Johnstone Supply

Johnstone Supply operates as a heating equipment supplier in Troy, Michigan, serving the broader Detroit metro contractor community. The location holds a 3.5-star rating drawn from 28 customer reviews and maintains weekday hours from 7:30 AM to 4:30 PM, with weekend availability closed. This supplier focuses on providing HVAC equipment and parts to professional contractors rather than performing residential installations or repairs directly.

What distinguishes this supplier is its contractor-only distribution model and specialized equipment inventory. The Troy location stocks residential and commercial split systems, mini-split systems, gas and oil furnaces, evaporator coils, and single-packaged units. Their website features cross-reference search tools and extended warranty options, enabling HVAC professionals to quickly locate specific parts and verify compatibility. The business also offers field-installed accessories and multi-zone systems for complex residential and commercial projects.

Multiple reviewers highlight specific team members who delivered exceptional support. Nick receives repeated mentions for his product knowledge and willingness to ensure jobs proceed smoothly, one contractor noted Nick has never let me down across multiple projects. Steve Murray praised the staff for spending extra time to locate hard-to-find parts and calling immediately when items arrive. The positive reviews consistently emphasize the team's commitment to getting contractors the right equipment quickly, though some customers have reported frustration when product issues arose and warranty claims became complicated.