<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
Company's Form 10-KSB for the period ended as stated below and is qualified
in its entirety by reference to such financial statements.
</LEGEND>
<CIK> 0000351902
<NAME> Thermodynetics, Inc.
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> MAR-31-2000
<PERIOD-START> APR-01-1999
<PERIOD-END> MAR-31-2000
<CASH> 2,814
<SECURITIES> 0
<RECEIVABLES> 1,246,817
<ALLOWANCES> 20,000
<INVENTORY> 1,802,535
<CURRENT-ASSETS> 3,291,245
<PP&E> 10,873,948
<DEPRECIATION> 5,039,960
<TOTAL-ASSETS> 11,002,217
<CURRENT-LIABILITIES> 3,441,801
<BONDS> 0
0
0
<COMMON> 135,800
<OTHER-SE> 4,315,916
<TOTAL-LIABILITY-AND-EQUITY> 11,002,217
<SALES> 10,731,636
<TOTAL-REVENUES> 10,731,636
<CGS> 8,160,301
<TOTAL-COSTS> 1,986,224
<OTHER-EXPENSES> (44,087)
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 354,605
<INCOME-PRETAX> 274,593
<INCOME-TAX> 195,000
<INCOME-CONTINUING> 79,593
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 79,593
<EPS-BASIC> .01
<EPS-DILUTED> .01
</TABLE>