4,020,040       3,742,270
               Furniture and fixtures                 740,713         672,052
               Improvements                           713,524         668,350
                                                   ----------      ----------
                                                    9,354,857       8,963,252
               Less: accumulated depreciation       4,768,658       4,450,814
                                                   ----------      ----------
                                                   $4,586,199      $4,512,438
                                                   ==========      ==========

          Depreciation  expense totaled $325,182,  $318,586 and $316,072 for the
          years ended March 31, 1999, 1998 and 1997, respectively.




                                      -10-
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1999, 1998 AND 1997


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,
                       ------------------------------------------------------------------------------------------------------------
                                              1999                                                      1998
                       ----------------------------------------------------       -------------------------------------------------
                                       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    $ 444,000      $    --      $(259,000)      $ 185,000      $ 588,000      $  --      $(196,000)    $ 392,000
                       =========      =======      =========       =========      =========      =====      =========     =========
</TABLE>

          The Company  owns  37,000  shares of common  stock of a  developer  of
          cogeneration   projects  which  has  been   classified  as  noncurrent
          marketable  equity  securities.   As  of  March  31,  1999  and  1998,
          accumulated other  comprehensive  loss totaling $259,000 and $196,000,
          respectively, has been included in stockholders' equity to reflect the
          excess of the cost basis over market value.

          Realized losses on marketable equity securities of $104,470,  $-0- and
          $-0- are included in other income  (expense),  net for the years ended
          March 31,  1999,  1998 and  1997,  respectively,  in the  accompanying
          consolidated statements of income and comprehensive income.

NOTE 6 -  OTHER ASSETS

          Other assets consist of the following as of March 31:

<TABLE>
<CAPTION>
                                                                         1999            1998
                                                                      ----------      ----------
<S>                                                                   <C>             <C>
          Land contiguous to principal facility                       $  118,109      $  116,593
          Deferred assets                                                     --           5,125
          Intangible assets, net of accumulated amortization of
            $379,688 and $367,748 in 1999 and 1998, respectively         115,683         127,623
          Officers' life insurance premiums receivable, net            1,243,234       1,022,440
          Investment                                                     100,000              --
          Deposits                                                         8,293           7,601
                                                                      ----------      ----------
                                                                      $1,585,319      $1,279,382
                                                                      ==========      ==========
</TABLE>

          Amortization  expense  totaled  $11,940,  $16,272  and $19,296 for the
          years ended March 31, 1999, 1998 and 1997, respectively.


                                      -11-
<PAGE>



                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1999, 1998 AND 1997


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 $2,100,000. Interest
          is payable  monthly on amounts  outstanding at the bank's base lending
          rate plus 1.0% (8.5% at March 31,  1999).  Borrowings  outstanding  at
          March  31,  1999  and  1998   totaled   $1,513,443   and   $1,061,747,
          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>
                                                                1999            1998
                                                              ----------      ----------
<S>                                                           <C>             <C>
          Mortgage note payable - principal facility          $  758,328      $  845,832
          Mortgage note payable - multi-purpose building       1,044,353       1,066,530
          Term notes payable                                     684,082         708,326
          Other notes payable                                     48,587          37,223
                                                              ----------      ----------
                                                               2,535,350       2,657,911
          Less:  current maturities                              341,109         291,566
                                                              ----------      ----------
                                                              $2,194,241      $2,366,345
                                                              ==========      ==========
</TABLE>


          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% (8.5% at March 31,  1999),  maturing on December 1, 2002.
          The note is secured by substantially all of the assets of the Company.

          The Company has various  secured term notes from a bank which  require
          total monthly  principal  installments of $24,704 plus interest at the
          bank's lending rate plus 1% (8.5% at March 31, 1999), maturing through
          fiscal 2007. The notes are secured by substantially  all assets of the
          Company.

          Other notes payable  consists of a vehicle note which requires monthly
          installments of principal and interest  totaling $1,129 and matures in
          December,  2000, and a demand loan of $24,918 secured by the Company's
          investment in marketable equity securities.


