As of January 2026 Comfort Systems USA has a market cap of โน3.356 Trillion. This makes Comfort Systems USA the world's 653th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Jan 14th, 2026 the market cap of Comfort Systems USA was reported to be: