Watsco, Inc. is the largest distributor of air conditioning, heating and refrigeration equipment and related parts and supplies (HVAC/R) 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. Under the leadership of its current CEO, Albert H. Nahmad, from 1973 to 1988 Watsco grew from US$5 million in revenues to US$25 million.