News

Houston, TX – October 1, 2004 – Comfort Systems USA, Inc. (NYSE: FIX), a leading provider of commercial/industrial heating, ventilation and air conditioning (“HVAC”) services, announced that it has scheduled its quarterly conference call for Wednesday, November 3, 2004 at 10:00 a.m. Central Time to discuss third quarter 2004 financial results. The results will be released after the market closes on Tuesday, November 2, 2004.

To participate in the call, dial 1-712-271-3364 ten minutes before the conference call begins and ask for the Comfort Systems USA conference. A replay of the entire call will be available until 6:00 p.m. Central Time, Wednesday, November 10, 2004 by calling 1-402-998- 0719.

Comfort Systems USA is a premier provider of business solutions addressing workplace comfort, with more than 59 locations in 48 cities around the nation. For more information, visit the Company's website at www.comfortsystemsusa.com.

Certain statements and answers to questions during the call may contain 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.