THERMODYNETICS INC
10KSB, 2000-06-29
MISCELLANEOUS FABRICATED METAL PRODUCTS
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                     U.S. SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 10-KSB

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

For the fiscal year ended March 31, 2000          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 $10,731,636.

As of March 31,  2000 the  aggregate  market  value of the voting  stock held by
non-affiliates of the Issuer was  approximately  $2,985,000 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, 2000
-----                                           --------------------------------
Common Stock $.01 par value                             13,448,110 Common Shares

Transitional Small Business Disclosure Format        Yes [___]  No [_X_]

<PAGE>


                                     PART I

Item 1.   Description of Business

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

     (b) Business of Issuer

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

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

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

     The  Company's  products are designed  for specific  customer  requirements
taking into  account  such  variables  as  allowable  temperature  and  pressure
differentials,  the nature of the  fluids to be used  (liquids  or  gases),  the
required flow rates and the  operational  and  environmental  conditions.  These
factors are  considered  to determine the type,  length,  diameter and degree of
enhancement  of the metal  tubing to be used  (usually  copper,  copper  nickel,
aluminum,  carbon  steel  or  stainless  steel  although  other  metals  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.

     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

<PAGE>


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


fabrication functions.  The Company believes its manufacturing  capabilities are
adequate for it to manufacture and ship up to approximately $18 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
     department which,  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  in  commercial,  industrial  and  residential
     buildings and structures.

     (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  from 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,  strikes or other
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,  2000,  four (4)  customers  each  accounted  for more than 10% of the
Company's  net sales,  54% 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 accompanied by an impression or print of
a spirally fluted tube is of material importance to its business.

     (8) Governmental Approval - N/A

<PAGE>


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


     (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,
2000,  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, 2000,  the Company had 24 salaried  employees
and 55 employees compensated on an hourly basis.

     (13) Working  Capital Items - At March 31, 2000, the Company had a negative
working capital position of $150,556. See Item 6 herein.

     At March 31,  2000,  the  Company's  credit  facilities  consisted of (a) a
$460,000 term note payable in sixty equal monthly installments of $7,667 through
December 1, 2002;  (b) a revolving line of credit with a maximum credit limit of
$2,100,000;  (c) a $333,330 term note, which was amended, payable in fifty equal
monthly  installments of $6,667 through March 1, 2002; (d) a $400,000 term note,
payable in sixty equal monthly  installments of $6,667 through  December,  2001;
(e) a $297,568 term note,  payable in forty-eight  equal  installments of $6,199
through January,  2004; (f) a revolving  equipment line of credit with a maximum
credit  availability of $300,000 for the acquisition of capital  equipment;  and
(g) a $1,750,000 permanent term note payable in sixty equal monthly installments
of $7,292 through  December 1, 2004; such loan was converted from a construction
loan into a permanent loan and had been used to finance the  construction  of an
addition to the Company's Day Hill facility.  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,
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.  At March 31, 2000 the Company owed  $1,525,319
under the $2,100,000 line of credit. See Item 2 herein.

     The  Company's  Baker Hollow  facility is subject to 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  $1,750,000  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 Baker Hollow 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 55,000 square foot one story building constructed in 1981 with
an addition constructed in 2000 on a six acre site located at 651 Day Hill Road,
Windsor,  Connecticut.  The Day Hill  facility is a steel frame  structure  with
polystyrene and stucco outer walls, has parking for  approximately  115 cars and
contains  approximately  45,000 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  completed  an addition to the Day Hill  facility in 2000.  The
addition is a steel frame  structure  with  polystyrene  and stucco  outer walls
providing for 15,255 square feet of space for factory use and general amenities.

<PAGE>


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


     Through  March 2000 the  Company  conducted  certain  of its  manufacturing
operations in a light industrial  multi-purpose  facility on  approximately  3.5
acres located at 50 Baker Hollow Road, Windsor,  Connecticut,  contiguous to the
Day  Hill  site.  The  Baker  Hollow  facility  was  constructed  in 1991 and is
comprised of a steel frame structure with concrete block and stucco outer walls,
has parking for approximately 95 cars and contains  approximately  28,600 square
feet of  factory  space.  The  Company  also  owns  3.5  acres  of  unencumbered
undeveloped  land  adjacent  to the Baker  Hollow  facility.  The  Baker  Hollow
facility serves as collateral for a ten year mortgage.  The Company is currently
leasing the  remaining  approximately  11,500  square  feet of the Baker  Hollow
facility to an unaffiliated third party with an annual rental of $51,750, triple
net; that lease will expire in July,  2000. 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 Thursday,  January
13, 2000.  At said  meeting,  John F.  Ferraro,  Robert A. Lerman and Anthony C.
Mirabella  were  elected to serve as  directors  of the  Company  until the next
annual  meeting of  stockholders  and until  their  successors  are  elected and
qualified. Said directors were elected by the following votes:

Nominee                       Number of Votes For     Number of Votes Withheld
-------                       -------------------     ------------------------
John F. Ferraro                    9,295,700                  142,700
Robert A. Lerman                   9,294,900                  143,500
Anthony C. Mirabella               9,300,100                  138,300


                                     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.

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

June 30, 1999                $0.11       $0.10               $0.12       $0.11
September 30, 1999            0.13        0.11                0.145       0.12
December 31, 1999             0.14        0.10                0.145       0.11
March 31, 2000                0.57        0.105               0.60        0.12

<PAGE>


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


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, 2000, the number of holders of the Company's  Common Stock
was 2,540 (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 or Plan of Operations

Results of Operations

     2000 Compared to 1999

     Net sales for the year  ended  March 31,  2000  again set a new  record for
product  shipments in a twelve-month  period.  For the second  consecutive  year
sales exceeded $10 million,  finishing at  $10,731,636,  an increase of $286,519
over the prior year total.

