Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Lane Brian E.
 2. Date of Event Requiring Statement (Month/Day/Year)
10/13/2008		 3. Issuer Name and Ticker or Trading Symbol
COMFORT SYSTEMS USA INC [FIX]
(Last)
(First)
(Middle)
C/O COMFORT SYSTEMS USA, INC., 777 POST OAK BLVD., SUITE 500		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Senior Vice President
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

HOUSTON, TX 77056		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 8,655 (1)
D
 
Common Stock 5,802 (2)
D
 
Common Stock 12,756 (3)
D
 
Common Stock 13,643 (3)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Option to Buy 11/19/2003 11/19/2013 Common Stock 3,750 $ 4.18 D  
Option to Buy 05/18/2005(4) 05/18/2015 Common Stock 10,000 $ 6.38 D  
Option to Buy 03/28/2007(5) 03/28/2017 Common Stock 12,039 $ 11.94 D  
Option to Buy 03/26/2008(5) 03/26/2018 Common Stock 11,369 $ 13.15 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Lane Brian E.
C/O COMFORT SYSTEMS USA, INC.
777 POST OAK BLVD., SUITE 500
HOUSTON, TX 77056		       Senior Vice President  

Signatures

/s/ Brian E. Lane 10/22/2008
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Restricted shares that vest over four (4) years in equal installments annually.
(2) Restricted shares that vests over three (3) years in equal installments annually.
(3) Restricted shares that are subject to performance vesting over three years in equal installments annually.
(4) Options vest in equal annual installments on each of the first four anniversaries of grant.
(5) Options vest in equal annual installments on each of the first three anniversaries of the grant.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

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