Understand any stock in simple English
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Watsco sells air conditioners, heaters, and the parts needed to install and fix them.
Watsco is the biggest seller of air conditioning, heating, and refrigeration equipment in the United States. It doesn't paint its name on the machines — it buys them from manufacturers like Carrier and sells them to the small contractors who install AC units in your house or fix the freezer at a restaurant. Think of it as the warehouse between the factory and the guy in the van. The company runs hundreds of local branches, so a contractor can usually get a part or a unit fast, often the same day. Speed and having the right part on the shelf are the whole game. That's why customers stay: they can't afford to wait a week for a compressor.
Most of the money comes from selling equipment (the actual air conditioners, furnaces, and commercial cooling systems), plus a steady stream of replacement parts and supplies that contractors need for repairs. The parts and supplies side matters a lot because it repeats year after year and tends to have better margins. Watsco also sells some products under its own labels, which helps it keep a bit more of each dollar. Around 60% of revenue comes from residential work and the rest from commercial and other categories, though those mixes shift with the weather. A hot summer means more broken ACs and more business; a mild one means less. That weather sensitivity is real, but the company's huge footprint and repeat-parts business smooth it out over time.
Watsco has been buying up smaller distributors for decades, which is how it expanded from a regional player into a national giant. It also uses its cash to pay dividends and buy back shares — it's a steady, boring, cash-generating machine that happens to sit right in the middle of the "keep buildings comfortable" business. The company was founded in 1956 by the Nahmad family in Miami, and it's still run in a low-key, family-influenced way. Nothing flashy. Just moving a lot of metal and refrigerant, one branch at a time.
Saved answer · last researched 11 Oct 2026