     The increase in sales is  attributable  to the net effect of many  factors,
certain of which independently affected different applications for the Company's
products.  The residential water source heat pump market was adversely  impacted
by the  elimination  of utility  company rebate  incentives for geothermal  heat
pumps.  New home  construction  in general  suffered as mortgage  interest rates
climbed  during the year in part as a response to rate  increases by the Federal
Reserve Board.  Consequently,  the growth  experienced in this market during the
early stages of fiscal year 2000 was  significantly  tempered  during the second
and third fiscal  quarters,  with a rebound over the balance of the fiscal year.
Commercial  applications  for water source heat pumps followed a similar pattern
although the variations between quarters were not as notable.

     The  swimming  pool heat pump  market,  marine  applications,  food service
equipment applications and biomedical products all exhibited strong performances
during the current year.  New customers  have been added in many of these areas,
supplementing  the existing sales base,  fueling  penetration in these important
markets.

     Cost of sales  increased  from 74% of net sales in fiscal  1999 and 1998 to
76% of net sales for the current  year.  The  average  cost of copper and copper
based alloys increased steadily during the year,  together with mill fabrication
charges for conversion of base  materials  into tubing used in heat  exchangers.
Direct and indirect labor costs have  continued to rise  reflecting the regional
trend of smaller pools from which to draw additional employees.  The Company has
also added  personnel in  manufacturing  support  positions to identify  process
improvements and other cost reduction techniques.

     Selling,   general  and  administrative  expenses  increased  slightly  but
remained  flat at 19% of net sales for both fiscal 1999 and 2000.  Headcount  in
these  areas  also  increased  from  staff  additions  to sales and  engineering
departments.  Cost  reductions in certain  employee  related  expenses served to
offset a portion of the increase in payroll costs.

     The decrease in interest expense from fiscal 1999 to fiscal 2000 was due to
the  capitalization  of  certain  charges  relating  to the  construction  of an
addition to the  Company's  manufacturing  facility.  Interest  costs charged to
operations  are  expected to  increase in the coming year as the new  production
area has been completed and integrated into the manufacturing workflow.

     Other non-operating  expenses were adversely impacted in fiscal 1999 by the
sales of  marketable  equity  securities  liquidated to finance  another  equity
investment. No sales of non-operating assets occurred in the current

<PAGE>


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


year. Other comprehensive  losses continued to be recorded on unrealized holding
losses of remaining marketable equity securities held by the Company.

     Income  before  income taxes  increased  from $243,752 in the prior year to
$274,593 in fiscal 2000.  The  reductions in operating  income and other expense
from  fiscal  1999  resulted  in a net  improvement  in  pre-tax  earnings.  The
provision for income taxes in the current year  represents the  recognition of a
deferred liability for federal taxes.  Timing differences of expense recognition
for financial reporting and tax calculations  require the Company to reflect the
deferred expense in the current year. In fiscal 1999 these differences  resulted
in a net deferred tax asset, therefore no provision was required at year-end.

     The  outlook  for  fiscal  year  2001  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 record  levels for both net sales and pre-tax
income.

     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 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 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

<PAGE>


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


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%.

Liquidity and Capital Resources

     Working  capital at March 31,  2000 was a  negative  $150,556  compared  to
$320,140 at March 31, 1999. During the current year, current assets decreased by
$294,688  largely due to decreases in inventories and the reversal of a deferred
tax asset into a long-term liability during fiscal 2000.  Inventories  decreased
by  approximately  8% from the prior year as the  Company  placed an emphasis in
reducing raw material and work in process levels.  Current liabilities increased
by $176,008 consisting primarily of higher trade debt and additional  borrowings
under the bank line of credit and construction debt. These advances were used to
finance the additional  investments in operating assets and capital expenditures
during the year.

     Cash used in investing activities increased from $323,589 in fiscal 1999 to
$419,276 for the current year, primarily as a result of higher levels of capital
additions  in  fiscal  year  2000.  As  additional  manufacturing  space  became
available,  production  lines were reorganized and machinery and equipment added
to better utilize the floor area.

     Cash used by  financing  activities  totaled  $312,962 in the current  year
compared to cash  provided  of  $216,571  in the prior year.  In fiscal 1999 the
Company  significantly  increased  drawdowns on both its revolving and equipment
lines of credit to finance operating expenses and capital  additions.  Drawdowns
on these lines were minimal in 2000 as  construction  activities  were  financed
through  term debt  converted  to a  mortgage  in March  2000,  while  principal
payments on pre-existing term debt aggregated $332,588 during the year.

     Inflation and other cost  increases  have begun to play a more  significant
role in the Company's day to day  operations as  competitive  pricing  pressures
have  restricted  the Company's  ability to fully recover these added  expenses.
Improvements in manufacturing processes and procedures, have enabled the Company
to  offset a  portion  of the  effects  of  inflation  and  continuing  internal
refinements are expected to generate  further cost reductions  during the coming
year. Tightening of the labor markets for skilled and semi-skilled  employees is
expected  to  continue  for the  foreseeable  future,  although  the  impact  on
personnel related costs are unknown at this time.  Further increases in interest
rates charged by financial  institutions  will impact both the Company's cost of
borrowing to fund future  growth as well as the ability of its customers to sell
products in markets sensitive to interest rate fluctuations.

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", "continue",
"may", "plan",  "predict",  "should",  "will", "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

<PAGE>


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


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

     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.