                                      -12-
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1999, 1998 AND 1997


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 11) 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  for the year ended March
          31, 1997 resulting from debt forgiven upon refinancing.

          Maturities of long-term  debt for each of the years  succeeding  March
          31, 1999 are as follows:

                     Year ending March 31,
                        2000                      $  341,109
                        2001                         335,203
                        2002                         297,841
                        2003                         219,369
                        2004                         142,006
                        2005 and thereafter        1,199,822
                                                  -----------
                                                  $2,535,350
                                                  ==========

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,  1999,  no
          options or SARs had been granted under the 1990 Plan,  however a total
          of 304,500  shares have been awarded of which no shares were issued to
          employees and directors  during fiscal years 1999, 1998 and 1997. 1990
          Plan expired on January 1, 1999.

          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 1990 Plan. Through March 31, 1999, 140,000
          options had been granted under the 1992 ISO plan at an exercise  price
          of $.34 per share all of which have  expired  without  exercise  as of
          March 31, 1999.



                                      -13-
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1999, 1998 AND 1997


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, 1999,  650,000 shares
          have been issued as a result of the exercise of options,  resulting in
          a charge to  operations  of $-0- for the years ended  March 31,  1999,
          1998, and 1997, respectively.

          A summary of the status of the  Company's  three stock option plans as
          of March 31, 1999,  1998 and 1997 and changes  during the years ending
          on those dates is presented below:


<TABLE>
<CAPTION>
                                            1999                          1998                                  1997
                                    ----------------------     -------------------------------     ---------------------------------
                                   Outstanding     Price       Outstanding          Price          Outstanding            Price
                                   -----------    --------     -----------     ---------------     -----------       ---------------
<S>                                <C>             <C>         <C>             <C>                  <C>             <C>
Outstanding at beginning
  of year                          4,910,000       $.055       5,322,500       $   .055 to .39       5,435,000       $ .055 to .5625
Granted                                   --       $  --              --       $            --              --       $            --
Excercised                          (640,000)      $.055              --       $            --         (10,000)      $          .055
Canceled                                  --       $  --        (412,500)      $  .39 to .5313        (102,500)      $  .39 to .5313
                                   ---------                   ---------                            ----------
Outstanding at end of year         4,270,000       $.055       4,910,000       $  .055               5,322,500       $  .055 to .39
                                   =========                   =========                            ==========
</TABLE>


          Effective  April 1, 1996, the Company  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:

<TABLE>
<CAPTION>
                                                                             Year Ended March 31,
                                       ---------------------------------------------------------------------------------------------
                                                  1999                               1998                            1997
                                       ----------------------------      ----------------------------      -------------------------
                                       As Reported       Pro Forma       As Reported       Pro Forma       As Reported     Pro Forma
                                       -----------      -----------      -----------      -----------      -----------      --------
<S>                                    <C>              <C>              <C>              <C>              <C>              <C>
Income:
  Income before extraordinary
      item                             $   243,752      $   243,752      $   212,750      $   212,750      $   295,496      $187,806
    Extraordinary gain                          --               --               --               --           72,731        72,731
                                       -----------      -----------      -----------      -----------      -----------      --------
    Net income                         $   243,752      $   243,752      $   212,750      $   212,750      $   368,227      $260,537
                                       ===========      ===========      ===========      ===========      ===========      ========

  Income per common share:
    Income before extraordinary
      item                             $       .02      $       .02      $       .02      $       .02      $       .02      $    .02
    Extraordinary gain                          --               --               --               --              .01            --
                                       -----------      -----------      -----------      -----------      -----------      --------
    Net income                         $       .02      $       .02      $       .02      $       .02      $       .03      $    .02
                                       ===========      ===========      ===========      ===========      ===========      ========
</TABLE>




                                      -14-
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1999, 1998 AND 1997

NOTE 9 -  STOCKHOLDERS' EQUITY (Continued)

