<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from EMCOR's
Condensed Consolidated Financial Statements for the nine months ended September
30, 1999 and is qualified in its entirety by reference to such financial
statements.
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> U.S. Dollars

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<EXCHANGE-RATE>                                      1
<CASH>                                          37,861
<SECURITIES>                                         0
<RECEIVABLES>                                  722,282
<ALLOWANCES>                                    26,350
<INVENTORY>                                      7,522
<CURRENT-ASSETS>                               906,940
<PP&E>                                          67,001
<DEPRECIATION>                                  29,823
<TOTAL-ASSETS>                               1,030,348
<CURRENT-LIABILITIES>                          713,482
<BONDS>                                        116,056
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           109
<OTHER-SE>                                     145,144
<TOTAL-LIABILITY-AND-EQUITY>                 1,030,348
<SALES>                                      2,047,221
<TOTAL-REVENUES>                             2,047,221
<CGS>                                        1,850,621
<TOTAL-COSTS>                                2,012,015
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                   371
<INTEREST-EXPENSE>                               6,313
<INCOME-PRETAX>                                 28,893
<INCOME-TAX>                                    12,777
<INCOME-CONTINUING>                             16,116
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    16,116
<EPS-BASIC>                                     1.66
<EPS-DILUTED>                                     1.33