Johnstone Supply
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About Johnstone Supply
Johnstone Supply in Roseville, Michigan operates as an HVAC equipment supplier serving contractors across the metro area. With a rating of 4.1 stars from 34 customer reviews, the business stocks a comprehensive inventory of heating and cooling components including furnaces, split systems, mini-split systems, evaporator coils, air handlers, and commercial packaged units. The Roseville location assists professional HVAC technicians and installation teams with parts procurement, offering will-call pickup and account services for registered contractors.
The Roseville Johnstone Supply location differentiates itself as a trade-only distributor, meaning they supply equipment to licensed HVAC professionals rather than retail homeowners. Their website showcases an extensive equipment catalog spanning residential unitary systems, multi-zone and variable capacity systems, manufactured housing solutions, and field-installed accessories. The business maintains relationships with contractors like Tans Heating & Cooling and Krueger Heating & A/C, Inc., serving as a reliable parts source for ongoing installation and service work.
Reviewers highlight specific staff members who deliver reliable service, with Bob receiving particular praise for his product knowledge and willingness to assist with troubleshooting. One reviewer noted the team helped carry materials purchased at the store for Tan's Heating & Cooling, while another mentioned the staff can answer most HVAC-related questions and keeps a nice selection of parts in stock. A third reviewer described the Roseville team as the least likely to mess up compared to other supply houses in the tri-county area, citing strong service reliability.
What Customers Say
5 of 8 visible reviews award 5 stars, praising staff helpfulness, parts availability, and product knowledge. Negative reviews cite wholesaler business model confusion and return policy frustrations, while positive reviews specifically name staff members like Bob and emphasize the team's willingness to assist contractors.
Working Hours
| Sunday | Closed |
| Monday | 7:30 AM–4:30 PM |
| Tuesday | 7:30 AM–4:30 PM |
| Wednesday | 7:30 AM–4:30 PM |
| ThursdayToday | 7:30 AM–4:30 PM |
| Friday | 8 AM–3 PM |
| Saturday | Closed |
Services
HVAC Equipment Sales
Distributes furnaces, split systems, mini-splits, packaged units, and evaporator coils to licensed contractors.
Air Handler Supply
Provides residential and commercial air handlers and evaporator coils for replacement and new installations.
Commercial HVAC Systems
Offers single packaged units and commercial-split systems for light commercial applications.
Mini-Split Systems
Stocks single-zone and multi-zone mini-split systems including variable capacity options.
Contractor Accounts
Provides account setup for HVAC professionals with access to contractor tools and pricing.
Will-Call Pickup
Allows contractors to order parts and pick up at the Roseville location during business hours.