Watsco is the largest distributor of heating, air-conditioning and refrigeration (HVAC/R) equipment and parts in North America — a middleman that buys furnaces, AC units and heat pumps from Carrier, Rheem, Mitsubishi and Daikin and resells them to 130,000+ local contractors through ~695 branches. It builds almost nothing: ~62% of its purchases come from Carrier, with which it also runs its biggest businesses as 80/20 joint ventures. The moat is replacement demand — most units are bought when an old one dies, not on a shopping trip.
What Watsco, Inc. really sells
Watsco is the largest distributor of heating, air-conditioning and refrigeration (HVAC/R) equipment and parts in North America — a middleman that buys furnaces, AC units and heat pumps from Carrier, Rheem, Mitsubishi and Daikin and resells them to 130,000+ local contractors through ~695 branches. It builds almost nothing: ~62% of its purchases come from Carrier, with which it also runs its biggest businesses as 80/20 joint ventures. The moat is replacement demand — most units are bought when an old one dies, not on a shopping trip.