Press Release

Comfort Systems USA Energy Services - August 26, 2009

Contact: Andrea L. Gross
Phone: 860-285-8312

Comfort Systems USA Energy Services’ Timothy Staley Appointed as Regional Representative Southeast for Building Commissioning Association
Provides a two-way communication conduit between Association and Southeast Regional Chapter of Building Commissioning Association

LITTLE ROCK, Ark. –August 26, 2009–Timothy (Tim) Staley PE, CEM, LEED® AP, GBE, HFDP, Vice President of Comfort Systems USA Energy Services, a subsidiary of Comfort Systems USA (NYSE: FIX), the premier provider of business solutions addressing workplace comfort, has been appointed as the Regional Representative Southeast for the Building Commissioning Association (BCA).

The BCA is an international non-profit organization that serves as the recognized authority and resource on commissioning.

In his role as Regional Representative Southeast, Staley will act as a liaison between the Southeast Regional Chapter of the Building Commissioning Association (SERBCA) and the National Board of Directors. Formerly, Staley acted as a member of the governing board of SERBCA over the past 2 years.

“Tim will be a great addition to the board. A Regional Representative is an essential part of our association’s success at both National and Regional Chapter levels. Tim’s diligence, follow through and natural leadership ensure that his contributions to the board, and to the BCA as a whole, will be significant,” remarked Ed Faircloth, LEED® AP, President of the BCA.

Staley’s 20+ years in the commissioning field and commitment to SERBCA have made him an ideal candidate for the appointment.

Staley stated, “It is a real privilege to be a part of organization like the BCA that has such a dramatic impact on the commissioning industry. The SERBCA chapter is one of the largest chapters in the BCA and I have enjoyed being a part of the governing board of SERBCA over the last couple of years. It is a real honor to be appointed to the National BCA Board of Directors by the SERBCA Chapter as their liaison. I understand the responsibility that this position entails and it is my personal commitment to be persistent and serve to the best of my ability.”

About Comfort Systems USA
Comfort Systems USA(R) is a premier provider of business solutions addressing workplace comfort, with 74 locations in 59 cities around the nation. For more information, visit the Company's website at www.comfortsystemsusa.com.

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are based on the current plans and expectations of Comfort Systems USA, Inc. and involve risks and uncertainties that could cause actual future activities and results of operations to be materially different from those set forth in the forward-looking statements. Important factors that could cause actual results to differ include, among others, national or regional weakness in non-residential construction activity, difficulty in obtaining or increased costs associated with bonding, shortages of labor and specialty building materials, the use of incorrect estimates for bidding a fixed price contract, undertaking contractual commitments that exceed our labor resources, retention of key management, the Company's backlog failing to translate into actual revenue or profits, errors in the Company's percentage of completion method of accounting, the result of competition in the Company's markets, seasonal fluctuations in the demand for HVAC systems, the imposition of past and future liability from environmental, safety, and health regulations including the inherent risk associated with self-insurance, adverse litigation results and other risks detailed in the Company's reports filed with the Securities and Exchange Commission. Important factors that could cause actual results to differ are discussed under "Item 1A. Company Risk Factors" in the Company's Annual Report on Form 10-K for the year ended December 31, 2007. These forward-looking statements speak only as of the date of this release. Comfort Systems USA, Inc. expressly disclaims any obligation or undertaking to release publicly any updates or revisions to any forward-looking statement contained herein to reflect any change in Comfort Systems USA, Inc.'s expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based.
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