--- title: "Lennox International: Competitors" description: "Lennox International 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/lennox-international/competitors/ source: "Swoopr Investment: https://www.getswoopr.com" --- # Lennox International: Competitors & Industry Structure ## Direct Answer SEC EDGAR classifies Lennox International under SIC code 3585 (Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip). Among Swoopr's S&P 500 Equal Weight companies, 4 others share that classification; by latest reported revenue, Lennox International ranks 3 of 5. A filing classification is a starting point: a company's real competitors depend on its segments, which its 10-K describes. ## How Does Lennox International Compare With Its Peers? | Company | Revenue (latest FY) | Revenue growth | Operating margin | Net margin | | --- | --- | --- | --- | --- | | [Johnson Controls (JCI)](https://www.getswoopr.com/stocks/companies/johnson-controls/) | $23.6 billion FY2025 | 2.8% | n/a | 13.9% | | [Carrier Global (CARR)](https://www.getswoopr.com/stocks/companies/carrier-global/) | $21.7 billion FY2025 | -3.3% | 10.0% | 6.8% | | **Lennox International (LII)** | $5.2 billion FY2025 | -2.7% | 20.0% | 15.5% | | [AAON Inc. (AAON)](https://www.getswoopr.com/stocks/companies/aaon-inc/) | $1.4 billion FY2025 | 20.1% | 10.1% | 7.5% | | [Tecogen Inc. (TGEN)](https://www.getswoopr.com/stocks/companies/tecogen-inc/) | $27 million FY2025 | 19.7% | -30.5% | -30.5% | 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 Lennox International and 3 peers: Carrier Global (CARR) 10.0%, Lennox International (LII) 20.0%, AAON Inc. (AAON) 10.1%, Tecogen Inc. (TGEN) -30.5%.](https://www.getswoopr.com/images/charts/lennox-international-competitors-peer-margins.webp) *Operating margin of Lennox International against companies sharing its SEC industry classification, from the table above. Select the chart to open it full size.* ## How Does Lennox International Rank Among All SEC Filers in Its Industry Code? 5 companies with annual reports in Swoopr's SEC dataset share SIC code 3585 (Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip), a wider group than the S&P 500 Equal Weight companies above. Ranks run from 1 (highest) and use each company's latest fiscal year, in U.S. dollars. | Measure | Lennox International | Median of filers | Rank | | --- | --- | --- | --- | | Revenue | $5.2 billion | $5.2 billion | 3 of 5 | | Revenue growth | -2.7% | 2.8% | 4 of 5 | | Net margin | 15.5% | 7.5% | 1 of 5 | A SIC code reflects the filer's main business as the SEC records it, so the group mixes companies of very different size; the median is a better guide than the average, and a rank near the top by revenue says nothing about quality. ## Where These Numbers Come From Every figure on this page is a value Lennox International reported in its own SEC filings, read from the SEC's XBRL data (accession 0001069202-26-000028 for fiscal year 2025). Ratios are computed from those reported values. Figures were retrieved on October 12, 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 Lennox International's competitors? Companies sharing Lennox International's SEC classification (SIC code 3585 (Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip)) include Johnson Controls (JCI), Carrier Global (CARR), AAON Inc. (AAON), Tecogen Inc. (TGEN). Its 10-K names the competitors it considers most relevant. ### How does Lennox International compare with its peers on margins? Lennox International's fiscal 2025 operating margin was 20.0%, against a peer median of 10.0%. ### 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. ### How does Lennox International rank among all companies in its SEC industry? Among 5 SEC filers under SIC code 3585, Lennox International ranks 3 by latest revenue. ## References - [SEC EDGAR: LENNOX INTERNATIONAL INC Form 10-K filed February 17, 2026](https://www.sec.gov/Archives/edgar/data/1069202/000106920226000028/lii-20251231.htm) - [SEC EDGAR: LENNOX INTERNATIONAL INC annual and quarterly filings](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1069202&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 - [Lennox International company dossier](https://www.getswoopr.com/stocks/companies/lennox-international/) - [Lennox International financial metrics](https://www.getswoopr.com/stocks/companies/lennox-international/metrics/) - [Lennox International financial risk indicators](https://www.getswoopr.com/stocks/companies/lennox-international/risks/) - [Lennox International peer comparison](https://www.getswoopr.com/stocks/companies/lennox-international/competitors/) - [Lennox International business model and revenue mix](https://www.getswoopr.com/stocks/companies/lennox-international/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. We do not provide personalized financial advice. See our [editorial policy](https://www.getswoopr.com/legal/editorial-policy/) and [corrections policy](https://www.getswoopr.com/legal/corrections-policy/).