Johnstone Supply, with a location in Tigard, Ore., is a cooperative wholesale distributor that provides brand name products, technical knowledge and customer service to the heating, ventilation, air conditioning and refrigeration industry. The company offers customer service, technical advice and training seminars to clients and provides a catalog available in print and online that features more than 28,000 parts, supplies and equipment. Its products are available in more than 300 independently owned stores throughout the United States and total over a billion dollars in annual sales. Additionally, Johnstone Supply operates regional distribution centers in Portland, Ore.; Memphis, Tenn.; and Allentown, Pa.