Comfort Systems USA Elects Diane Day Sanders to Board of Directors.

HOUSTON--(BUSINESS WIRE)--Aug. 19, 1999--

Comfort Systems USA, Inc. (NYSE:FIX), a leading provider of commercial/industrial heating, ventilation, air conditioning ("HVAC") and related services today announced that it has elected Diane Day Sanders, age 49, to serve on its Board of Directors. The appointment of a new outside director increases the size of Comfort Systems' Board to 17 members.

Ms. Sanders is currently Vice President and Treasurer of Sysco Corporation (NYSE: SYY), the largest foodservice marketing and distribution organization in North America, and is responsible for the Company's treasury, cash management, capital structure, investor relations and risk management activities. Ms. Sanders joined Sysco over 20 years ago as a member of the internal audit staff and assumed the additional responsibilities of Director of Internal Audit, Assistant Controller and Vice President as the Company grew from approximately $700 million in sales in 1977 to $17.4 billion in the fiscal year ended July 3, 1999. Prior to joining Sysco, Ms. Sanders began her career at Deloitte & Touche LLP in Houston. She is a certified public accountant and received her bachelor of science degree in accounting from Stephen F. Austin State University in Texas.

"Diane's experience at Sysco has given her firsthand knowledge of the opportunities and challenges of building a large national company through significant acquisition activity and strong customer relationships," said Fred Ferreira, Comfort Systems USA's Chairman and CEO. "Her active role in Sysco's growth and development will provide our Board with valuable insight as we seek to achieve the same kind of success in the commercial/industrial HVAC industry that Sysco has achieved in food service. We are pleased and honored that Diane has agreed to work with Comfort Systems USA and we look forward to her contributions."

Comfort Systems USA is a premier provider of business solutions addressing workplace comfort, environments, processes and energy services, with more than 115 locations in 80 cities around the nation. Comfort Systems USA has annualized revenues of approximately $1.3 billion and is based in Houston. For more information, visit the Company's web-site 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, risks associated with acquisitions and variations in stock prices, changes in government regulations, competition, and risks entailed in operations and growth of newly acquired businesses and other risks detailed in the Company's reports filed with the Securities and Exchange Commission.