CluenexComfort Systems USA FIX
Comfort Systems USA scores excellent on business quality (8.5 of 10). Here is why, in plain words, and what our sealed record shows.
Why it matters
- What Comfort Systems USA does
Comfort Systems USA installs and maintains mechanical, electrical, and plumbing systems. Building owners pay them for complex commercial, industrial, and institutional construction projects. Revenue surged to $11.2 billion recently, driven by massive data center and industrial facility demand.
- What it does best
It converts earnings to cash at an elite level, producing $2.1 billion in free cash flow. This cash engine dwarfs peers like PWR at $69M and EME at $195M, funding aggressive growth without borrowing.
- The main risk
Valuation is aggressively stretched against an intrinsic value of $626 while trading near $1,728. If high-margin data center construction slows, the price leaves zero room for error.
Quality, check by check
Scored against its own industry, from company filings.
Operating margin reached 16.5% and FCF margin hit 87th percentile in its sector. Scale expands these margins as larger projects absorb overhead.
ROE sits at 53.5%, placing it in the top decile of its sector at 89th percentile. Scale and specialized labor lock out regional rivals.
Revenue grew 29.5% to $11.2B, sharply accelerating from past years like $7.0B in 2024. Data center demand fuels this unstoppable expansion.
Debt is tiny with a debt-to-equity ratio of 0.06 and net cash of $837 million. Free cash flow doubled to $2.1B, making the balance sheet bulletproof.
Insiders
Executives and directors, from SEC Form 4 filings we read ourselves. Open market trades only; grants, option exercises and pre-planned sales left out.
3 sold $43.2M outside pre-planned sales.
Our sealed record on FIX
Verdicts appear here 30 days after we publish them; members see today's. Each one is in the nightly ledger, fingerprinted the night it was made.
The first sealed verdicts appear here on Oct 11, 2026.
Questions
Comfort Systems USA scores excellent on the Cluenex quality check (8.5 of 10), measured against its own industry. Profitability is strong, moat strong, growth fast and financial health strong.
In the last 90 days of SEC Form 4 filings: 3 sold $43.2M outside pre-planned sales.
Oct 22, 2026.
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Cite this page: Cluenex, “Comfort Systems USA (FIX)”, https://cluenex.com/stocks/fix/, data as of Oct 10, 2026.