          STOCK OPTIONS (Continued)

          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

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  item" for the years ended March 31, 1999,  1998
          and 1997 is as follows:

<TABLE>
<CAPTION>

                                           1999                       1998                       1997
                                --------------------------  --------------------------  --------------------------
                                  Income        Shares        Income        Shares        Income        Shares
                                (Numerator)  (Denominator)  (Numerator)  (Denominator)  (Numerator)  (Denominator)
                                -----------  -------------  -----------  -------------  -----------  -------------
<S>                             <C>            <C>          <C>            <C>          <C>            <C>
Income before extraordinary
 item                           $   243,752                 $   212,750                 $   295,496
                                -----------                 -----------                 -----------

Basic EPS
 Income available to common
  stockholders                      243,752    12,789,127       212,750    12,550,159       295,496    12,444,721

Effect of Dilutive Securities
  Stock options                        --       2,714,192          --       3,131,014          --       3,722,297
                                -----------   -----------   -----------   -----------   -----------   -----------

Diluted EPS
Income available to common
  stockholders  including
  assumed  conversions          $   243,752    15,503,319   $   212,750    15,681,173   $   295,496    16,167,018
                                ===========   ===========   ===========   ===========   ===========   ===========
</TABLE>


                                      -15-
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1999, 1998 AND 1997


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  $49,833  $45,042 and $43,374 for the
          years  ended  March  31,  1999,  1998 and 1997,  respectively,  and is
          included  in  other  income   (expense),   net  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 $116,783, $120,115 and $97,628 for
          the years ended March 31, 1999, 1998 and 1997, respectively.

NOTE 13 - ADVERTISING

          The Company  expenses the  production  costs of  advertising  when the
          costs are incurred.  Advertising  expense charged to selling,  general
          and administrative  expenses totaled $29,603,  $35,189 and $28,829 for
          the years ended March 31, 1999, 1998, and 1997, respectively.

NOTE 14 - INCOME TAXES

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

                                1999            1998             1997
                              ---------       ---------       ---------
               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 1999,  1998 and 1997,  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, 1999, 1998 AND 1997


NOTE 14 - INCOME TAXES (Continued)

          The  provision  for income taxes  differs from the amount  computed by
          applying the  statutory  rate of 34% to income before income taxes for
          fiscal  years  1999,  1998 and 1997.  The  principal  reasons for this
          difference are listed in the following table:

                                                    1999       1998       1997
                                                   ------     ------     ------

          Statutory federal income tax               34%        34%        34%
          Insurance                                 (10)       (28)       (22)
          Amortization and other                      1         14         10
          Utilization of net operating loss
            carryforwards                           (16)       (80)        48
          Change in valuation allowance              (9)       (29)       (89)
                                                    ---        ---        ---
                                                     --%      (89)%      (19)%
                                                    ===        ===        ===

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

<TABLE>
<CAPTION>
                                              1999            1998            1997
                                             --------       ---------       ---------
<S>                                         <C>             <C>             <C>
          Net operating loss - federal      $  48,000       $(122,000)      $ 120,000
          Property and equipment, net          24,000          17,000         497,000
          Other                                 4,000           1,000              --
          Uniform capitalization               (2,000)          3,000          (3,000)
          Net operating loss - state          (29,000)         33,000          75,000
          Valuation allowance                 (45,000)        (32,000)       (736,000)
                                            ---------       ---------       ---------
                                            $      --       $(100,000)      $ (47,000)
                                            =========       =========       =========
</TABLE>

          The  components  of the net deferred tax accounts as of March 31, 1999
          and 1998 are as follows:

<TABLE>
<CAPTION>
                                                         1999             1998
                                                     -----------       -----------
<S>                                                  <C>               <C>
          Deferred tax assets:
            Net operating loss - federal             $   917,000       $   965,000
            Investment tax credits                       144,000           144,000
            Net operating loss - state                    47,000            18,000
            Uniform capitalization                        36,000            34,000
            Other                                         18,000            22,000
            Valuation allowance                         (100,000)         (145,000)
                                                     -----------       -----------
              Total deferred tax asset                 1,062,000         1,038,000

