<SEC-DOCUMENT>0001558370-20-003778-index.html : 20200409
<SEC-HEADER>0001558370-20-003778.hdr.sgml : 20200409
<ACCEPTANCE-DATETIME>20200409171437
ACCESSION NUMBER:		0001558370-20-003778
CONFORMED SUBMISSION TYPE:	ARS
PUBLIC DOCUMENT COUNT:		18
CONFORMED PERIOD OF REPORT:	20191231
FILED AS OF DATE:		20200409
DATE AS OF CHANGE:		20200409
EFFECTIVENESS DATE:		20200409

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:		ARS
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13011
		FILM NUMBER:		20785310

	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>ARS
<SEQUENCE>1
<FILENAME>ARS.htm
<TEXT>
Document 1 - file: ARS.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>correspg001.jpg
<TEXT>
Document 2 - file: correspg001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>correspg002.jpg
<TEXT>
Document 3 - file: correspg002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>correspg003.jpg
<TEXT>
Document 4 - file: correspg003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>correspg004.jpg
<TEXT>
Document 5 - file: correspg004.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>correspg005.jpg
<TEXT>
Document 6 - file: correspg005.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>correspg006.jpg
<TEXT>
Document 7 - file: correspg006.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>correspg007.jpg
<TEXT>
Document 8 - file: correspg007.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>correspg008.jpg
<TEXT>
Document 9 - file: correspg008.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>correspg009.jpg
<TEXT>
Document 10 - file: correspg009.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>correspg010.jpg
<TEXT>
Document 11 - file: correspg010.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>correspg011.jpg
<TEXT>
Document 12 - file: correspg011.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>correspg012.jpg
<TEXT>
Document 13 - file: correspg012.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>correspg013.jpg
<TEXT>
Document 14 - file: correspg013.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>correspg014.jpg
<TEXT>
Document 15 - file: correspg014.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>correspg015.jpg
<TEXT>
Document 16 - file: correspg015.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>correspg016.jpg
<TEXT>
Document 17 - file: correspg016.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>18
<FILENAME>correspg017.jpg
<TEXT>
Document 18 - file: correspg017.jpg

</DOCUMENT>
</SEC-DOCUMENT>