News

Houston, TX – June 2, 2004 – Comfort Systems USA, Inc. (NYSE: FIX), a leading provider of commercial/industrial heating, ventilation and air conditioning (“HVAC”) services, today announced the promotion of Senior Vice President Thomas N. Tanner, 55, to Chief Operating Officer.

Prior to his appointment as Chief Operating Officer, Tom Tanner served at Comfort Systems USA as Senior Vice President – Operations, Vice President – East Region, and East Region Controller. In 2002 and 2003, he successfully led his region to win the Company's Region of the Year Award. Tom has extensive experience in the mechanical contracting industry, having worked as a part owner and Vice President – Chief Financial Officer of Comfort Systems USA (Syracuse), Inc. (Armani Plumbing & Mechanical, abj Fire Protection Co., and Woodcock & Associates), that was acquired by Comfort Systems USA in September 1998.

He has been actively involved in several industry-related organizations, including the American Subcontractors Association and the Contractors Financial Management Association (CFMA). Tom is a past President of the Central New York Subcontractors Association and he is the past President of the Empire State Subcontractors Association. Tom was one of three recipients of a 2001 Comfort Systems USA “Pinnacle Award” recognizing outstanding personal achievement. He holds a degree in Economics from Syracuse University.

Bill Murdy, Comfort Systems USA's Chairman and CEO said, “We are indeed very fortunate to have Tom as part of our senior management team. Tom has been a strong leader for the Company's operations. He will focus on strengthening our operational execution and increasing the amount of service, maintenance and retrofit work we do.”

Comfort Systems USA is a premier provider of business solutions addressing workplace comfort, environments, processes and energy services, with 63 locations in 51 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 risks detailed in the Company's reports filed with the Securities and Exchange Commission.