Watsco, Inc. is a distributor of air conditioning, heating and refrigeration equipment, and related parts and supplies in the United States. Watsco was founded more than 60 years ago as a manufacturer of parts, components, and tools used in the HVAC/R industry. In 1989, the company shifted from manufacturing to distribution, by acquiring Gemaire Distributors Inc., a South Florida-based Rheem distributor. Wikipedia