                                    PART III

Item 9.   Directors, Executive Officers, Promoters and Control Persons;
          Compliance with Section 16(a) of the Exchange Act

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

<TABLE>
<CAPTION>
                                                                           Officer or
Name                    Age    Position                                  Director Since
----                    ---    --------                                  --------------
<S>                     <C>    <C>                                           <C>
John F. Ferraro         66     Chairman of the Board                         1979
                               Chief Executive Officer and Secretary

Robert A. Lerman        65     President and Director                        1979

Anthony C. Mirabella    58     Director                                      1985

Robert I. Lieberman     46     Treasurer and Chief Financial Officer         1986
</TABLE>

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

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

     Robert A. Lerman holds the degrees of Bachelor of  Mechanical  Engineering,
College  of the City of New York  (1957),  Master  of  Science  in  Mathematics,
Adelphi  College  (1961),  and  Master of  Science  in  Electrical  Engineering,
University of Connecticut  (1964). In 1979, Mr. Lerman was elected Treasurer and
a Director and in 1980 President of the  predecessor  to the Company.  Since the
Company's  1981  merger,  Mr.  Lerman has been  President  and a Director of the
Company,  and from 1981 through 1992 served as Treasurer.  In 1988,  Mr. Lerman,
along with Mr.  Ferraro,  founded  Pioneer Capital Corp., of which Mr. Lerman is
Secretary,   Treasurer  and  a  Director,   a  privately  held  venture  capital
corporation.  Mr. Lerman co-authored the text book,  Nonlinear Systems Dynamics,
which was  published in 1992 by Van Nostrand  Reinhold,  New York,  New York. In
1993,  Mr.  Lerman,  along with Mr.  Ferraro,  founded  Pioneer  Partners  Corp.
("PPC"),  of which Mr.  Lerman is Treasurer  and Managing  Director;  PPC is the
general  partner  of  Bridge  Investors  I  Limited  Partnership  ("Bridge"),  a
partnership  formed by Messrs.  Lerman and Ferraro for the purpose of  providing
venture capital financing to other companies;  Bridge distributed its assets and
dissolved  effective December 31, 1999. In 1997, Mr. Lerman became President and
a  Director  of  Pioneer  Ventures  Corp.  ("PVC")  and a  manager  of  Ventures
Management  Partners  LLC  ("VMP"),  the  general  partner of  Pioneer  Ventures
Associates Limited Partnership  ("PVALP"),  a partnership formed for the purpose
of providing venture capital  financing to other companies.  In 1998, Mr. Lerman
became a director of

<PAGE>


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


Initio, Inc., Tristar Corporation, and Energy Brands, Inc. 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 and its general partner
PPC, of which he is Treasurer,  Secretary and a Director; Bridge distributed its
assets and dissolved  effective  December 31, 1999. In 1997,  Mr. Ferraro became
Secretary  and a Director of PVC and a manager of VMP,  the  general  partner of
PVALP.  In 1998 Mr.  Ferraro  became a director of American  Interactive  Media,
Inc.; in 1999 he became a director of America's Shopping Mall, Inc.; and in 1998
and  reappointed in 2000 became a director of Fidelity First Financial Corp. See
Item 12.

     Anthony  C.   Mirabella   holds  the  degrees  of  Bachelor  of  Mechanical
Engineering,  Stevens  Institute  of  Technology  (1962) and Master in  Business
Administration, Western New England College (1969). He was elected a Director of
the Company in 1985. Mr. Mirabella has been employed by 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 per share for Messrs.  Ferraro and Lerman) less (ii) the
purchase price paid by the subscriber for each share sold  (approximately  $0.21
per-share).  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 11


                           SUMMARY COMPENSATION TABLE

<TABLE>
<CAPTION>
                                                                                Long Term Compensation
                                                 Annual                ----------------------------------------
                                              Compensation                   Awards          Payouts    Other
                                      ---------------------------      ------------------    -------   --------
                                                                                                       Company
                         Fiscal                         Other          Stock       Options/   LTIP      401(k)
Name/Position             Year        Salary/Bonus   Compensation      Awards        SARS    Payouts   Contrib.
-------------             ----        ------------   ------------      ------        ----    -------   --------
<S>                       <C>          <C>             <C>               <C>         <C>        <C>    <C>
John F. Ferraro (1)       2000         $170,760(2)      $3,210           $0          0 shs      $0       $518
Chairman of the Board,    1999         $173,151(2)      $4,125           $0          0 shs      $0       $499
Secretary & Director      1998         $149,029         $3,137           $0          0 shs      $0       $398

Robert A. Lerman(1)       2000         $176,852(2)      $4,125           $0          0 shs      $0     $1,096
President & Director      1999         $173,151(2)      $3,137           $0          0 shs      $0     $1,073
                          1998         $144,685         $3,450           $0          0 shs      $0       $776

Robert I. Lieberman(3)    2000         $130,509        $11,878           $0          0 shs      $0         $0
Treasurer and CFO &       1999         $129,801        $14,228           $0          0 shs      $0         $0
President of Turbotec     1998         $112,561        $15,330           $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,  2000,  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,
     2000,  the  amount  receivable  for  premiums  paid  on  the  policies  was
     $1,477,257.  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 2000 and 1999 Messrs.  Ferraro and Lerman each  received cash bonuses of
     $12,500 and $17,500, respectively.

(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, 2001, the Company
anticipates paying aggregate direct  remuneration (based on current salaries and
anticipated bonuses) of approximately $490,000 to all officers as a group (three
persons)  of which Mr.  Ferraro and Mr.  Lerman will each be paid  approximately
$180,000, Mr. Lieberman will be paid approximately $130,000.

     (c) Stock Option Plans

<PAGE>


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


     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, 2000 no 1992 Plan ISOs were  outstanding.  No options  under the
1992 Plan were granted in fiscal year ended March 31,  2000.  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, 2000. See also Item 10(e) and Item 12. The following
table reflects the  aggregated  option  exercise  values at year-end held by the
executive officers.

