Item 6. Exhibits

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Item 6. Exhibits


		Incorporated by Referenceto the Exhibit Indicated Belowand to the Filing with theCommission Indicated Below
ExhibitNumber	Description of Exhibits	ExhibitNumber	Filing orFile Number
3.1	Second Amended and Restated Certificate of Incorporation of the Registrant	3.1	333-24021
3.2	Certificate of Amendment dated May 21, 1998	3.2	1998 Form 10-K
3.3	Certificate of Amendment dated July 9, 2003	3.3	2003 Form 10-K
3.4	Certificate of Amendment dated May 20, 2016	3.1	May 20, 2016 Form 8-K
3.5	Amended and Restated Bylaws of Comfort Systems USA, Inc.	3.1	March 25, 2016 Form 8-K
10.1	Fourth Amended and Restated Credit Agreement dated as of August 27, 2025 by and among Comfort Systems USA, Inc., as Borrower, the Lenders listed on the signature pages thereof, and Wells Fargo Bank, National Association, as Agent for the Lenders	10.1	September 2, 2025 Form 8-K
31.1*	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2*	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1**	Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2**	Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS*	Inline XBRL Instance Document
101.SCH*	Inline XBRL Taxonomy Extension Schema Document
101.CAL*	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF*	Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB*	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE*	Inline XBRL Taxonomy Extension Presentation Linkbase
104	Cover Page Interactive Data File (the cover page XBRL tags are embedded in the Inline XBRL document)

*** Filed herewith.**

**** Furnished herewith.**

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 thereunto duly authorized.


	Comfort Systems USA, Inc.

October 23, 2025	By:	/s/ Brian E. Lane
		Brian E. Lane
		President, Chief Executive Officer and Director

October 23, 2025	By:	/s/ William George
		William George
		Executive Vice President and Chief Financial Officer

October 23, 2025	By:	/s/ Julie S. Shaeff
		Julie S. Shaeff
		Senior Vice President and Chief Accounting Officer

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