Watsco (WSO)

Most of Watsco’s revenue is generated in the United States, with a particularly strong presence across the Sunbelt, where warm weather, population growth, and high air-conditioning usage support recurring demand. The company also operates in Canada, Latin America, and the Caribbean. Its customer base includes more than 120,000 dealers and contractors, serving both replacement demand and new-construction activity.

Watsco’s business is heavily weighted toward residential HVAC, with commercial products accounting for a smaller share. It is less exposed to highly engineered, complex applied systems than some industrial HVAC companies, instead focusing on distribution of unitary equipment, replacement parts, controls, refrigerants, and installation supplies. The replacement cycle is especially important because air-conditioning and heating systems wear out over time and are often replaced when efficiency standards, repair costs, or comfort needs change.

The company’s role is that of an essential intermediary between manufacturers and field contractors. Watsco invests in branch networks, logistics, product availability, and digital tools designed to make ordering and fulfillment easier for HVAC professionals. That distribution footprint and contractor focus are central to its competitive position.