Munger Mode rating: 3 out of 5 — Hold. Our own rating from the research report below, on business quality first: moat durability and management, with price separating the top three.
Written in the voice of Warren Buffett and Charlie Munger, from the company's Form 10-Q for the quarter ended June 30, 2026, its recent earnings releases, and current market data. We'll say it plainly up front: Comfort Systems is one of the finest operating stories in American industry over the past decade, run by honest, able people who allocate capital the way we wish more managers would. It is also a mechanical and electrical contractor trading at roughly 44 times trailing earnings — earnings that sit atop the greatest nonresidential construction boom of our lifetimes, with nearly 59% of revenue now coming from technology customers building data centers. A wonderful operator in a historically ordinary industry, priced as if boom-level margins are a birthright. We would not sell it if we owned it at a low basis; we would not buy it here. Three stars.
Recent filings analysed: 8-K (2026-08-03), 10-Q (2026-07-23), 8-K (2026-07-23), 8-K (2026-06-22).
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