          Deferred tax liabilities:
            Property and equipment, net                 (962,000)         (938,000)
                                                     -----------       -----------
              Total deferred tax liability              (962,000)         (938,000)
                                                     -----------       -----------

             Net deferred tax asset (liability)      $   100,000       $   100,000
                                                     ===========       ===========
</TABLE>

                                      -17-
<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 1999, 1998 AND 1997


NOTE 14 - INCOME TAXES (Continued)

          The Company has $2,300,000 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, 1999 and
          expire in years ending March 31, 2000 and 2001.

          The Company  establishes a valuation  allowance 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 1999, the Company reduced the valuation allowance
          applied against the net operating loss  carryforwards by approximately
          $45,000 based upon reasonable and prudent tax planning  strategies and
          future income projections.

NOTE 15 - 401(k) PLAN

          The Company has a defined  contribution  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 Company's fiscal
          year.  Contributions for the years ended March 31, 1999, 1998 and 1997
          totaled $4,500, $5,485 and $8,422, respectively.

NOTE 16 - EMPLOYMENT CONTRACTS

          The Company has 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 $195,000 for
          the fiscal year ended  March 31,  1997,  $205,000  for the fiscal year
          ended March 31,  1998,  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 with 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, 1999, 1998 AND 1997


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, 1999, 1998 and 1997 is as follows:

<TABLE>
<CAPTION>
                                                                      Year Ended March 31,
                                                              1999             1998            1997
                                                           ----------       ----------      ----------
<S>                                                        <C>              <C>             <C>
          CASH PAID
          Interest                                         $  388,411       $  368,532      $  322,783
          Income taxes                                             --               --              --

          NON-CASH INVESTING AND FINANCING ACTIVITIES
          Long-term debt incurred to acquire
            property, plant and equipment                  $  147,764       $       --      $   45,858

          Investment purchased on margin                      100,000               --              --

          Issuance of stock pursuant to 401(k) plan             5,485            8,422           3,012

          Unrealized holding gain (loss) on long-term
            investment                                        (63,000)              --          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, 1999,  1998
          and 1997.


                                      -19-
<PAGE>


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

                     U.S. Securities and Exchange Commission




                                    EXHIBITS

                                       to

                                   Form 10-KSB

                                  Annual Report

                                    under the

                             Securities Act of 1934




                              Thermodynetics, Inc.
               (Exact name of registrant as specified in charter)


                         Commission File Number 0-10707



                      For Fiscal Year Ended March 31, 1999




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


<PAGE>



                              Thermodynetics, Inc.

                                Index to Exhibits

Exhibit
Number

(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)            November  13, 1998 letter  amendment  to Amended and Restated
                   Loan  and  Security   Agreement   (Accounts   Receivable  and
                   Inventory) originally dated October 31, 1994.

(10)(ii)           Line of Credit  Agreement  for the  Acquisition  of Equipment
                   dated November 13, 1998.

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

(22)               Subsidiaries - at Part IV, Item 14 of 10-KSB.

(27)               Financial Data Schedule.

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

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-KSB 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)


                                 Exhibit (10)(i)

USTrust Bank                                                             USTrust
30 Court Street
Boston, Massachusetts 02108
(617) 726-7000




                                                     November 13, 1998

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:

     1. 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)  $850,000.00,  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)  $200,000.00,  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 account of
     the Borrower;


<PAGE>

     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 $2,100,000.00  (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."

     2. The following new Section 21 is hereby added to the Agreement:

          "21. YEAR 2000 COMPLIANT.