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

<TABLE>
<CAPTION>
                                                          Number of
                                                          Securities                 Value of
                                                          Underlying                 Unexercised
                                                          Unexercised                in-the-Money
                           Shares                         Options at                 Options at
                           Acquired                       FY-End                     FY-End ($)
Name of                    on               Value         Exercisable ("E")          Exercisable ("E")
Officer or Director        Exercise         Realized      Unexercisable ("U")        Unexercisable ("U")
-------------------        --------         --------      -------------------        -------------------
<S>                         <C>              <C>             <C>                         <C>
John F. Ferraro                  0               $0          1,948,182  E                $287,356  E
Robert A. Lerman                 0               $0          1,948,182  E                $287,356  E
Anthony C. Mirabella        50,000           $7,375              6,704  E                    $989  E
Robert I. Lieberman              0               $0            170,114  E                 $25,092  E
</TABLE>

     (e) 1995 Stock Options - On May 15, 1995, the Company's  Board of Directors
approved  the  adoption  of  the  1995  Stock  Options   ("1995   Options")  and
subsequently  granted  such stock  options to purchase  4,920,000  shares of the
Company's  Common  Stock.  The  purchase  price for the  exercise of the options
equaled the fair market value ("FMV") on the effective  date of the option,  May
19, 1995. A total of 590,000 options were reassigned in August, 1999 and granted
to members of the management team pro rata in accordance  with their terms.  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.

     (f) Option  Grants in Last Fiscal Year. No options were granted in the last
fiscal year.  However,  590,000 of the 1995 Options were  reassigned  in August,
1999 as  follows:  268,182 to Mr.  Lerman,  268,182 Mr.  Ferraro,  20,114 to Mr.
Lieberman, 6,704 to Mr. Mirabella, and 26,818 to two other individuals.

     (g)  Directors'  Fees - During  the  fiscal  year  ended  March  31,  2000,
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, 2001.

<PAGE>


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


     (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 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 determined
its matching  contributions to the 401(k) Plan for the plan year ending December
31, 2000 will equal a maximum of 200,000  shares of the Company's  common stock,
provided  that the value of such grant does not exceed  $35,000.  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  401(k)  Contribution"  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, 1999,  Column (1), and for all years from  inception of the
Plan through Plan year ended December 31, 1999, Column (2).

                                              Shares Contributed by the Company
                                             and Held in Trust Under 401(k) Plan
Name                                         -----------------------------------
Officers and Directors                         Column (1)           Column (2)
----------------------                         ----------           ----------
                                                                    (Aggregate)
John F. Ferraro(a)                                9,425                51,300
Robert A. Lerman(a)                              19,929                79,397
Robert I. Lieberman                                 -0-                16,939
Anthony C. Mirabella(a)                             -0-                   -0-

All officers and directors as a group(a)         29,354               147,636
  (4 persons)

Total Matching Contribution                     200,000               934,803
to all employees
(35 persons)

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

     (i) Compensation Committee Interlocks and Insider Participation - The Board
of Directors has not established a compensation  committee.  The compensation of
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

<PAGE>


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


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) a total of 640,000  shares of common  stock were sold on January  12,
1999 to two officers/directors of the Company, and 50,000 shares of common stock
were sold on July 5, 1999 to one director 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 $37,950.
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; (b) a total of 590,000  options were
reassigned  in  August,  1999 to  members  of the  management  team  pro rata in
accordance with their terms. The expiration date of the options is September 30,
2002,  (c) a total of 125,000  shares of common stock were issued from shares of
treasury stock on October 1, 1999 as stock bonus awards.  The shares were valued
at $0.04 per share. 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. See also Item 10(d)
and Item 12.

Item 11.  Security Ownership of Certain Beneficial Owners and Management

     The following table sets forth, as of May 24, 2000, 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.


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

Directors and Officers
----------------------
John F. Ferraro                        4,057,462 shs (2)(6)             25.8%
Robert A. Lerman                       4,341,539 shs (2)(7)             27.6%
Anthony C. Mirabella                     241,791 shs (3)                 1.8%
Robert I. Lieberman                      272,853 shs (4)                 2.0%

All officers and                       8,913,645 shs (5)                49.9%
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 1,948,182 shares;  includes 51,300
     shares held for Mr.  Ferraro and 79,397 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 934,803 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  6,704  shares.   Excludes  the
     aggregate  934,803  shares held in trust by the trustees of the 401(k) Plan
     for all of the participating employees.

<PAGE>


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


(4)  Includes  options  exercisable to acquire 170,114  shares;  includes 16,939
     shares held in trust under the Company's 401(k) Plan.

(5)  Includes  options  exercisable  to acquire  4,073,182  shares;  includes an
     aggregate  147,636 shares held in trust under the Company's 401(k) Plan for
     each respective  officer's  account;  excludes the aggregate 934,803 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)  The  aggregate  holdings of Company  stock now owned by the John F. Ferraro
     Defined Benefit Pension Plan and Trust established in 1984 equals 1,370,000
     shares;  Mr.  Ferraro,  as Trustee of that  pension  plan,  has full voting
     authority  over that such shares  which have been  included  Mr.  Ferraro's
     aggregate beneficial ownership calculation.

(7)  The  aggregate  holdings of Company stock now owned by the Robert A. Lerman
     Money Purchase Plan and Trust  established in 1988 equals 1,291,880 shares;
     Mr. Lerman, as Trustee of that pension plan, has full voting authority over
     such shares which 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 last two (2) fiscal years,  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,  except as presented below.  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.

     With Directors and Officers, and Related Persons. A total of 590,000 of the
1995 stock options were reassigned to the management team pro rata in accordance
with their terms.  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 two of the Company's  directors,  Messrs.  Lerman and Mirabella,
along with  Brenda  Ferraro,  the wife of one of the  directors,  and 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 ended March 31, 2000.

     (d) Indebtedness of Management - At March 31, 2000, no member of management
was indebted to the Company in excess of $60,000.

Item 13.  Exhibits and Reports on Form 8-K

     (a)  Financial Statements

          Independent Auditors' Report.

          Consolidated Balance Sheets - March 31, 2000 and March 31, 1999.

          Consolidated  Statements of Income and  Comprehensive  Income (Loss) -
          For The Years Ended March 31, 2000, 1999 and 1998.

          Consolidated  Statements of Stockholders' Equity - For The Years Ended
          March 31, 2000, 1999 and 1998.

<PAGE>


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


          Consolidated  Statements of Cash Flows - For The Years Ended March 31,
          2000, 1999 and 1998.

          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)       July 23, 1999 Secured  Construction to Permanent Note in
                        the original principal amount of $1,750,000.

