Johnstone Supply

Johnstone Supply operates as a commercial HVAC equipment distributor in Mesa, Arizona, serving licensed contractors throughout the East Valley including Gilbert, Chandler, and surrounding communities. The wholesale-only location maintains a 4.8-star rating from 30 verified customer reviews, reflecting consistent service quality in a specialized market segment. Unlike retail outlets, this facility serves exclusively professional installers and service companies, supplying components ranging from residential split systems to commercial packaged units.

The distributor differentiates itself through an extensive equipment portfolio and a recently modernized facility. Their inventory encompasses brands for residential unitary systems, mini-split configurations, variable capacity systems, and manufactured housing solutions. The new Mesa location offers expanded parking accessibility compared to their previous site near Alma School and Broadway. Product categories include gas furnaces, oil furnaces, air handlers, evaporator coils, and field-installed accessories, supported by extended warranty programs for qualifying installations.

Customer experiences highlight staff members who provide above-and-beyond assistance. Xavier earned recognition for patiently coordinating credit authorization to complete a contractor's purchase order. Dustin received commendation for diligently resolving a complex parts requirement. Multiple reviewers specifically commend Mike as a knowledgeable representative combining product expertise with fair, courteous service. The Desert Oasis Photography review documents the business's recent relocation to their current upgraded location.