          (a) Borrower agrees,  represents and warrants that it will become Year
     2000  Compliant by ensuring,  on a timely basis,  that all of the products,
     systems and services  material to its business will be able to properly and
     accurately perform date-sensitive  functions for all dates before and after
     January 1, 2000.  Borrower will adopt a realistic,  adequately  staffed and
     funded  comprehensive  Year 2000 plan and will disclose to Bank the details
     of that  plan,  and  provide  to Bank  updates  on  that  plan's  progress,
     including any assessment provided by third parties.  Borrower will also use
     due  diligence  to  ensure  that  each of its key  suppliers,  vendors  and
     customers will, on a timely basis, be Year 2000 Compliant.

          (b) Borrower also agrees,  represents and warrants that it will inform
     Bank  promptly of any failure by it to  successfully  implement its plan to
     become Year 2000  Compliant,  or of its inability to dedicate the resources
     required  to be Year  2000  Compliant  on a timely  basis.  In  particular,
     Borrower will promptly inform Bank of any occurrence,  event,  circumstance
     or condition impacting the implementation of its Year 2000 plan that has or
     could  reasonably  be  expected  to  have  a  material  adverse  impact  on
     Borrower's  business,  operations,  prospects  or  condition,  financial or
     otherwise.

          (c) Borrower also  acknowledges  and understands that failure by it to
     perform any of the  warranties,  representations  or covenants set forth in
     this section, or the occurrence or existence of any event,  circumstance or
     condition  described  in  the  foregoing  paragraph,   may  constitute  the
     occurrence of an Event of Default under this Agreement.  Upon such Event of
     Default,  Bank would be entitled,  among other  things,  to suspend  future
     borrowings or other  extensions  of credit and require  repayment of all of
     Borrower's obligations to Bank thereunder.


                                      -2-
<PAGE>

          (c) To the extent of any  inconsistency  between  this section and any
     other  provisions  of this  Agreement,  the  terms  of this  section  shall
     control."

     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:____________________________________
                                    James H. Herzog, Jr., Vice President

UNDERSTOOD AND AGREED TO:

TURBOTEC PRODUCTS, INC.


By:_______________________________
   Robert I. Lieberman, President


                                      -3-





                                Exhibit (10)(ii)
USTrust Bank                                                             USTrust
30 Court Street
Boston, Massachusetts 02108
(617) 726-7000




                            LINE OF CREDIT AGREEMENT
                        FOR THE ACQUISITION OF EQUIPMENT



                                                       November 13, 1998


Thermodynetics, Inc.
651 Day Hill Road
Windsor, Connecticut 05095
Attn:    Robert I. Lieberman, Treasurer

Gentlemen:

     We (hereinafter "Bank") are pleased to advise you (hereinafter  referred to
as the  "Borrower")  that Bank has  established  a line of credit of up to Three
Hundred  Thousand  ($300,000.00)  Dollars  (hereinafter  the "Credit Limit") for
Borrower  to be used  exclusively  for the  purchase  of new or used  equipment;
subject to Bank's  periodic  review.  This line of credit will be subject to the
following terms and conditions:

     1. Any advances,  extensions of credit,  or loan of funds  pursuant to this
line of credit  (hereinafter  collectively  and  separately  referred  to as the
"Loan")  will be made only if in the  opinion of Bank there has been no material
adverse change of  circumstances  and if there exists no Event(s) of Default (as
hereinafter defined). No advances, extensions of credit or loan of funds will be
made on or  after  July  31,  1999.  Any  sums  repaid  hereunder  shall  not be
readvanced.

     2.  Borrower  may  draw  upon  this  line of  credit  from  time to time by
presenting  to Bank for each  Loan:  (i) an  invoice  from  the  vendor  of such
equipment in a form  reasonably  acceptable  to Bank,  which  includes,  without
limitation,  the purchase  price of such  equipment,  including  all  accessions
thereto,  net of all  discounts,  rebates,  and  other  dealer  or  manufacturer
incentives;  (ii) a certificate of origin,  bill of sale, or other documentation
satisfactory to Bank indicating  whether the equipment being purchased is new or
used equipment (hereinafter referred to as the "Equipment  Documentation");  and
(iii) an Equipment Documentation  Certification in the form of Exhibit A annexed
hereto. Draws under this Line of Credit Agreement must be equal to or exceed the
sum of Fifty Thousand ($50,000.00) Dollars.