          (10)(ii)      July 23, 1999 Construction Loan Agreement.

          (11)(i)       Calculations   of  Earnings  Per  Common   Share.   This
                        information   is   presented   in  Footnote  10  to  the
                        Consolidated 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.
                                AND SUBSIDIARIES

                        CONSOLIDATED FINANCIAL STATEMENTS
                          AS OF MARCH 31, 2000 AND 1999



                                  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 (Loss)          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.
                         628 Hebron Avenue, Building #3
                         Glastonbury, Connecticut 06033


                          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,  2000  and  1999,  and  the  related
consolidated statements of income and comprehensive income (loss), stockholders'
equity,  and cash flows for the years ended March 31, 2000, 1999 and 1998. 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  consolidated  financial  statements are
free of material  misstatement.  An audit includes  examining,  on a test basis,
evidence  supporting the amounts and disclosures in the  consolidated  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,  2000 and  1999,  and the  results  of their
operations  and their cash flows for the years  ended March 31,  2000,  1999 and
1998 in conformity with generally accepted accounting principles.


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

Glastonbury, Connecticut
May 19, 2000


                                      - 1 -

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS
                             MARCH 31, 2000 AND 1999


<TABLE>
<CAPTION>
                                                                           2000              1999
                                                                       ------------      ------------
<S>                                                                    <C>               <C>
                                     ASSETS
CURRENT ASSETS
  Cash                                                                 $      2,814      $      1,658
  Accounts receivable, net of allowance for doubtful
    accounts of $20,000 and $11,000 in 2000 and 1999, respectively        1,226,817         1,259,524
  Inventories                                                             1,802,535         1,957,097
  Prepaid expenses and other current assets                                 259,079           267,654
  Deferred income taxes                                                        --             100,000
                                                                       ------------      ------------
      Total current assets                                                3,291,245         3,585,933

PROPERTY, PLANT AND EQUIPMENT, net                                        5,833,988         4,586,199

MARKETABLE EQUITY SECURITIES                                                 62,456           185,000

OTHER ASSETS                                                              1,814,528         1,585,319
                                                                       ------------      ------------
                                                                       $ 11,002,217      $  9,942,451
                                                                       ============      ============

                      LIABILITIES AND STOCKHOLDERS' EQUITY

CURRENT LIABILITIES
  Demand note payable and current maturities of long-term debt         $  1,877,733      $  1,854,552
  Accounts payable                                                        1,466,680         1,249,110
  Accrued expenses and taxes                                                 97,388           162,131
                                                                       ------------      ------------
      Total current liabilities                                           3,441,801         3,265,793

LONG-TERM LIABILITIES
  Long-term debt, less current maturities included above                  3,013,700         2,194,241
  Deferred income taxes                                                      95,000              --
                                                                       ------------      ------------
                                                                          3,108,700         2,194,241

STOCKHOLDERS' EQUITY
  Common stock, par value $.01 per share; authorized 25,000,000
    shares                                                                  135,800           133,050
  Additional paid-in capital                                              5,298,398         5,444,855
  Deficit                                                                  (436,374)         (515,967)
  Accumulated other comprehensive income (loss)                            (381,544)         (259,000)
                                                                       ------------      ------------
                                                                          4,616,280         4,802,938
  Less: treasury stock, at cost                                             164,564           320,521
                                                                       ------------      ------------
                                                                          4,451,716         4,482,417
                                                                       ------------      ------------
                                                                       $ 11,002,217      $  9,942,451
                                                                       ============      ============
</TABLE>


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


                                     - 2 -

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
        CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (LOSS)
                FOR THE YEARS ENDED MARCH 31, 2000, 1999 AND 1998


<TABLE>
<CAPTION>
                                                                   2000              1999              1998
                                                               ------------      ------------      ------------
<S>                                                            <C>               <C>               <C>
NET SALES                                                      $ 10,731,636      $ 10,445,117      $  8,601,629

COST OF SALES                                                     8,160,301         7,761,648         6,371,482
                                                               ------------      ------------      ------------

      Gross profit                                                2,571,335         2,683,469         2,230,147

SELLING, GENERAL AND ADMINISTRATIVE
  EXPENSES                                                        1,986,224         1,957,511         1,758,473
                                                               ------------      ------------      ------------

      Income from operations                                        585,111           725,958           471,674

OTHER INCOME (EXPENSE)
  Other, net                                                         44,087           (93,795)            9,608
  Interest expense                                                 (354,605)         (388,411)         (368,532)
                                                               ------------      ------------      ------------
                                                                   (310,518)         (482,206)         (358,924)
                                                               ------------      ------------      ------------
      Income before provision for (benefit from)
        income taxes                                                274,593           243,752           112,750

PROVISION FOR (BENEFIT FROM) INCOME TAXES                           195,000              --            (100,000)
                                                               ------------      ------------      ------------

      Net income                                                     79,593           243,752           212,750

OTHER COMPREHENSIVE INCOME (LOSS), net of tax
  Unrealized holding gains (losses) arising during period          (122,544)         (167,470)             --
  Add:  reclassification adjustment for losses included in
    net income                                                         --             104,470              --
                                                               ------------      ------------      ------------
      Other comprehensive income (loss), net of tax                (122,544)          (63,000)             --
                                                               ------------      ------------      ------------

      Comprehensive income (loss)                              $    (42,951)     $    180,752      $    212,750
                                                               ============      ============      ============

EARNINGS PER COMMON SHARE                                      $       0.01      $       0.02      $       0.02
                                                               ============      ============      ============

EARNINGS PER COMMON SHARE - ASSUMING DILUTION                  $       0.01      $       0.02      $       0.01
                                                               ============      ============      ============
</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, 2000, 1999 AND 1998


<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, 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)

