This presentation 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 future events 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, the use of incorrect estimates for bidding
a fixed-price contract, undertaking contractual commitments that exceed our labor resources, failing to perform
contractual obligations efficiently enough to maintain profitability; national or regional weakness in construction
activity and economic conditions, financial difficulties affecting projects, vendors, customers, or subcontractors,
difficulty in obtaining or increased costs associated with bonding and insurance, shortages of labor and
specialty building materials, retention of key management, our backlog failing to translate into actual revenue or
profits, errors in our percentage-of-completion method of accounting, the result of competition in our markets,
seasonal fluctuation 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 our reports filed with the Securities and Exchange Commission. A
further list and description of these risks, uncertainties and other factors are discussed under “Item 1A.
Company Risks Factors” in the Company’s Annual Report on
Form 10-K for the year ended December 31, 2008. These forward-looking statements speak only as of the
date of this filing. 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 our
expectations with regard thereto or any change in events, developments, conditions or circumstances on which
any such statement is based.
Safe Harbor Statement
