<SEC-DOCUMENT>0001104659-17-064046-index.html : 20171026
<SEC-HEADER>0001104659-17-064046.hdr.sgml : 20171026
<ACCEPTANCE-DATETIME>20171026164519
ACCESSION NUMBER:		0001104659-17-064046
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20171026
DATE AS OF CHANGE:		20171026
EFFECTIVENESS DATE:		20171026

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:		S-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-221142
		FILM NUMBER:		171156799

	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>S-8
<SEQUENCE>1
<FILENAME>a17-24467_1s8.htm
<DESCRIPTION>S-8
<TEXT>
Document 1 - file: a17-24467_1s8.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>a17-24467_1ex5d1.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: a17-24467_1ex5d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>a17-24467_1ex23d1.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 3 - file: a17-24467_1ex23d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g244671kei001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g244671kei001.jpg

</DOCUMENT>
</SEC-DOCUMENT>