The Granite Group Wholesalers is a distributor of plumbing, heating, cooling, water and propane supplies. We serve contractors throughout New England with our 45 Branch locations. At the heart of The Granite Group is our 220,000 sq. ft. Distribution Center. All 45 Branch locations receive nightly replenishment from CD. The Granite Group features: Rinnai Direct Vent Heaters, Water Heaters, & Boilers, State Water Heaters, Manchester Propane Tanks and Cylinders, RegO Regulators, Continental Industries, Charter Pipe, and Fairview Fittings.