Lennox International (LII) has a particularly circular HVAC map: Armstrong World Industries (AWI) appears on both sides of its disclosed relationship ledger. Lennox names AWI as a supplier, then says it distributes several Lennox brands through AWI’s traditional channel. The company also sells into a customer list that includes Carrier Global (CARR) and Trane Technologies (TT), two of the industry’s best-known names.
The supplier disclosure is broad, but the overlap with distribution is the sharpest feature. Lennox’s Allied Air business includes brands such as Armstrong Air, AirEase, Concord, Ducane, Allied, and MagicPak. The filing describes those products as sold through independent wholesale distributors, while separately listing AWI among Lennox’s suppliers.
"The Allied Air Enterprise business and brands (“Armstrong Air,” “AirEase,” “Concord,” “Ducane,” “Allied,” and “MagicPak”) include a full line of heating, ventilation and air conditioning products and are sold through independent wholesale distributors in the…"
Lennox International, Feb. 17, 2026 filing
In plain English, AWI is not just a name in the supply chain. Lennox also identifies it as part of the route to market for a group of its brands. The filing does not quantify the value of either relationship, so the map is clearer than the economic weight.
The customer side is a who’s-who of heating and cooling. Lennox’s Home Comfort Solutions disclosure lists Carrier, Trane, Paloma (PALO), DKILF (DKILF), Westinghouse Air Brake Technologies (WAB), and GBNXY (GBNXY). Carrier and Trane are the most recognizable names in that list, but Lennox provides no customer-by-customer revenue split in the supplied disclosure.
"Home Comfort Solutions Heating & Cooling Products - Carrier Global Corporation (Carrier, Bryant, Payne, Tempstar, Comfortmaker, Heil, Arcoaire, KeepRite, Day & Night); Trane Technologies plc (Trane, American Standard, Ameristar, Oxbox, RunTru); Paloma…"
Lennox International, Feb. 17, 2026 filing
That makes Lennox’s disclosed commercial web look less like a simple manufacturer-to-dealer chain and more like an industry network. Companies named as customers can also sit in the same broader HVAC competitive set. AAON (AAON), for example, names Lennox as a competitor in its own filing.
Lennox adds a more formal partnership through Ariston Group (ARSTY). The company says it owns 49.9% of a joint venture that will manufacture and distribute water heaters through Lennox Stores and its direct-to-dealer network. The arrangement puts a named partner, a near-half ownership stake, and Lennox’s own sales channels in one sentence.
"We own a 49.9% interest in a joint venture with Ariston Group that will manufacture and distribute water heaters through Lennox Stores and our direct-to-dealer network."
Lennox International, Feb. 17, 2026 filing
On the financing side, JPMorgan Chase (JPM) is the administrative agent for Lennox’s revolving credit facility. Emerson Electric (EMR) also appears in Lennox’s refrigeration-products supplier list, alongside Carrier and other industry names. The disclosed map therefore reaches from components and refrigeration equipment to distribution, customers, a manufacturing joint venture, competition, and the credit facility that sits underneath the business.
"Credit Agreement On May 9, 2025, we entered into an Amendment and Restatement Agreement (the "Credit Agreement") to our existing unsecured revolving credit facility with JPMorgan Chase Bank, N.A., as administrative agent, and the other lenders party thereto."
Lennox International, Apr. 29, 2026 filing
The result is a company tied to familiar HVAC names in several different ways, with AWI doing the most double-duty in the disclosed relationships.
These are relationships disclosed in SEC filings, mapped by jodie’s analytics. This is not investment advice.