    <SEC-DOCUMENT>0001104659-19-011994-index.html : 20190301
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    ACCESSION NUMBER:		0001104659-19-011994
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		22
    CONFORMED PERIOD OF REPORT:	20190301
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20190301
    DATE AS OF CHANGE:		20190301

    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:		19649636

    	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 1 - file: a19-5185_38k.htm

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    Document 3 - file: g51853mmi001.gif

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    Document 4 - file: g51853mmi002.gif

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    Document 5 - file: g51853mmi003.gif

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    Document 6 - file: g51853mmi004.gif

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    Document 7 - file: g51853mmi005.gif

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    Document 8 - file: g51853mmi006.gif

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    Document 9 - file: g51853mmi007.gif

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    Document 10 - file: g51853mmi008.gif

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    Document 11 - file: g51853mmi009.gif

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    Document 12 - file: g51853mmi010.gif

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    Document 13 - file: g51853mmi011.gif

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    Document 14 - file: g51853mmi012.gif

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    Document 15 - file: g51853mmi013.gif

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    Document 16 - file: g51853mmi014.gif

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    Document 17 - file: g51853mmi015.gif

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    Document 18 - file: g51853mmi016.gif

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    Document 19 - file: g51853mmi017.gif

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    Document 20 - file: g51853mmi018.gif

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    Document 21 - file: g51853mmi019.gif

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    Document 22 - file: g51853mmi020.gif

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