Johnstone Supply

Johnstone Supply operates as a contractor-only HVAC equipment distributor in Philadelphia, Pennsylvania, serving professional HVAC technicians and registered businesses rather than residential homeowners directly. With a strong 4.4-star rating drawn from 44 customer reviews, this supply house stocks an extensive inventory of heating and cooling equipment including furnaces, split systems, mini-split systems, evaporator coils, and air handlers. The store maintains standard business hours Monday through Friday from 7 AM to 4 PM, closed on weekends. Located in the Philadelphia area, Johnstone Supply positions itself as a reliable resource for trade professionals seeking genuine HVAC components and equipment.

What distinguishes Johnstone Supply is its focus on contractor-only distribution, ensuring that only verified HVAC professionals can purchase equipment and parts. The supply house carries multiple system configurations including single packaged units, multi-zone and single-zone mini-split systems, variable capacity systems, and both gas and oil furnaces. Extended warranty options are available for qualifying installations, and the business offers cross-reference search capabilities to help contractors identify compatible replacement components. This specialization makes the supply house particularly valuable for technicians working on complex installations or emergency repairs requiring specific OEM parts.

Customer reviews consistently highlight exceptional service experiences during high-demand situations. Mac at Johnstone Supply resolved a potentially costly AC failure by diagnosing the issue in just ten minutes, identifying that the system only needed oil and a replacement capacitor, saving the customer over $193 compared to expected repairs. Multiple reviewers specifically name team members including Brian, Guy, Lisa, and Mac as delivering knowledgeable assistance. These accounts describe staff going out of their way to locate hard-to-find parts and provide technical guidance, demonstrating the supply house's commitment to supporting contractors working through challenging HVAC scenarios.