    <SEC-DOCUMENT>0001104659-18-011703-index.html : 20180223
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    ACCESSION NUMBER:		0001104659-18-011703
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		23
    CONFORMED PERIOD OF REPORT:	20180223
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20180223
    DATE AS OF CHANGE:		20180223

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			COMFORT SYSTEMS USA INC
    		CENTRAL INDEX KEY:			0001035983
    		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRICAL WORK [1731]
    		IRS NUMBER:				760526487
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-13011
    		FILM NUMBER:		18636693

    	BUSINESS ADDRESS:
    		STREET 1:		675 BERING DRIVE
    		STREET 2:		SUITE 400
    		CITY:			HOUSTON
    		STATE:			TX
    		ZIP:			77057
    		BUSINESS PHONE:		7138309600

    	MAIL ADDRESS:
    		STREET 1:		675 BERING DRIVE
    		STREET 2:		SUITE 400
    		CITY:			HOUSTON
    		STATE:			TX
    		ZIP:			77057
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    Document 3 - file: g67411mmi001.gif

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    Document 4 - file: g67411mmi002.gif

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    Document 5 - file: g67411mmi003.gif

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    Document 6 - file: g67411mmi004.gif

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    Document 7 - file: g67411mmi005.gif

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    Document 8 - file: g67411mmi006.gif

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    Document 9 - file: g67411mmi007.gif

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    Document 10 - file: g67411mmi008.gif

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    Document 11 - file: g67411mmi009.gif

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    Document 12 - file: g67411mmi010.gif

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    Document 13 - file: g67411mmi011.gif

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    Document 14 - file: g67411mmi012.gif

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    Document 16 - file: g67411mmi014.gif

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    Document 17 - file: g67411mmi015.gif

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    Document 18 - file: g67411mmi016.gif

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    Document 19 - file: g67411mmi017.gif

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    Document 20 - file: g67411mmi018.gif

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    Document 21 - file: g67411mmi019.gif

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    Document 22 - file: g67411mmi020.gif

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