Item 8.01 Other Events

Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a press release of Comfort Systems USA, Inc., a Delaware corporation (the "Company") dated March 31, 2009 announcing that its Board of Directors (the "Board") has approved an amendment to the company's stock repurchase program to increase the shares authorized and remaining as available to purchase back up to 1,000,000 shares by authorizing the company to acquire up to 546,350 additional shares of its outstanding common stock. The company's existing stock repurchase program had previously authorized the repurchase of up to 3,852,659 shares of the company's outstanding common stock.

Through March 26, 2009, the Company had repurchased 3,399,009 shares of the company's common stock at an aggregate price of $38,501,648. This extension of the stock repurchase program will "top off" the plan and permit the Company to repurchase up to an additional 1,000,000 shares of its currently outstanding common stock beyond what had already been purchased as of March 26, 2009.

The share repurchases will be made from time to time at the Company's discretion in the open market or privately negotiated transactions as permitted by securities laws and other legal requirements, and subject to market conditions and other factors. The Company expects that the share repurchases will be financed with available cash. The Company's Board of Directors may modify, suspend, extend or terminate the program at any time.

Item 9.01 Financial Statements and Exhibits

The following exhibit is included herein:

Exhibit 99.1 Press release dated March 31, 2009 announcing the Board's approval of the amended stock repurchase program.