Founded in 1953, Johnstone Supply Inc. is one of the leading co-operative wholesale distributors in the heating, ventilation and air-conditioning (HVAC) industry in the United States. Based in Phoenix, Ariz., the company has 350 stores throughout the country. It offers hydronics and pumps, commercial kitchen supplies, heating and air conditioning controls, motors and its accessories, to name a few. The firm also serves the areas of Portland, Oregon, Memphis, Tennessee, Allentown, Pennsylvania, Jacksonville, Florida, and Las Vegas and Nevada. Johnstone Supply Inc. has association with North American Technician Excellence (NATE).