Johnstone Supply

Johnstone Supply operates as a heating equipment supplier serving the Waltham, Massachusetts market with a 4.9-star average rating drawn from 15 verified customer reviews. The storefront maintains weekday hours from six morning until five postmeridian, with abbreviated Saturday availability closing at eleven. Located within the greater Boston metropolitan area, the operation functions as a commercial distribution point supplying HVAC components, furnaces, and installation accessories to trade professionals and, according to reviewers, select homeowners undertaking self-managed projects.

The product catalog spans residential and commercial categories, including split systems, mini-split configurations, variable capacity units, gas and oil furnaces, air handlers, evaporator coils, and multi-zone solutions. Extended warranties are offered on select equipment. Several reviewers specifically reference the breadth of inventory stocked on-site, noting that uncommon components frequently arrive within days when not immediately accessible. The operation occupies a recently renovated facility with clearly marked signage, though one reviewer noted navigating to the rear entrance requires passing the building's front face.

Multiple reviewers commend specific staff members by name and describe scenarios involving urgent component requirements met with same-day procurement. Denys Vu noted the team's familiarity with obscure parts eliminated multiple shop trips. Kyle Evans referenced a Wednesday visit featuring complementary food service, indicating community-oriented client interaction. The recurring theme across eight sampled reviews emphasizes knowledgeable counter staff, competitive pricing versus independent suppliers, and responsive special-order fulfillment for non-stock items.