Issuance of stock pursuant to
  401(k) plan                         100,000         1,000         3,500           --             --
Issuance of stock pursuant to
  incentive plan                       50,000           500         2,250           --             --
Cancellation of treasury shares          --            --        (155,957)      (125,000)       155,957
Issuance of stock                     125,000         1,250         3,750           --             --
Comprehensive income                     --            --            --             --             --
                                  -----------   -----------   -----------    -----------    -----------

Balance, March 31, 2000            13,580,008   $   135,800   $ 5,298,398        131,898    $  (164,564)
                                  ===========   ===========   ===========    ===========    ===========
</TABLE>


                                                  Accumulated
                                                     Other
                                                 Comprehensive
                                      Deficit     Income (Loss)      Total
                                    -----------    -----------    -----------

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

Issuance of stock pursuant to
  401(k) plan                              --             --            4,500
Issuance of stock pursuant to
  incentive plan                           --             --            2,750
Cancellation of treasury shares            --             --             --
Issuance of stock                          --             --            5,000
Comprehensive income                     79,593       (122,544)       (42,951)
                                    -----------    -----------    -----------

Balance, March 31, 2000             $  (436,374)   $  (381,544)   $ 4,451,716
                                    ===========    ===========    ===========


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


                                     - 4 -

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                FOR THE YEARS ENDED MARCH 31, 2000, 1999 AND 1998


<TABLE>
<CAPTION>
                                                                    2000           1999           1998
                                                                  ---------      ---------      ---------
<S>                                                               <C>            <C>            <C>
CASH FLOWS FROM OPERATING ACTIVITIES
  Net income                                                      $  79,593      $ 243,752      $ 212,750
  Adjustments to reconcile net income to net
    cash provided by operating activities:
      Depreciation and amortization                                 334,839        337,122        334,858
      Deferred tax provision (benefit)                              195,000           --         (100,000)
      Realized losses on marketable
        equity securities                                              --          104,470           --
      Changes in operating assets and liabilities:
        Increase in accounts payable                                217,570        336,675        153,521
        Decrease (increase) in inventories                          154,562       (508,677)      (217,854)
        Decrease (increase) in accounts receivable                   32,707       (220,446)       188,077
        Decrease (increase) in prepaid expenses and
          other current assets                                        8,575        (27,091)       (79,804)
        (Decrease) increase in accrued expenses and taxes           (60,243)        46,785          8,799
        Increase in other assets                                   (229,209)      (205,937)      (214,249)
                                                                  ---------      ---------      ---------
          Net cash provided by operating activities                 733,394        106,653        286,098
                                                                  ---------      ---------      ---------
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                       (419,276)      (263,119)      (347,834)
                                                                  ---------      ---------      ---------
          Net cash used in investing activities                    (419,276)      (323,589)      (347,834)
                                                                  ---------      ---------      ---------
CASH FLOWS FROM FINANCING ACTIVITIES
  Proceeds from notes payable and long-term debt                     11,876        472,614        460,949
  Proceeds from issuance of stock                                     7,750         35,200           --
  Principal payments on debt obligations                           (332,588)      (291,243)      (399,740)
                                                                  ---------      ---------      ---------
          Net cash (used in) provided by financing activities      (312,962)       216,571         61,209
                                                                  ---------      ---------      ---------
NET INCREASE (DECREASE) IN CASH                                       1,156           (365)          (527)

CASH, beginning of year                                               1,658          2,023          2,550
                                                                  ---------      ---------      ---------
CASH, end of year                                                 $   2,814      $   1,658      $   2,023
                                                                  =========      =========      =========
</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, 2000, 1999 AND 1998


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.

     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

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 2000, 1999 AND 1998


NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

     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, 2000 and 1999.

     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 1998,  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 fair value
     method or measuring  compensation  using the intrinsic value approach under
     Accounting  Principles  Board (APB) Opinion No. 25. If the intrinsic  value
     approach for  measurement  is elected,  SFAS No. 123 requires  supplemental
     disclosure  to show  the  effects  of  using  the  fair  value  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.

     EARNINGS PER COMMON SHARE

     In fiscal 1999,  the Company  adopted  Statement  of  Financial  Accounting
     Standards (SFAS) No. 128, "Earnings Per Share". SFAS No. 128 simplifies the
     standards for computing  earnings per share (EPS) and makes them comparable
     to international EPS standards. It replaced 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.

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 2000, 1999 AND 1998


NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

     ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

     In fiscal 1999,  the Company  adopted  Statement  of  Financial  Accounting
     Standards  (SFAS)  No.  130,   "Reporting   Comprehensive   Income,"  which
     established 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 consolidated  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, 2000 and
          1999, all cash balances were fully insured.

     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,  2000,
          1999 and 1998 aggregated 54% (4 customers),  47% (3 customers) and 56%
          (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
          realized 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.

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 2000, 1999 AND 1998


NOTE 2 - FINANCIAL INSTRUMENTS (Continued)

     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  approximate
     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 stock 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.

     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:

                                             2000              1999
                                          ----------        ----------

          Raw materials                   $1,041,791        $1,085,891
          Work-in-process                    281,653           318,750
          Finished goods                     479,091           552,456
                                          ----------        ----------
                                          $1,802,535        $1,957,097
                                          ==========        ==========

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 2000, 1999 AND 1998


NOTE 4 - PROPERTY, PLANT AND EQUIPMENT

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

                                                 2000            1999
                                             -----------     -----------

          Land                               $   204,484     $   204,484
          Buildings                            4,867,833       3,676,096
          Machinery and equipment              4,258,741       4,020,040
          Furniture and fixtures                 749,899         740,713
          Improvements                           792,991         713,524
                                             -----------     -----------
                                              10,873,948       9,354,857
          Less: accumulated depreciation       5,039,960       4,768,658
                                             -----------     -----------
                                             $ 5,833,988     $ 4,586,199
                                             ===========     ===========

     Depreciation expense totaled $322,899,  $325,182 and $318,586 for the years
     ended March 31, 2000, 1999 and 1998, respectively.

