Comfort Systems USA, Inc. revenue for the last year amounted to 7.03 B USD, the most of which — 5.53 B USD — came from its highest performing source at the moment, Mechanical Services, the year earlier bringing 3.95 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought Comfort Systems USA, Inc. 7.03 B USD, and the year before that — 5.21 B USD.