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Comfort Systems USA vs IES Holdings: FIX and IESC compared
Comfort Systems USA is the larger company: $3.8B of revenue in its latest quarter (Q3 2026) against $1.2B for IES Holdings (Q3 FY26). Comfort Systems USA is growing faster (+54% against +40% a year earlier). Comfort Systems USA is more profitable, with an operating margin of 16.6% against 14.4%.
Where the money goes: FIX and IESC
Comfort Systems USA (FIX) · Q3 2026
Comfort Systems USA, Q3 2026: revenue $3.8B (+54% year over year), operating margin 16.6%, net earnings $489M, operating cash flow $1.0B. The chart follows the revenue to costs, profit and cash.
IES Holdings (IESC) · Q3 FY26
IES Holdings, Q3 FY26: revenue $1.2B (+40% year over year), operating margin 14.4%, net earnings $153M, operating cash flow $108M. The chart follows the revenue to costs, profit and cash.
| Comfort Systems USA (FIX) | IES Holdings (IESC) | |
|---|---|---|
| Latest quarter | Q3 2026 | Q3 FY26 |
| Revenue | $3.8B | $1.2B |
| Revenue growth, Y/Y | +54% | +40% |
| Gross margin | 24.8% | 27.4% |
| Operating margin | 16.6% | 14.4% |
| Net earnings | $489M | $153M |
| Net margin | 13.0% | 12.3% |
| Operating cash flow | $1.0B | $108M |
| Free cash flow | $806M | $63.8M |
| Market value | $33.9B | $3.2B |
| P/E | 20.8× | 7.3× |
| Analysts’ mean target | $1820.56 | $440.00 |
Where the revenue comes from
Comfort Systems USA
- New construction: $2.9B (76%)
- Existing building construction: $528M (14%)
- Service projects: $191M (5%)
- Service calls, maintenance, and monitoring: $179M (5%)
IES Holdings
- Communications: $453M (36%)
- Residential: $324M (26%)
- Commercial and Industrial: $241M (19%)
- Infrastructure Solutions: $224M (18%)
Questions
Which is bigger, Comfort Systems USA or IES Holdings?
Comfort Systems USA is the larger company: $3.8B of revenue in its latest quarter (Q3 2026) against $1.2B for IES Holdings (Q3 FY26).
Is Comfort Systems USA or IES Holdings growing faster?
Comfort Systems USA is growing faster (+54% against +40% a year earlier).
Which is more profitable, Comfort Systems USA or IES Holdings?
Comfort Systems USA is more profitable, with an operating margin of 16.6% against 14.4%.
More: Comfort Systems USA earnings · how Comfort Systems USA makes money · IES Holdings earnings · how IES Holdings makes money
From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Oct 22, 2026; 10-Q filed Jul 31, 2026). Fiscal quarters can end on different dates. Not investment advice.