Exhibit 99.1:  Press Release
                                                      Contact:  Robert A. Lerman
                                                                    860-683-2005
NEWS RELEASE                                                        OTCBB:  TDYN
                                                                   April 4, 2005
                THERMODYNETICS Establishes April 15, 2005 for the
                     Previously Approved Reverse Stock Split

Windsor, CT - Monday, April 4, 2005 - Thermodynetics, Inc. (TDYN:OTCBB)

Thermodynetics' Board of Directors has set April 15, 2005 as the record date for
the  one-for-five  (1:5)  reverse  stock split and the split is  effective as of
9:30a.m.  on Monday April 18, 2005. The Company's  transfer  agent,  Continental
Stock Transfer and Trust Company,  will forward  information and instructions to
shareholders  in order  to  replace  currently  existing  certificates  with new
certificates  reflecting the new number of shares.  After the stock split, there
will be approximately 3,960,000 shares issued and outstanding,  the exact number
is currently  indeterminate  as the effect of the stock split will result in the
rounding up of any fractional shares.

The purpose of this reverse  stock split is to  generally  make the common stock
more attractive to investors and to create greater  marketability  of the Common
Stock.  The Board of Directors  believes that the reverse split will result in a
higher stock price which may help generate  investor interest in the Company and
help the Company attract and retain employees and other service providers.

FORWARD LOOKING STATEMENTS
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         This report 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,
changes in unit prices,  and supply and demand for the Company's  tubing product
lines in the markets served.

         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.

         Thermodynetics,  Inc.  through its Turbotec  Products  subsidiary  is a
world leader in enhanced heat transfer  technology and through Vulcan Industries
is a  qualified  supplier  of  fabricated  tubing  to the  automotive  and other
industries.  Turbotec's  enhanced  surface tubing produced at Turbotec  provides
higher  energy  efficiencies  for  applications  in the  biomedical,  aerospace,
automotive, boiler, marine, food and beverage and residential/commercial heating
and cooling industries.  Vulcan's state of the art bending,  sizing, cutting and
shaping  capabilities  make  it  a  preferred  supplier  to  Tier  1  automotive
suppliers.  The  Company's  tubing  products  support a wide array of automotive
component and heat transfer needs, including surface-enhanced tubing, single and
double wall coaxial condenser and evaporator coils and heat recovery systems.