Johnstone Supply

Johnstone Supply has been serving Phoenix-area contractors and homeowners since 2003 from its location at the intersection of 35th Avenue and Camelback Road. This heating equipment supplier operates as a pro-dealer counter, carrying parts and units from major manufacturers and stocking inventory that's become a go-to resource for tradespeople across the Valley. The business holds a 4.2-star average across 28 reviews, with repeat customers praising the counter staff's product knowledge and willingness to source hard-to-find components. From its base in central Phoenix, the operation serves contractors working in neighborhoods ranging from Deer Valley to South Mountain, plus suburban communities including Glendale, Peoria, and the West Valley.

What sets Johnstone Supply apart from standard supply houses is its commitment to getting contractors and serious DIYers exactly what they need, when they need it. Multiple reviewers specifically mention the team's ability to locate obscure parts or special-order equipment that other local suppliers could not provide. The Saturday morning counter hours give working contractors a rare weekday window to pick up emergency parts. Staff members including Mike, Alex, and Jerry have built reputations as responsive counter professionals who understand technical specifications and can advise on compatibility issues, saving job-site time on complex installs.