Johnstone Supply

Johnstone Supply operates as a heating equipment supplier in North Charleston, South Carolina, serving licensed HVAC contractors across the region. With a 4.8-star rating from 33 verified reviews, the company has built a reputation among professional contractors for reliable equipment access and knowledgeable support. The supplier maintains standard weekday hours and serves the greater North Charleston metropolitan area.

What sets Johnstone Supply apart is their contractor-only distribution model, which ensures professional-grade equipment reaches only licensed installers. Their inventory includes major residential brands like split systems, mini-split systems, variable capacity systems, and gas furnaces, along with commercial packaged units. The company offers extended warranties on equipment and maintains multiple convenient locations throughout the Lowcountry.

Reviewers consistently highlight the staff expertise as a differentiator. Ervin Robeson notes he has never been disappointed with their professional knowledge, while Chris Chicarella praises the friendly staff and consistently stocked inventory. George Haselden specifically mentions pleasant, helpful employees and very reasonable prices, describing the experience as consistently positive.