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

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-

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-

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-

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-

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-