<PAGE>

     3.  Interest  will be  charged  to  Borrower  at a rate  which is the daily
equivalent  to the Base Lending Rate in effect from time to time,  plus one (1%)
percent per annum, or such other rate as Bank and Borrower may from time to time
agree to, upon any balance  owing to Bank at the close of each day.  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. Such interest shall be payable monthly in arrears on the first
(1st) day of each month,  commencing on the first of such dates next  succeeding
the date hereof. Upon the occurrence of an Event of Default hereunder,  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.

     4. The  aggregate  principal  amount  of any Loan made  hereunder  shall be
payable in forty-eight  (48) successive equal monthly  installments  over a term
that  begins  on the first  day of the  first  month  which is more than six (6)
months from the date of such Loan with the proviso  that all Loans shall  become
due and  payable  upon the  termination  of an  Amended  and  Restated  Loan and
Security Agreement  (Accounts  Receivable and Inventory) dated October 31, 1994,
as amended, between Bank and Turbotec Products, Inc. (the "Loan Agreement").

     5. The Loan may, but need not, be  evidenced by notes in a form  reasonably
satisfactory  to Bank,  but in the  absence  of  notes,  shall  be  conclusively
evidenced by Bank's records of disbursements.  The Loan,  together with interest
thereon,  is secured by all  collateral at any time granted to Bank by Borrower,
or any guarantor of Borrower to secure any  obligations of Borrower to Bank, and
includes,  without  limitation,  that  certain  Security  Agreement,  Inventory,
Accounts,  Equipment and Other  Property  dated  September 4, 1992,  executed by
Borrower in favor of Bank (the "Security Agreement").

     6. The  aggregate  principal  amount of any Loan made against any Equipment
Documentation  shall not exceed the  lesser of (i) the  Credit  Limit,  less any
previous Loan, or (ii) eighty (80%) percent of the net purchase price (exclusive
of any soft costs,  transportation  or  installation  charges) of the  equipment
referred to therein.

     7.  Borrower  will  pay or  reimburse  Bank  for all  reasonable  expenses,
including  reasonable  attorneys'  fees,  which  Bank  may in any way  incur  in
connection with this agreement or any other agreement  between Borrower and Bank
or with any Loan or which  result  from any claim or action by any third  person
against  Bank  which  would  not  have  been  asserted  were it not  for  Bank's
relationship with Borrower hereunder or otherwise.

     8.  Upon  the  occurrence  of any  one or  more  of  the  following  events
(hereinafter  "Events of Default"),  any and all obligations of Borrower to Bank
shall  become  immediately  due and  payable,  at the option of Bank and without
notice or demand:


                                      -2-
<PAGE>

          (a) The failure by Borrower to pay when due any principal, interest or
     other amounts due under this Line of Credit Agreement.

          (b) The  termination  of the Loan  Agreement or the  occurrence  of an
     Event of Default as  described  in the Loan  Agreement  or in the  Security
     Agreement.

          (c) The occurrence of any such Event of Default shall also constitute,
     without notice or demand, a default under all other agreements between Bank
     and Borrower  and  instruments  and papers given Bank by Borrower,  whether
     such agreements, instruments, or papers now exist or hereafter arise.

     9. Borrower agrees that notwithstanding anything contained herein, the Loan
Agreement or otherwise, if Turbotec Products, Inc. shall pay off all amounts due
under the Loan Agreement and shall release Bank from its obligation,  if any, to
make advances  under the Loan Agreement or any successor  agreement,  Bank shall
have the right to terminate this line of credit and demand the immediate payment
of the balance due under this Line of Credit Agreement and any secured term note
issued pursuant to this Line of Credit Agreement.

