Comfort Systems USA, Inc. revenue by segment FIX

Annual Quarterly

Comfort Systems USA, Inc. splits its revenue 2 ways in its filings. By operating segments, the largest line in Q3 of fiscal 2026, the quarter ended Sep 30, 2026 was New Construction at $2.9 billion, 76% of the total. By sales mix, the largest line in Q3 of fiscal 2026, the quarter ended Sep 30, 2026 was Mechanical at $2.6 billion, 69% of the total.

USD in millions. The percent under a figure is the change from the same quarter a year earlier.

Line	TTM Sep 30, 2026	Q3 FY2026 Sep 30, 2026	Q2 FY2026 Jun 30, 2026	Q1 FY2026 Mar 31, 2026	Q4 FY2025 Dec 31, 2025	Q3 FY2025 Sep 30, 2025	Q2 FY2025 Jun 30, 2025	Q1 FY2025 Mar 31, 2025	Q4 FY2024 Dec 31, 2024
Revenue	5,273	3,766	3,266	2,865	-4,624	2,451	2,173	1,831	1,868
Operating segments
New Construction	—	2,868 +79.6% share 76.2%	2,454 +95.3% share 75.1%	2,133 +100.3% share 74.5%	1,833 +73.9% share -39.6%	1,597 share 65.2%	1,257 share 57.8%	1,065 share 58.2%	1,054 share 56.4%
Existing Building Construction	—	528 +0.2% share 14.0%	483 -20.4% share 14.8%	437 -11.4% share 15.2%	491 -8.6% share -10.6%	527 share 21.5%	607 share 27.9%	493 share 26.9%	538 share 28.8%
Service Projects	—	191 +26.7% share 5.1%	145 -1.0% share 4.4%	138 +15.8% share 4.8%	153 +35.0% share -3.3%	150 share 6.1%	146 share 6.7%	119 share 6.5%	113 share 6.1%
Service Calls Maintenance And Monitoring	—	179 +1.8% share 4.8%	183 +12.5% share 5.6%	157 +1.8% share 5.5%	168 +3.7% share -3.6%	176 share 7.2%	163 share 7.5%	154 share 8.4%	162 share 8.7%
Sales mix
Mechanical	—	2,583 +42.7% share 68.6%	2,297 +40.2% share 70.3%	2,061 +47.0% share 71.9%	1,822 +25.5% share -39.4%	1,810 share 73.9%	1,639 share 75.4%	1,402 share 76.6%	1,452 share 77.8%
Electrical	—	1,183 +84.8% share 31.4%	969 +81.2% share 29.7%	805 +87.5% share 28.1%	824 +98.2% share -17.8%	641 share 26.1%	535 share 24.6%	429 share 23.4%	416 share 22.2%

How these figures are calculated

Quarterly columns are single-quarter amounts. When a 10-Q reports only a year-to-date total, as cash flow statements do, the quarter is that total minus the previous quarter's year-to-date total. The fourth quarter is the annual report's full year minus the first nine months. A column marked YTD is a year-to-date total, shown when the earlier report needed for the single quarter is missing. USD in millions. Each group is a separate split of total revenue, so the groups are not added together. Share of revenue is that line divided by total revenue. The first column adds the latest year-to-date segment amount to the last fiscal year and subtracts the year-ago year-to-date amount. More on our methodology.

Company profile

Industry: Electrical Work (SIC 1731)
Listed as: FIX (NYSE)
Fiscal year ends: December 31
Headquarters: Houston, TX
SEC filer status: Large accelerated filer
SEC CIK: 1035983
Former names: COMFORT SYSTEMS USA INC (until Oct 28, 2026)

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Source: SEC EDGAR filings. This is company-reported data, not investment advice.