    <SEC-DOCUMENT>0001558370-17-002563-index.html : 20170410
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    <ACCEPTANCE-DATETIME>20170410161542
    ACCESSION NUMBER:		0001558370-17-002563
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		11
    CONFORMED PERIOD OF REPORT:	20170523
    FILED AS OF DATE:		20170410
    DATE AS OF CHANGE:		20170410
    EFFECTIVENESS DATE:		20170410

    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:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-13011
    		FILM NUMBER:		17753570

    	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
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>fix-20170523xdef14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: fix-20170523xdef14a.htm

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    <TEXT>
    Document 2 - file: fix20170523xdef14a001.jpg

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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: fix20170523xdef14a002.jpg

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    <TEXT>
    Document 4 - file: fix20170523xdef14a003.jpg

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    Document 5 - file: fix20170523xdef14a004.jpg

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    Document 6 - file: fix20170523xdef14a005.jpg

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    Document 7 - file: fix20170523xdef14a006.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 8 - file: fix20170523xdef14a007.jpg

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    Document 9 - file: fix20170523xdef14a008.gif

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    Document 10 - file: fix20170523xdef14a009.gif

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