Comfort Systems USA vs MasTec
MasTec reported revenue of $14.3 billion in fiscal 2025, 1.6 times Comfort Systems USA's $9.1 billion in fiscal 2025. Comfort Systems USA's revenue grew 29.5% in its latest year, and MasTec's grew 16.2%. Free cash flow was $1.0 billion at Comfort Systems USA and $286 million at MasTec.
Side by side
| Comfort Systems USA | MasTec | |
|---|---|---|
| Latest fiscal year | FY2025, Dec 31, 2025 | FY2025, Dec 31, 2025 |
| Revenue | $9.1B | $14.3B |
| Revenue growth | 29.5% | 16.2% |
| Revenue growth a year, last 5 years | 26.1% | 17.7% |
| Gross margin | 24.1% | — |
| Operating margin | 14.4% | — |
| Net margin | 11.2% | 2.8% |
| Free cash flow | $1.0B | $286M |
| Free cash flow margin | 11.3% | 2.0% |
| Return on capital | 73.3% | 11.2% |
| Net debt to EBITDA | −0.6x | 1.7x |
| Dividends and buybacks | $285M | $77M |
| Change in diluted share count | −1.0% | −0.2% |
| Last close | $1,244.19 | $172.59 |
| P/E at the last close | 26.9× | 27.5× |
| Insider trades, last 12 months | sold $185.2 million | sold $6.3 million |
| Piotroski F-score | 7 of 9 | 7 of 8 |
Amounts in each company's own currency, US$ unless marked (a foreign company may report in another), each company's latest fiscal year from its 10-K, or 20-F or 40-F for a foreign company. Growth rates compare with the year before; the five-year rate is the average a year. Free cash flow is cash from operations minus capital spending; return on capital is after-tax operating income over the money invested in the business; P/E is the last close over the latest earnings per share. Banks are measured differently (return on equity, efficiency ratio), so some rows apply to one company only.
Ten years
Revenue
US$ billions, fiscal years
Comfort Systems USAMasTec
Operating margin
Percent of revenue
Comfort Systems USAMasTec
Free cash flow
US$ billions. Cash from operations minus capital expenditure.
Comfort Systems USAMasTec
Source: the companies' Form 10-K filings, from SEC EDGAR, and the last close. For information only, not investment advice: the figures describe results, not which company is the better investment. The Filing Desk is not affiliated with either company. Full figures on the Comfort Systems USA and MasTec pages.