As of December 2025 Comfort Systems USA has a market cap of HK$271.58 Billion. This makes Comfort Systems USA the world's 666th 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 Dec 8th, 2025 the market cap of Comfort Systems USA was reported to be: