<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM STAR GAS
PARTNERS, L.P. AND SUBSIDIARIES CONDENSED CONSOLIDATED BALANCE SHEET AS OF JUNE
30, 2000 AND CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS FOR THE INTERIM
PERIOD OCTOBER 1, 1999 THROUGH JUNE 30, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0001002590
<NAME> STAR GAS PARTNERS, L.P.
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> JUN-30-2000
<CASH> 7,649
<SECURITIES> 0
<RECEIVABLES> 82,693
<ALLOWANCES> 2,725
<INVENTORY> 19,521
<CURRENT-ASSETS> 121,446
<PP&E> 214,245
<DEPRECIATION> 47,505
<TOTAL-ASSETS> 607,339
<CURRENT-LIABILITIES> 111,536
<BONDS> 302,681
0
0
<COMMON> 186,701
<OTHER-SE> 0
<TOTAL-LIABILITY-AND-EQUITY> 607,339
<SALES> 562,795
<TOTAL-REVENUES> 638,744
<CGS> 328,038
<TOTAL-COSTS> 416,924
<OTHER-EXPENSES> 160,833
<LOSS-PROVISION> 1,425
<INTEREST-EXPENSE> 19,981
<INCOME-PRETAX> 39,183
<INCOME-TAX> 373
<INCOME-CONTINUING> 39,061
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 39,061
<EPS-BASIC> 2.13
<EPS-DILUTED> 2.13
</TABLE>