SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. ...)* Comfort Systems USA, Inc. (Name of Issuer) COMMON STOCK $.01 PAR VALUE PER SHARE (Title of Class of Securities) 199908 10 4 (CUSIP Number) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).CUSIP NO. 437881 10 5 13G Page 2 of 6 Pages 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON ROBERT J. POWERS 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (A) NONE (B) 3 SEC USE ONLY 4 CITIZENSHIP OR PLACE OF ORGANIZATION UNITED STATES OF AMERICA 5 SOLE VOTING POWER NUMBER OF SHARES 1,461,915 BENEFICIALLY OWNED BY 6 SHARED VOTING POWER EACH REPORTING 0 PERSON 7 SOLE DISPOSITIVE POWER WITH 1,461,915 8 SHARED DISPOSITIVE POWER 0 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,461,915 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.5% 12 TYPE OF REPORTING PERSON* IN Page 2 of 6 ITEM 1(A) The name of the issuer is Comfort Systems USA, Inc. ("Comfort"). ITEM 1(B) The principal executive office of Comfort is Three Riverway, Suite 200, Houston, Texas 77056. ITEM 2(A) The reporting person is Robert J. Powers. ITEM 2(B) The address of Robert J. Powers is Quality Air Conditioning, 3395 Kraft Avenue, SE, Grand Rapids, Michigan 49512. ITEM 2(C) Robert J. Powers is a citizen of the United States of America. ITEM 2(D) The class of securities of Comfort owned beneficially by Robert J. Powers is common stock, $.01 par value (the "Common Stock"). ITEM 2(E) CUSIP Number: 199908 10 4 ITEM 3 Not applicable ITEM 4 (a) The amount of securities beneficially owned by Robert J. Powers is 1,461,915 shares of Common Stock. (b) The percent of the class of Common Stock beneficially owned by Robert J. Powers is 5.5%. (c) Robert J. Powers has the sole power to vote or to direct the vote of 1,461,915 shares of the Common Stock and the sole power to dispose or to direct the disposition of 1,461,915 shares of the Common Stock. Page 3 of 6 ITEM 5 Not applicable ITEM 6 Not applicable ITEM 7 Not applicable ITEM 8 Not applicable ITEM 9 Not applicable ITEM 10 Not applicable Page 4 of 6 SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. 2/13/98 (Date) /S/ ROBERT J. POWERS (Signature) ROBERT J. POWERS (Name/Title) Page 5 of 6