Johnstone Supply of Portland

Johnstone Supply of Portland is a wholesale distributor serving professional HVACR contractors in Portland, ME, located at 238 Riverside St. The business holds a 4.40 rating based on customer reviews. It provides equipment, parts, and supplies for residential, light commercial, refrigeration, and facilities maintenance. The inventory features unitary and specialty equipment, repair and replacement parts, and installation and maintenance supplies. The company maintains the largest selection of equipment and genuine OEM parts in the industry, offering replacements for nearly every major brand. An extensive cross-reference system facilitates sourcing hard-to-find parts.

Through relationships with hundreds of top manufacturers, the business provides access to two million special-order parts and over 80,000 products available online. The company operates a network of over 465 wholesale locations across the U.S. and Canada. Inventory is supported by a six-point distribution network with facilities in Portland, OR; Las Vegas, NV; Dallas, TX; Joliet, IL; Allentown, PA; and Jacksonville, FL. Service options include curbside pick-ups, locker options, scheduled delivery, overnight inventory replacement, Will Call solutions, and extended hours.

The business also provides technical instruction through Johnstone University. This platform offers hands-on product training and hundreds of classes, including NATE certified courses, to help contractors build product and business knowledge. The company’s history began in 1953 with a single store in Portland, Oregon, under founder John Shank. Shank expanded the product range and created the first Johnstone Supply Catalog, which became a comprehensive industry resource. The company continues to serve contractors with a wide variety of options and digital tools.

The business is situated on Riverside Street, just a tenth of a mile from Warren Avenue and roughly three tenths of a mile from the Maine Turnpike and Happy Wheels Skate Center.

BizScoreAI awards the business a Content Quality score of 75 out of 100, which ensures the website clearly answers customer questions and provides content that AI assistants can quote directly. The company also receives a Performance score of 72 out of 100, reflecting fast website loading speeds that keep visitors engaged and support better search engine rankings.