--- title: "Comfort Systems USA: Competitors" description: "Comfort Systems USA compared with companies that share its SEC industry classification: revenue, growth and margins from SEC filings, and how peers are chosen." canonical: https://www.getswoopr.com/stocks/companies/comfort-systems-usa/competitors/ source: "Swoopr Investment: https://www.getswoopr.com" --- # Comfort Systems USA: Competitors & Industry Structure ## Direct Answer SEC EDGAR classifies Comfort Systems USA under SIC code 1731 (Electrical Work). Among Swoopr's S&P 500 Equal Weight companies, 3 others share that classification; by latest reported revenue, Comfort Systems USA ranks 4 of 4. A filing classification is a starting point: a company's real competitors depend on its segments, which its 10-K describes. ## How Does Comfort Systems USA Compare With Its Peers? | Company | Revenue (latest FY) | Revenue growth | Operating margin | Net margin | | --- | --- | --- | --- | --- | | [Quanta Services (PWR)](https://www.getswoopr.com/stocks/companies/quanta-services/) | $28.5 billion FY2025 | 20.3% | 5.7% | 3.7% | | [Emcor (EME)](https://www.getswoopr.com/stocks/companies/emcor/) | $17.0 billion FY2025 | 16.6% | 10.1% | 7.5% | | [IES Holdings Inc. (IESC)](https://www.getswoopr.com/stocks/companies/ies-holdings-inc/) | $3.4 billion FY2025 | 16.9% | 11.4% | 9.1% | | **Comfort Systems USA (FIX)** | $1.8 billion FY2025 | -73.9% | 11.4% | 55.8% | Revenue growth compares each company's latest fiscal year with the one before. Fiscal years do not always end on the same date, so treat close comparisons with care. ![Bar chart of operating margin for Comfort Systems USA and 3 peers: Quanta Services (PWR) 5.7%, Emcor (EME) 10.1%, IES Holdings Inc. (IESC) 11.4%, Comfort Systems USA (FIX) 11.4%.](https://www.getswoopr.com/images/charts/comfort-systems-usa-competitors-peer-margins.webp) *Operating margin of Comfort Systems USA against companies sharing its SEC industry classification, from the table above. Select the chart to open it full size.* ## Where These Numbers Come From Every figure on this page is a value Comfort Systems USA reported in its own SEC filings, read from the SEC's XBRL data (accession 0001104659-26-047689 for fiscal year 2025). Ratios are computed from those reported values. Figures were retrieved on October 7, 2026; a later amendment or a new annual report can change them, and the filing itself always takes precedence over this summary. Each fiscal year is labeled by the calendar year in which it ended, so a company that names the same period differently in its own filings (many retailers whose year ends in January) may use another label. A year is left out of the table when the SEC data set holds no value for it. A figure shown as "Not reported" means the company did not file a value under the standard tag Swoopr reads, not that the amount was zero. This page is educational and describes reported history only; it is not a forecast or a recommendation. ## Frequently Asked Questions ### Who are Comfort Systems USA's competitors? Companies sharing Comfort Systems USA's SEC classification (SIC code 1731 (Electrical Work)) include Quanta Services (PWR), Emcor (EME), IES Holdings Inc. (IESC). Its 10-K names the competitors it considers most relevant. ### How does Comfort Systems USA compare with its peers on margins? Comfort Systems USA's fiscal 2025 operating margin was 11.4%, against a peer median of 10.1%. ### How are these peers chosen? By the SEC Standard Industrial Classification code each company files under, within Swoopr's S&P 500 Equal Weight company set, falling back to the two-digit major group when fewer than two companies share the exact code. Classification codes are broad, so read the peer list as a screen, not a verdict. ## References - [SEC EDGAR: COMFORT SYSTEMS USA INC Form 10-K filed February 19, 2026](https://www.sec.gov/Archives/edgar/data/1035983/000110465926017530/fix-20251231x10k.htm) - [SEC EDGAR: COMFORT SYSTEMS USA INC annual and quarterly filings](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1035983&type=10-K) - [SEC: EDGAR application programming interfaces (XBRL frames and submissions data)](https://www.sec.gov/search-filings/edgar-application-programming-interfaces) ## Related Pages - [Comfort Systems USA company dossier](https://www.getswoopr.com/stocks/companies/comfort-systems-usa/) - [Comfort Systems USA financial metrics](https://www.getswoopr.com/stocks/companies/comfort-systems-usa/metrics/) - [Comfort Systems USA financial risk indicators](https://www.getswoopr.com/stocks/companies/comfort-systems-usa/risks/) - [Comfort Systems USA peer comparison](https://www.getswoopr.com/stocks/companies/comfort-systems-usa/competitors/) - [Comfort Systems USA business model and revenue mix](https://www.getswoopr.com/stocks/companies/comfort-systems-usa/business-model/) - [Fundamental analysis guides](https://www.getswoopr.com/learn/fundamental-analysis/) **[Swoopr Editorial Team](https://www.getswoopr.com/authors/swoopr-editorial-team/)** Swoopr's editorial team produces independent investment education content reviewed for accuracy and clarity. 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