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,
                    ----------------------------------------------------------------------------
                                     2000                                   1999
                    -----------------------------------     ------------------------------------
                                    Gross                                  Gross
                                 Unrealized      Market                  Unrealized      Market
                      Cost       Gain (Loss)     Value        Cost       Gain (Loss)      Value
                    --------     ----------     -------     --------     ----------     --------
<S>                 <C>          <C>            <C>         <C>          <C>            <C>
Noncurrent
Common
  stock             $444,000     $(381,544)     $62,456     $444,000     $(259,000)     $185,000
                    ========     =========      =======     ========     =========      ========
</TABLE>

     The Company owns 37,000  shares of common stock of a developer of renewable
     energy projects which has been classified as noncurrent  marketable  equity
     securities.  As of March 31, 2000 and 1999, accumulated other comprehensive
     loss  totaling  $381,544 and $259,000,  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 $-0-,  $104,470 and $-0-
     are included in other income  (expense),  net for the years ended March 31,
     2000,  1999  and  1998,  respectively,  in  the  accompanying  consolidated
     statements of income and comprehensive income (loss).

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 2000, 1999 AND 1998


NOTE 6 - OTHER ASSETS

     Other assets consist of the following as of March 31:

<TABLE>
<CAPTION>
                                                                 2000         1999
                                                              ----------   ----------

<S>                                                           <C>          <C>
     Land contiguous to principal facility                    $  119,666   $  118,109
     Intangible assets, net of accumulated amortization of
       $391,628 and $379,688 in 2000 and 1999, respectively      103,743      115,683
     Officers' life insurance premiums receivable, net         1,477,257    1,243,234
     Investment                                                  100,000      100,000
     Other                                                        13,862        8,293
                                                              ----------   ----------
                                                              $1,814,528   $1,585,319
                                                              ==========   ==========
</TABLE>

     Amortization  expense  totaled  $11,940,  $11,940 and $16,272 for the years
     ended March 31, 2000, 1999 and 1998, respectively.

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% (10% at March 31, 2000).  Borrowings outstanding at March 31, 2000 and
     1999 totaled $1,525,319 and $1,513,443, 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.

NOTE 8 - LONG-TERM DEBT

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

                                                         2000         1999
                                                      ----------   ----------

     Mortgage note payable - principal facility       $1,720,833   $  758,328
     Mortgage note payable - multi-purpose building    1,020,471    1,044,353
     Term notes payable                                  624,810      684,082
     Other notes payable                                    --         48,587
                                                      ----------   ----------
                                                       3,366,114    2,535,350
     Less:  current maturities                           352,414      341,109
                                                      ----------   ----------
                                                      $3,013,700   $2,194,241
                                                      ==========   ==========

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 2000, 1999 AND 1998


NOTE 8 - LONG-TERM DEBT (Continued)

     On July 23, 1999, the Company obtained a secured term note from a bank, the
     proceeds  from  which  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  $1,750,000  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%
     (10% at March 31, 2000),  maturing on December 1, 2004. 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% (10% at March 31, 2000), maturing through fiscal 2007.
     The notes are secured by substantially all assets of the Company.

     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. 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 the loan's
     maturity date.

     Maturities  of long-term  debt for each of the years  succeeding  March 31,
     2000 are as follows:

          Year ending March 31,
            2001                                                 $  352,414
            2002                                                    329,180
            2003                                                    250,293
            2004                                                    166,108
            2005                                                    129,674
            2006 and thereafter                                   2,138,445
                                                                 ----------
                                                                 $3,366,114
                                                                 ==========

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. The 1990 Plan expired on January 1, 1999.

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 2000, 1999 AND 1998


NOTE 9 - STOCKHOLDERS' EQUITY (Continued)

     STOCK OPTIONS (Continued)

     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.

     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, 2000,  700,000 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, 2000, 1999, and 1998, respectively.

     A summary of the status of the  Company's  three stock  option  plans as of
     March 31, 2000,  1999 and 1998 and changes during the years ending on those
     dates is presented below:

<TABLE>
<CAPTION>
                                     2000                    1999                          1998
                             -------------------      -------------------       --------------------------
                             Outstanding   Price      Outstanding   Price       Outstanding      Price
                             -----------   -----      -----------   -----       -----------   ------------
<S>                           <C>          <C>         <C>          <C>          <C>          <C>
Outstanding at beginning
  of year                     4,270,000    $.055       4,910,000    $.055        5,322,500    $.055 to .39
Granted                          80,000    $.055            --      $  --             --      $     --
Excercised                      (50,000)   $.055        (640,000)   $.055             --      $     --
Canceled                           --      $  --            --      $  --         (412,500)   $.39  to .53
                              ---------                ---------                 ---------
Outstanding at end of year    4,300,000    $.055       4,270,000    $.055        4,910,000    $.055
                              =========                =========                 =========
</TABLE>

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

<TABLE>
<CAPTION>
                                                    Year Ended March 31,
                          -------------------------------------------------------------------------
                                    2000                     1999                     1998
                          ----------------------   ----------------------    ----------------------
                          As Reported  Pro Forma   As Reported  Pro Forma    As Reported  Pro Forma
                          -----------  ---------   -----------  ---------    -----------  ---------
<S>                         <C>         <C>          <C>         <C>           <C>         <C>
Income:
  Net income                $79,593     $78,473      $243,752    $243,752      $212,750    $212,750
                            =======     =======      ========    ========      ========    ========
  Income per common share      $.01        $.01          $.02        $.02          $.02        $.02
                            =======     =======      ========    ========      ========    ========
</TABLE>

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 2000, 1999 AND 1998


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 the years ended
     March 31, 2000, 1999 and 1998 is as follows:

<TABLE>
<CAPTION>
                                                2000                              1999                             1998
                                   -----------------------------     -----------------------------     -----------------------------
                                      Income           Shares           Income          Shares           Income           Shares
                                   (Numerator)     (Denominator)     (Numerator)     (Denominator)     (Numerator)     (Denominator)
                                   -----------     -------------     -----------     -------------     -----------     -------------
<S>                                <C>               <C>             <C>               <C>             <C>               <C>
Net income                         $    79,593                       $   243,752                       $   212,750
                                   -----------                       -----------                       -----------
Basic EPS
 Income available to common
  stockholders                          79,593       13,526,734          243,752       12,789,127          212,750       12,550,159

