<SUBMISSION>
<ACCESSION-NUMBER>0000950129-02-004158
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>3
<PERIOD>20020813
<ITEMS>7
<ITEMS>9
<FILING-DATE>20020814
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>COMFORT SYSTEMS USA INC
<CIK>0001035983
<ASSIGNED-SIC>1731
<IRS-NUMBER>760484996
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>8-K
<ACT>34
<FILE-NUMBER>001-13011
<FILM-NUMBER>02733400
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>777 POST OAK BOULEVARD
<STREET2>SUITE 500
<CITY>HOUSTON
<STATE>TX
<ZIP>77056
<PHONE>7138309600
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>777 POST OAK BOULEVARD
<STREET2>SUITE 500
<CITY>HOUSTON
<STATE>TX
<ZIP>77056
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>h99188e8vk.txt
<DESCRIPTION>COMFORT SYSTEMS USA, INC. - DATED 8/13/2002
<TEXT>
<PAGE>

================================================================================


                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                             ----------------------


                                    FORM 8-K

                                 CURRENT REPORT

     PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

        DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED): AUGUST 13, 2002

                         COMMISSION FILE NUMBER: 1-13011

                            COMFORT SYSTEMS USA, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

                   DELAWARE                              76-0526487
        (State or other jurisdiction        (I.R.S. Employer Identification No.)
              of incorporation)


                             777 POST OAK BOULEVARD
                                    SUITE 500
                              HOUSTON, TEXAS 77056
               (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) (ZIP CODE)

       REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (713) 830-9600



================================================================================

<PAGE>


ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS

         The following Exhibits are included herein:

         Exhibit 99.1 Statement Under Oath of Principal Executive Officer
Regarding Facts and Circumstances Relating to Exchange Act Filings.

         Exhibit 99.2 Statement Under Oath of Principal Financial Officer
Regarding Facts and Circumstances Relating to Exchange Act Filings.


ITEM 9.  REGULATION FD DISCLOSURE

         On August 13, 2002, in accordance with Order No. 4-460 and pursuant to
Section 21(a)(1) of the Securities Exchange Act of 1934, sworn statements were
filed with the Securities and Exchange Commission by the principal executive
officer and the principal financial officer of Comfort Systems USA, Inc. Copies
of each sworn statement are furnished as Exhibits 99.1 and 99.2 to this report.


                                      -2-
<PAGE>

                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.



                                        COMFORT SYSTEMS USA, INC.


                                        By:  /s/ William George
                                             ---------------------------------
                                             William George
                                             Senior Vice President and
                                             General Counsel

Date: August 13, 2002


                                      -3-
<PAGE>

                                  EXHIBIT INDEX


       Exhibit
        Number             Description

         99.1              Statement Under Oath of Principal Executive Officer
                           Regarding Facts and Circumstances Relating to
                           Exchange Act Filings

         99.2              Statement Under Oath of Principal Financial Officer
                           Regarding Facts and Circumstances Relating to
                           Exchange Act Filings


                                      -4-

</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>3
<FILENAME>h99188exv99w1.txt
<DESCRIPTION>STATEMENT UNDER OATH OF PRINCIPAL EXEC. OFFICER
<TEXT>
<PAGE>

                                                                    EXHIBIT 99.1


   STATEMENT UNDER OATH OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL
   OFFICER REGARDING FACTS AND CIRCUMSTANCES RELATING TO EXCHANGE ACT FILINGS

I, William F. Murdy, principal executive officer, state and attest that:

         (1)      to the best of my knowledge, based upon a review of the
                  covered reports of Comfort Systems USA, Inc., and, except as
                  corrected or supplemented in a subsequent covered report:

                  -        no covered report contained an untrue statement of a
                           material fact as of the end of the period covered by
                           such report (or in the case of a report on Form 8-K
                           or definitive proxy materials, as of the date on
                           which it was filed); and

                  -        no covered report omitted to state a material fact
                           necessary to make the statements in the covered
                           report, in light of the circumstances under which
                           they were made, not misleading as of the end of the
                           period covered by such report (or in the case of a
                           report on Form 8-K or definitive proxy materials, as
                           of the date on which it was filed).

         (2)      I have reviewed the contents of this statement with the
                  Comfort Systems USA, Inc, audit committee.

         (3)      In this statement under oath, each of the following, if filed
                  on or before the date of this statement, is a "covered
                  report":

                  -        Annual Report on Form 10-K for the fiscal year ended
                           December 31, 2001 of Comfort Systems USA, Inc.

                  -        all reports on Form 10-Q, all reports on Form 8-K and
                           all definitive proxy materials of Comfort Systems
                           USA, Inc. filed with the Commission subsequent to the
                           filing of the Form 10-K identified above; and

                  -        any amendments to any of the foregoing.



         /s/ William F. Murdy               Subscribed and sworn to
         -----------------------            before me this 13th day of
         William F. Murdy                   August 2002.
         August 13, 2002

                                            /s/ Julia A. Brown
                                            -------------------------------
                                            Notary Public

                                            My Commission Expires:
                                            July 24, 2006


                                      -5-

</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>4
<FILENAME>h99188exv99w2.txt
<DESCRIPTION>STATEMENT UNDER OATH OF PRINCIPAL FIN. OFFICER
<TEXT>
<PAGE>

                                                                    EXHIBIT 99.2


   STATEMENT UNDER OATH OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL
   OFFICER REGARDING FACTS AND CIRCUMSTANCES RELATING TO EXCHANGE ACT FILINGS

I, J. Gordon Beittenmiller, principal financial officer, state and attest that:

         (1)      to the best of my knowledge, based upon a review of the
                  covered reports of Comfort Systems USA, Inc., and, except as
                  corrected or supplemented in a subsequent covered report:

                  -        no covered report contained an untrue statement of a
                           material fact as of the end of the period covered by
                           such report (or in the case of a report on Form 8-K
                           or definitive proxy materials, as of the date on
                           which it was filed); and

                  -        no covered report omitted to state a material fact
                           necessary to make the statements in the covered
                           report, in light of the circumstances under which
                           they were made, not misleading as of the end of the
                           period covered by such report (or in the case of a
                           report on Form 8-K or definitive proxy materials, as
                           of the date on which it was filed).

         (2)      I have reviewed the contents of this statement with the
                  Comfort Systems USA, Inc. audit committee.

         (3)      In this statement under oath, each of the following, if filed
                  on or before the date of this statement, is a "covered
                  report":

                  -        Annual Report on Form 10-K for the fiscal year ended
                           December 31, 2001 of Comfort Systems USA, Inc.

                  -        all reports on Form 10-Q, all reports on Form 8-K and
                           all definitive proxy materials of Comfort Systems
                           USA, Inc. filed with the Commission subsequent to the
                           filing of the Form 10-K identified above; and

                  -        any amendments to any of the foregoing.



           /s/ J. Gordon Beittemiller        Subscribed and sworn to
           ---------------------------       before me this 13th day of
           J. Gordon Beittemiller            August 2002.
           August 13, 2002


                                             /s/ Julia A. Brown
                                             ------------------------------
                                             Notary Public

                                             My Commission Expires:
                                             July 24, 2006


                                      -6-

</TEXT>
</DOCUMENT>
</SUBMISSION>