     10.  The  execution,  delivery  and  performance  of this  Line  of  Credit
Agreement,  any note or any other instrument or document at any time required in
respect hereof or of the Loan are within the corporate  powers of Borrower,  and
not, to the best of Borrower's knowledge,  in contravention of law, the Articles
of  Organization  or By-Laws of Borrower  or any  amendment  thereof,  or of any
indenture,  agreement  or  undertaking  to  which  Borrower  is a  party  or may
otherwise be bound, and each such instrument and document represents a valid and
binding obligation of Borrower and is fully enforceable  according to its terms.
Borrower will, concurrently with the execution of this Line of Credit Agreement,
furnish Bank with the opinion of counsel for Borrower with respect to any or all
of the  foregoing or other  matters,  such  opinion to be in substance  and form
reasonably satisfactory to Bank.

     11. This Line of Credit  Agreement is supplementary to each and every other
agreement between Borrower and Bank and shall not be so construed as to limit or
otherwise  derogate  from any of the  rights or  remedies  of Bank or any of the
liabilities,  obligations or  undertakings of Borrower under any such agreement,
nor shall any contemporaneous or subsequent  agreement between Borrower and Bank
be construed to limit or otherwise  derogate  from any of the rights or remedies
of Bank or any of the  liabilities,  obligations  or  undertakings  of  Borrower
hereunder unless such other agreement specifically refers to this Line of Credit
Agreement and expressly so provides.

     12. This Line of Credit  Agreement and the covenants and agreements  herein
contained  shall  continue in full force and effect and shall be applicable  not
only in respect of the Loan, but also to all other obligations,  liabilities and
undertakings  of  Borrower  to Bank  whether  direct or  indirect,  absolute  or
contingent, due or to become due, now existing or hereafter arising or acquired,
until  all such  obligations,  liabilities  and  undertakings  have been paid or
otherwise  satisfied  in  full.  No  delay  or  omission  on the part of Bank in
exercising  any right  hereunder  shall operate as a waiver of such right or any
other right and waiver on any one or more occasions  shall not be construed as a
bar to or waiver of any right or  remedy of Bank on any  future  occasion.  This
Line of Credit  Agreement  is intended  to take  effect as a sealed  instrument,
shall


                                      -3-
<PAGE>

be  governed  by and  construed  according  to the laws of the  Commonwealth  of
Massachusetts, shall be binding upon Borrower's successors and assigns and shall
inure to the benefit of Bank's successors and assigns.

     13.  THE  BORROWER  AND  BANK  EACH  HEREBY   KNOWINGLY,   VOLUNTARILY  AND
INTENTIONALLY  WAIVES  ANY RIGHT THEY MAY HAVE OR  HEREAFTER  HAVE TO A TRIAL BY
JURY IN RESPECT OF ANY SUIT, ACTION OR PROCEEDING  ARISING OUT OF OR RELATING TO
THIS LINE OF CREDIT  AGREEMENT.  The Borrower hereby certifies that neither Bank
nor any of its representatives,  agents or counsel has represented, expressly or
otherwise,  that  Bank  would  not,  in the  event of any such  suit,  action or
proceeding,  seek to enforce this waiver of right to trial by jury. The Borrower
acknowledges  that it has read the  provisions of this Line of Credit  Agreement
and in particular,  this Section;  has consulted legal counsel;  understands the
right it is  granting  in this Line of Credit  Agreement  and is waiving in this
Section in particular;  and makes the above waiver  knowingly,  voluntarily  and
intentionally.

     14. The Borrower and Bank agree that any action or proceeding to enforce or
arising out of this Line of Credit  Agreement  may be  commenced in any court of
the  Commonwealth  of  Massachusetts  sitting  in the  counties  of  Suffolk  or
Middlesex,  or in the  District  Court of the United  States for the District of
Massachusetts,  and the Borrower waives  personal  service of process and agrees
that a summons and  complaint  commencing  an action or  proceeding  in any such
court shall be properly  served and confer  personal  jurisdiction  if served by
registered or certified  mail to the Borrower,  or as otherwise  provided by the
laws of the Commonwealth of Massachusetts or the United States of America.

