Johnstone Supply

Johnstone Supply operates as a professional HVAC equipment distributor serving contractors and tradespeople in Columbia, South Carolina, and surrounding communities including Lexington, Irmo, and West Columbia. The facility maintains weekday hours from 7:30 AM to 5 PM, closed on weekends, and has earned a 4.6-star rating compiled from 35 customer reviews. This supplier specializes in providing heating, cooling, and refrigeration components exclusively to licensed contractors, not to the general public.

The product catalog spans residential and commercial HVAC systems including mini-split configurations with variable capacity technology, geothermal heating units, and manufactured housing equipment. The inventory extends to OEM components such as compressors, motors, coils, thermostats, and refrigeration valves. Staff members including Keith Nichols and Michael Poston have been specifically praised for product knowledge and inventory accuracy, helping contractors source difficult-to-find parts efficiently.

Reviewers describe specific service experiences naming technicians like Daniel Sawyer and Darrell Thompson who treat contractors like family members. One account mentions saves my clients time and money through efficient parts procurement during urgent jobs. The negative review stems from a non-HVAC homeowner attempting retail purchase, which this contractor-only distributor cannot fulfill.