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                                              OMB Number:             3235-0145
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                                 UNITED STATES
                       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, $0.01 par value
- -------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    199908104
                  --------------------------------------------
                                 (CUSIP Number)




                                  June 10, 2005
- -------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)


Check the  appropriate box to designate the rule pursuant to which this Schedule
is filed:

[ ] Rule 13d-1(b)

[X] Rule 13d-1(c)

[ ] Rule 13d-1(d)


*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).



Persons who respond to the collection of information  contained in this form are
not required to respond  unless the form displays a currently  valid OMB control
number.

SEC 1745 (12-02)



                                Page 1 of 7 pages

- ----------------------- CUSIP No. 199908104 13G - ----------------------- - ------------------------------------------------------------------------------ 1. Name of Reporting Person I.R.S. Identification No. of above Person Goldman Sachs Asset Management, L.P. - ------------------------------------------------------------------------------ 2. Check the Appropriate Box if a Member of a Group (a) [_] (b) [_] - ------------------------------------------------------------------------------ 3. SEC Use Only - ------------------------------------------------------------------------------ 4. Citizenship or Place of Organization Delaware - ------------------------------------------------------------------------------ 5. Sole Voting Power Number of 1,685,121 Shares ---------------------------------------------------------- 6. Shared Voting Power Beneficially 0 Owned by ---------------------------------------------------------- Each 7. Sole Dispositive Power Reporting 1,975,996 Person ---------------------------------------------------------- 8. Shared Dispositive Power With: 0 - ------------------------------------------------------------------------------ 9. Aggregate Amount Beneficially Owned by Each Reporting Person 1,975,996 - ------------------------------------------------------------------------------ 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares [_] - ------------------------------------------------------------------------------ 11. Percent of Class Represented by Amount in Row (9) 5.0% - ------------------------------------------------------------------------------ 12. Type of Reporting Person IA - ------------------------------------------------------------------------------ Page 2 of 7 pages

Item 1(a). Name of Issuer: Comfort Systems USA, Inc. Item 1(b). Address of Issuer's Principal Executive Offices: 777 Post Oak Boulevard Suite 500 Houston, Texas 77056 Item 2(a). Name of Persons Filing: Goldman Sachs Asset Management, L.P. Item 2(b). Address of Principal Business Office or, if none, Residence: 32 Old Slip New York, NY 10005 Item 2(c). Citizenship: Goldman Sachs Asset Management, L.P. - Delaware Item 2(d). Title of Class of Securities: Common Stock, $0.01 par value Item 2(e). CUSIP Number: 199908104 Item 3. If this statement is filed pursuant to Rules 13d-1(b) or 13d-2(b) or (c), check whether the person filing is a : (a).[_] Broker or dealer registered under Section 15 of the Act (15 U.S.C. 78o). (b).[_] Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c). (c).[_] Insurance company as defined in Section 3(a)(19) of the Act (15 U.S.C. 78c). (d).[_] Investment company registered under Section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8). (e).[_] An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E); (f).[_] An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F); (g).[_] A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G); (h).[_] A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813); (i).[_] A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3); (j).[_] Group, in accordance with Rule 13d-1(b)(1)(ii)(J). If this statement is filed pursuant to Rule 13d-1(c), check this box [X]. Page 3 of 7 pages

Item 4. Ownership. * (a). Amount beneficially owned: See the response(s) to Item 9 on the attached cover page(s). (b). Percent of Class: See the response(s) to Item 11 on the attached cover page(s). (c). Number of shares as to which such person has: (i). Sole power to vote or to direct the vote: See the response(s) to Item 5 on the attached cover page(s). (ii). Shared power to vote or to direct the vote: See the response(s) to Item 6 on the attached cover page(s). (iii). Sole power to dispose or to direct the disposition of: See the response(s) to Item 7 on the attached cover page(s). (iv). Shared power to dispose or to direct the disposition of: See the response(s) to Item 8 on the attached cover page(s). Item 5. Ownership of Five Percent or Less of a Class. Not Applicable Item 6. Ownership of More than Five Percent on Behalf of Another Person. Not Applicable Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company. Not Applicable Item 8. Identification and Classification of Members of the Group. Not Applicable Item 9. Notice of Dissolution of Group. Not Applicable Item 10. Certification. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. - -------------------------- * In accordance with Securities and Exchange Commission ("SEC") Release No. 34-39538 (January 12, 1998), this filing reflects the securities beneficially owned by Goldman Sachs Asset Management, L.P. ("GSAM LP"). GSAM LP, an investment advisor, disclaims beneficial ownership of any securities managed, on GSAM LP's behalf, by third parties. Page 4 of 7 pages

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. Date: June 20, 2005 GOLDMAN SACHS ASSET MANAGEMENT, L.P. By: /s/ Ted Chang ---------------------------------------- Name: Ted Chang Title: Attorney-in-fact Page 5 of 7 pages

INDEX TO EXHIBITS Exhibit No. Exhibit - ----------- ------- 99.1 Power of Attorney, dated November 19th, 2003, relating to Goldman Sachs Asset Management, L.P. Page 6 of 7 pages

Exhibit (99.1) POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS that GOLDMAN SACHS ASSET MANAGEMENT, L.P. (the "Company") does hereby make, constitute and appoint each of Roger S. Begelman, Edward T. Joel, Saskia Brookfield Martin and Ted Chang, (and any other employee of The Goldman Sachs Group, Inc. or one of its affiliates designated in writing by one of the attorneys-in-fact), acting individually, its true and lawful attorney, to execute and deliver in its name and on its behalf whether the Company is acting individually or as representative of others, any and all filings required to be made by the Company under the Securities Exchange Act of 1934, (as amended, the "Act"), with respect to securities which may be deemed to be beneficially owned by the Company under the Act, giving and granting unto each said attorney-in-fact power and authority to act in the premises as fully and to all intents and purposes as the Company might or could do if personally present by one of its authorized signatories, hereby ratifying and confirming all that said attorney-in-fact shall lawfully do or cause to be done by virtue hereof. THIS POWER OF ATTORNEY shall remain in full force and effect until either revoked in writing by the undersigned or until such time as the person or persons to whom power of attorney has been hereby granted cease(s) to be an employee of The Goldman Sachs Group, Inc. or one of its affiliates. IN WITNESS WHEREOF, the undersigned has duly subscribed these presents as of November 19th, 2003. GOLDMAN SACHS ASSET MANAGEMENT, L.P. By:/s/ Howard Surloff - ---------------------------- Name: Howard Surloff Title: Managing Director Page 7 of 7 pages