Effect of Dilutive Securities
  Stock options                           --          2,711,324             --          2,714,192             --          3,131,014
                                   -----------      -----------      -----------      -----------      -----------      -----------
Diluted EPS
Income available to common
  stockholders  including
  assumed  conversions             $    79,593       16,238,058      $   243,752       15,503,319      $   212,750       15,681,173
                                   ===========      ===========      ===========      ===========      ===========      ===========
</TABLE>

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, 2000.  Rental
     income aggregated $51,750 $49,833 and $45,042 for the years ended March 31,
     2000,  1999  and  1998,  respectively,  and is  included  in  other  income
     (expense),  net in the accompanying  consolidated  statements of income and
     comprehensive income (loss).

NOTE 12 - RESEARCH AND DEVELOPMENT COSTS

     Research   and   development   costs   charged  to  selling,   general  and
     administrative expenses amounted to $104,438, $116,783 and $120,115 for the
     years ended March 31, 2000, 1999 and 1998, respectively.

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 2000, 1999 AND 1998


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 $28,101,  $29,603 and $35,189 for the years
     ended March 31, 2000, 1999, and 1998, respectively.

NOTE 14 - INCOME TAXES

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

                                  2000            1999           1998
                               ----------      ----------      ---------
          Current
            Federal            $     --        $     --        $    --
            State                    --              --             --
                               ----------      ----------      ---------
          Deferred                195,000            --         (100,000)
                               ----------      ----------      ---------
                               $  195,000      $     --        $(100,000)
                               ==========      ==========      =========

     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 2000, 1999 and 1998, 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.

     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
     2000,  1999 and 1998. The principal  reasons for this difference are listed
     in the following table:

                                                2000       1999       1998
                                                ----       ----       ----
          Statutory federal income tax            34%        34%        34%
          Insurance                              (28)       (10)       (28)
          Amortization and other                   3          1         14
          Utilization of net operating loss
            carryforwards                         98        (16)       (80)
          Change in valuation allowance          (36)        (9)       (29)
                                                 ---        ---        ---
                                                  71%       - %        (89)%
                                                 ===        ===        ===

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 2000, 1999 AND 1998


NOTE 14 - INCOME TAXES (Continued)

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

                                      2000         1999         1998
                                    ---------    ---------    ---------

     Net operating loss - federal   $ 223,000    $  48,000    $(122,000)
     Property and equipment, net       10,000       24,000       17,000
     Other                               --          4,000        1,000
     Uniform capitalization            15,000       (2,000)       3,000
     Net operating loss - state        47,000      (29,000)      33,000
     Valuation allowance             (100,000)     (45,000)     (32,000)
                                    ---------    ---------    ---------
                                    $ 195,000    $    --      $(100,000)
                                    =========    =========    =========

     The  components  of the net  deferred tax accounts as of March 31, 2000 and
     1999 are as follows:

                                                2000           1999
                                             -----------    -----------
     Deferred tax assets:
       Net operating loss - federal          $   694,000    $   917,000
       Investment tax credits                    144,000        144,000
       Net operating loss - state                   --           47,000
       Uniform capitalization                     21,000         36,000
       Other                                      18,000         18,000
       Valuation allowance                          --         (100,000)
                                             -----------    -----------
         Total deferred tax asset                877,000      1,062,000

     Deferred tax liabilities:
       Property and equipment, net              (972,000)      (962,000)
                                             -----------    -----------
         Total deferred tax liability           (972,000)      (962,000)
                                             -----------    -----------

        Net deferred tax asset (liability)   $   (95,000)   $   100,000
                                             ===========    ===========

     The Company has  $1,750,000 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, 2000 and expire in years ending March 31, 2001 and 2002.

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 2000, 1999 AND 1998


NOTE 14 - INCOME TAXES (Continued)

     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 2000,
     the  Company  reduced  the  valuation  allowance  applied  against  the net
     operating  loss   carryforwards  by   approximately   $100,000  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, 2000, 1999 and 1998 totaled  $11,000,  $4,500
     and $5,485, 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 $205,000 for the fiscal year ended March
     31,  1998,  $215,000 for the fiscal years ended March 31, 1999 and 2000 and
     the fiscal  year  ending  March 31,  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).

     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.

<PAGE>


                      THERMODYNETICS, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
                          MARCH 31, 2000, 1999 AND 1998


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, 2000, 1999 and 1998 is as follows:

<TABLE>
<CAPTION>
                                                              Year Ended March 31,
                                                   -----------------------------------------
                                                       2000           1999           1998
                                                   -----------    -----------    -----------
<S>                                                <C>            <C>            <C>
     CASH PAID
     Interest                                      $   354,605    $   388,411    $   368,532
     Income taxes                                         --             --             --

     NON-CASH INVESTING AND FINANCING ACTIVITIES
     Long-term debt incurred to acquire
       property, plant and equipment               $ 1,163,352    $   147,764    $      --

     Investment purchased on margin                       --          100,000           --

     Issuance of stock pursuant to 401(k) plan           4,500          5,485          8,422

     Unrealized holding gain (loss) on long-term
       investment                                     (122,544)       (63,000)          --

     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, 2000, 1999 and 1998.

<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 22, 2000


     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,
     the Board, Chief Executive Officer,               President and Director
     Secretary and Director

Date: June 22, 2000                               Date: June 22, 2000



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

Date: June 27, 2000                               Date: June 22, 2000

<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, 2000


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

<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)     July 23, 1999 Secured Construction to Permanent Note in the original
            principal amount of $1,750,000.

(10)(ii)    July 23, 1999 Construction Loan Agreement.

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

(22)        Subsidiaries - at Part III, Item 13 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-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)



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