Exhibit 99.
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                                                  NEWS RELEASE
                                                    /FOR IMMEDIATE RELEASE/
                                                    Contact:  Robert A. Lerman
                                                    860-683-2005     Windsor, CT
                                                    OTCBB:  TDYTE
                                                    July 31, 2005

         Thermodynetics Announces Results for Year Ended March 31, 2005

THERMODYNETICS, INC. WINDSOR, CT - (TDYTE: OTCBB)


           Thermodynetics generated record revenues for the year ended March 31,
2005 at $24.4 million, a 48% increase over fiscal 2004.

           The  Company's  Turbotec  subsidiary  is  operating  profitably  with
increasing  revenues.  The sales  increase is due largely to the strong  housing
market    augmented    by   marine    air    conditioning    applications    and
commercial/industrial  building HVAC needs.  The Company's new titanium  special
purpose  enhanced  surface tubing and a line of heat exchangers that use plastic
shell casings for its helical  coaxial coils allow for maximum heat transfer and
protection from highly erosive and corrosive  environments at a substantial cost
reduction from traditional  metal jacketed  products.  Initial response to these
products  has  been  quite  favorable  from  swimming  pool  and spa  heat  pump
manufacturers.

           The cost of metals  (principally steel,  copper,  stainless steel and
nickel) has risen sharply during the current year to their highest levels in the
past six years. This has impacted margins,  especially at the Vulcan operations,
as the increases cannot be fully passed on to customers.

           In 2003, the Company  cquired  Michigan  based Vulcan  Industries,  a
supplier of fabricated  metal tubing  components  principally  to the automotive
industry.  Vulcan's shipments increased dramatically as a program for automotive
exhaust  system tubing moved into full  production  during the 2005 fiscal year.
Significant  start up costs and a six-month  delay in the start date  associated
with the program generated a loss from operations of $2,413,000 in 2005 compared
to a nominal loss of $7,000 in the prior year.

           Vulcan   reached  a  virtual  break-even  operation  in May 2005 as a
result of the implementation of Lean Manufacturing procedures.  However, a major
storm in Lower Michigan at the early part of June caused a multi week disruption
to  operations  that  severely  impacted  the ability of the company to meet its
manufacturing  commitments.  The cash shortfall  triggered a need for Vulcan and
Thermodynetics  to enter into agreement  with the Company's  lenders and a major
customer whereby the sale of certain manufacturing assets was consummated.  This
resulted  in the write off of  previously  capitalized  items and  impaired  the
carrying  values  of the  goodwill  and  other  Vulcan  assets.  The  write  off
constituted a one-time charge and aggregated  approximately $3.3 million. At the
same time, a  significant  amount of debt was removed from the balance  sheet as
loans secured by the equipment were repaid in full.

           Vulcan  continues  to operate  the  equipment  for the benefit of the
customer  and  is  billing  the  customer  for  such  services,   although  such
arrangement is expected to be discontinued in the near future.  The loss of that
business will  severely  impact the ability of Vulcan to continue to service its
other  customers  as the  overhead  of the  facility  may make  such  operations
uneconomic.



         The  Company's  access  to  credit  is  expected  to  be  adequate  for
Turbotec's  operations  as  increased  sales  revenues  coupled  with  operating
efficiencies  are expected to create  sufficient  availability  in its revolving
line of credit.  The need for term debt  financing to fund  capital  expenditure
programs  will be explored  with its primary  lender  during the coming  months.
However, funding for Vulcan's operations are likely to be difficult to satisfy.

Considerations  regarding  Forward-Looking   Disclosures.
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This press release 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 affect 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 .
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
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.




                                                    Year Ended March 31,
                                                 2005                 2004
                                                 ----                 ----
Net Sales                                   $ 24,459,427          $ 16,503,591
Operating Income (Loss)                     ($ 3,253,514)         $    950,905
Income (Loss) Before Income Taxes           ($ 3,843,236)         $    424,836
Net Income (Loss)                           ($ 3,609,236)         $    294,836
Weighted Shares Outstanding-Basic      (a)     3,946,439            18,385,085
Weighted Shares Outstanding-Diluted    (a)     3,946,439            18,385,085
Earnings (Loss) Per Share-Basic        (a)      ($.91)                $ .02
Earnings (Loss) Per Share-Diluted      (a)      ($.91)                $ .02

     (a) 2005 results reflect a reverse five for one split effective April 18,
2005

Thermodynetics,  Inc. is a manufacturer of high  performance,  high quality heat
exchangers, fabricated metal components and flexible connector products for heat
transfer,  transportation,  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, appliance, water
heating and aerospace industries.

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 is also  used as a  flexible  connector  in
plumbing applications.