Johnstone Supply

Johnstone Supply is a leading HVAC/R supplier serving Maine, Massachusetts, Pennsylvania, and Maryland. Headquartered in Williston, Vermont, the company has been family-owned and operated since 1995, with 19 showrooms and warehouses across the region. Johnstone Supply provides a wide range of HVAC/R equipment, tools, supplies, and parts, and has access to over 75,000 products and $200 million in inventory.