Lennox International Inc. LII

What this company does

Lennox International Inc. designs, manufactures and markets a broad range of products for the heating, ventilation, air conditioning and refrigeration (HVACR) markets, sold through multiple distribution channels under various brand names. As of December 31, 2025, it employed approximately 12,900 people, primarily in the U.S. (approximately 8,500 employees) and Mexico (approximately 3,200 employees). Its two business segments are Home Comfort Solutions and Building Climate Solutions. The Home Comfort Solutions segment covers furnaces, air conditioners, heat pumps, packaged heating and cooling systems, indoor air quality equipment, comfort control products, and replacement parts and supplies, sold under brand names including Lennox, Dave Lennox Signature Collection, Armstrong Air, Ducane, and Allied, and generated $3,343.4 million in net sales in 2025. The Building Climate Solutions segment covers unitary heating and air conditioning equipment, applied systems, controls, installation and service of commercial heating and cooling equipment, variable refrigerant flow commercial products, and related replacement parts and supplies, sold under brand names including Lennox, Model L, CORE, and Heatcraft Worldwide Refrigeration, and generated $1,851.9 million in net sales in 2025. The company was founded in 1895 in Marshalltown, Iowa, by Dave Lennox, the owner of a machine repair business for railroads, who designed and patented a riveted steel coal-fired furnace.

Written from the business description in LENNOX INTERNATIONAL INC's annual report to the U.S. Securities and Exchange Commission, filed 17 February 2026. Every sentence was checked against that document before publication.