Lennox International Inc (NYSE: LII) is a heating, ventilation, and air conditioning (HVAC) company that designs, manufactures, and sells climate control equipment for residential and commercial applications. Revenue comes from transactional sales of HVAC equipment, replacement parts, supplies, and commercial installation and service contracts. The company operates through two segments: Home Comfort Solutions, which generated $3,343.4M in net sales in FY2025, and Building Climate Solutions, which generated $1,851.9M, for total net sales of $5,195.3M (FY2025, per 10-K filed 2026-02-17). Home Comfort Solutions covers residential furnaces, air conditioners, heat pumps, and indoor air quality products sold under brands including Lennox, Armstrong Air, Ducane, AirEase, and Concord. Building Climate Solutions covers commercial unitary and applied HVAC systems, refrigeration equipment, and commercial service under brands including Lennox, Heatcraft Worldwide Refrigeration, Bohn, and Allied Commercial.

Revenue model

Transactional sales of manufactured HVAC equipment, replacement parts, and supplies, plus commercial installation and service revenue within the Building Climate Solutions segment. No subscription or licensing model is disclosed in the filing excerpts.

Products and services

Residential: furnaces, air conditioners, heat pumps, packaged heating and cooling systems, indoor air quality equipment, comfort controls, replacement parts (brands: Lennox, Dave Lennox Signature Collection, Armstrong Air, Ducane, AirEase, Concord, MagicPak, ADP Advanced Distributor Products, Allied, Supco, iComfort, Healthy Climate). Commercial: unitary and applied HVAC systems, variable refrigerant flow products, controls, condensing units, unit coolers, fluid coolers, air handlers, process chillers, compressorized racks, curbs and diffusers, HVAC recycling and salvage, replacement parts (brands: Lennox, Model L, CORE, Enlight, Energence, Prodigy, Lennox VRF, Lennox National Account Services, Allied Commercial, Heatcraft Worldwide Refrigeration, Bohn, MAGNA, Larkin, Climate Control, Chandler Refrigeration, IntelliGen, Duro Dyne, AES Industries, AES Mechanical, AES Recycle).

Customers and end markets

Residential homeowners and contractors served through the Home Comfort Solutions segment. Commercial building owners, contractors, and national accounts served through the Building Climate Solutions segment, which includes commercial refrigeration end markets via Heatcraft Worldwide Refrigeration brands.

Value-chain role

Manufacturer of HVAC and refrigeration equipment; also provides downstream commercial installation and service through the Building Climate Solutions segment.

Geographic exposure

Not specified in the filing excerpts provided.

Source: SEC 10-K, filed 2026-02-17

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