The company maintains an extensive inventory of products covering 15 areas of expertise. Core markets include plumbing; heating; HVAC; commercial refrigeration; and PVF (pipe valves fittings).

PJ Dionne Company serves the commercial plumbing and HVAC needs of public and private organizations across the greater Boston area. For a quarter century, the company's plumbers and pipe fitters have installed and maintained mechanical systems in new and historic buildings, working closely with the area’s leading general contractors, engineers, and building owners.

S & A is the premier supplier of building and remodeling products including plumbing, heating, air conditioning, water systems, water treatment, electrical, and underground products in Berkshire County, Massachusetts.