Trane Technologies plc

Trane Technologies plc is a global climate innovator that designs, manufactures, sells, and services heating, ventilation, and air conditioning (HVAC) systems and transport refrigeration solutions through its Trane and Thermo King brands, generating $21.3 billion in net revenues in fiscal 2025. The company operates across approximately 100 countries through three reportable segments — Americas, EMEA, and Asia Pacific — and employs roughly 44,000 people from its Irish-domiciled headquarters.

This is a story about an industrial franchise riding an extraordinary demand wave while executing at a level that few multi-decade manufacturing businesses ever achieve. Trane Technologies' commercial HVAC business is booking orders at rates that have tripled its backlog in three years, driven by data center construction, building decarbonization mandates, and a replacement cycle that favors the most efficient equipment on the market. The file turns on a single question: how much of this demand is structural and durable, and how much is a cycle that will mean-revert — and what the market is already pricing for each.

The debate is not whether Trane Technologies is a great business — its returns on capital, cash generation, and competitive position make that case plainly. It is whether a 33-times-earnings multiple on peak-cycle earnings appropriately discounts the risk that applied HVAC orders, up 130% year-over-year in the most recent quarter, represent demand pulled forward rather than a permanently higher run-rate.