Carrier Global Corporation

Carrier Global Corporation is an American manufacturer of heating, ventilation, and air conditioning (HVAC) equipment, refrigeration systems, and building energy management solutions, generating $21.75 billion in revenue in fiscal 2025. Spun from United Technologies Corporation in April 2020, the company has since transformed itself through a series of divestitures and the €12 billion acquisition of Viessmann Climate Solutions, emerging as a pure-play climate and energy solutions provider with a portfolio spanning residential and commercial HVAC, transport refrigeration, aftermarket services, and an expanding data center cooling business.

This is a story about a company navigating a profound portfolio transformation while its core residential end-market cycles through one of the deepest corrections since the global financial crisis. Carrier enters mid-2026 as a more focused business than it was at spin — one with a growing commercial HVAC franchise powered by data center demand and a durable aftermarket annuity — but also one carrying the debt load from the Viessmann acquisition at a moment when its highest-margin residential business remains stuck below trend, and when tariffs have introduced new cost uncertainty. The file turns on a single question: whether Carrier's commercial and aftermarket engines can compound through the residential down-cycle quickly enough to deleverage the balance sheet before the next macro test arrives.

The bull case is that the company has assembled a uniquely positioned climate solutions portfolio — leading brands, a massive installed base, an accelerating data center tailwind, and a disciplined service-attach playbook — that can deliver mid-teens total shareholder returns from current levels as residential normalizes. The bear case is that residential stays weak longer than the consensus expects, data center orders prove lumpy rather than secular, and $11 billion of net debt leaves little room for error. Both cases are worth understanding.