Johnstone Supply

Johnstone Supply is a trusted HVAC equipment distributor serving contractors and trades professionals across the Phoenix metropolitan area, with a dedicated location in North Phoenix. Holding a solid 4.4-star rating from 32 verified customer reviews, this supplier has built a reputation over more than a decade as a reliable source for equipment, parts, and installation accessories. The company operates Tuesday through Saturday from 7 AM to 5 PM, serving the professional trade community with efficient turnaround, broad inventory access, and knowledgeable staff who understand the technical demands of residential and commercial HVAC installations.

What distinguishes Johnstone Supply from standard supply houses is their extensive equipment portfolio spanning major brands and system types. They stock an array of single packaged units, split systems, and mini-split systems alongside variable-capacity systems designed for modern high-efficiency applications. For residential projects, contractors find gas furnaces, oil furnaces, air handlers, and evaporator coils, while commercial clients access single-packaged and multi-zone systems tailored to larger buildings. The supplier also offers extended warranty programs, giving installers added protection for their customers. Their inventory includes field-installed accessories that keep jobs moving without multiple supplier stops.