                                      Very truly yours,

                                      USTRUST


                                      By:____________________________________
                                       James H. Herzog, Jr., Vice President

UNDERSTOOD AND AGREED TO:

THERMODYNETICS, INC.


By:_______________________________
   Robert I. Lieberman, Treasurer


                                      -4-
<PAGE>


                                    EXHIBIT A

                      EQUIPMENT DOCUMENTATION CERTIFICATION


     The  undersigned,  the  __________________  of  Thermodynetics,  Inc.  (the
"Borrower"), hereby certifies to USTrust that:

     1.   The  attached  copy of the  Equipment  Documentation  (as  defined  in
          Paragraph  2 of the  Borrower's  Line  of  Credit  Agreement  for  the
          Acquisition  of Equipment  dated  November  _____,  1998),  is a true,
          correct and complete copy of the Equipment Documentation;

     2.   The net purchase  price  (exclusive of soft cost,  transportation  and
          installation  charges) of the  equipment  referred to in the  attached
          Equipment Documentation is in the amount of $________________;

     3.   The  soft  cost,   transportation  and  installation  charges  of  the
          equipment  referred to in the attached  Equipment  Documentation is in
          the amount of $______________;

     4.   The total purchase price of the equipment  referred to in the attached
          Equipment  Documentation  (the net purchase price, plus the soft cost,
          transportation   and  installation   charges)  is  in  the  amount  of
          $___________; and

     5.   The  aggregate  principal  amount of the Loan  requested in connection
          with the attached  Equipment  Documentation does not exceed the lesser
          of (i) the Credit Limit,  less any previous Loan, or (ii) eighty (80%)
          percent of the net purchase price of the equipment set forth in Item 2
          above.

     Capitalized  terms not  otherwise  defined  herein  shall have the meanings
assigned to them in Borrower's  Line of Credit  Agreement for the Acquisition of
Equipment dated November ___, 1998.

     _________________________________________
                                    Name:
                                   Title:


Date:  ______________, 199__


<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>
<CIK>                         0000351902
<NAME>                        Thermodynetics, Inc.

<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                                     MAR-31-1999
<PERIOD-START>                                        APR-01-1998
<PERIOD-END>                                          MAR-31-1999
<CASH>                                                      1,658
<SECURITIES>                                              185,000
<RECEIVABLES>                                           1,259,524
<ALLOWANCES>                                                    0
<INVENTORY>                                             1,957,097
<CURRENT-ASSETS>                                        3,585,933
<PP&E>                                                  9,354,857
<DEPRECIATION>                                          4,768,658
<TOTAL-ASSETS>                                          9,942,451
<CURRENT-LIABILITIES>                                   3,265,793
<BONDS>                                                         0
                                           0
                                                     0
<COMMON>                                                  133,050
<OTHER-SE>                                              4,349,367
<TOTAL-LIABILITY-AND-EQUITY>                            9,942,451
<SALES>                                                10,445,117
<TOTAL-REVENUES>                                       10,445,117
<CGS>                                                   7,761,648
<TOTAL-COSTS>                                           1,957,511
<OTHER-EXPENSES>                                           93,795
<LOSS-PROVISION>                                                0
<INTEREST-EXPENSE>                                        388,411
<INCOME-PRETAX>                                           243,752
<INCOME-TAX>                                                    0
<INCOME-CONTINUING>                                       243,752
<DISCONTINUED>                                                  0
<EXTRAORDINARY>                                                 0
<CHANGES>                                                       0
<NET-INCOME>                                              243,752
<EPS-BASIC>                                                 .02
<EPS-DILUTED>                                                 .02



</TABLE>


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