Northeast HVAC Directory - Manufactures Reps  Indoor Air Quality Products

E.W. Leonard Phone: 860-873-8691 With over 50 years in the industry, E. W. Leonard, Inc. has the knowledge base to provide answers to your questions and solutions to your plumbing and heating problems. At times even our manufacturer’s come to us for the answers they cannot provide. H.C. Nye Co Phone: 717-561-2500 H.C. Nye Co is a manufacturer’s representative of Engineered applied and Industrial HVAC systems. Our product line coverage includes Central and Eastern Pennsylvania, Southern New Jersey and Delaware. Our market consists of Commercial Buildings, Universities, Data Centers, Pharmaceuticals, Bio-Tech, Healthcare, K-12 and early childhood education and General Industrial. S. Williston Sales Company, LLC Phone: 401-667-7975 A respected entity in the HVAC/R industry, S. Williston Sales Company is a Manufacturers’ Representative providing forward-thinking sales, service and support to wholesale distributors throughout New England and upstate New York.

• E.W. Leonard With over 50 years in the industry, E. W. Leonard, Inc. has the knowledge base to provide answers to your questions and solutions to your plumbing and heating problems. At times even our manufacturer’s come to us for the answers they cannot provide.
• Factor Sales - Since 1980, Factor Sales has strived to provide quality products and exemplary service to plumbing, industrial, HVAC, and fire sprinkler wholesale distributors. Our product mix includes, but is not limited to the following: pipe fittings, pipe nipples, valves, faucets, pipe hangers, PEX tubing, and plumbing/heating specialties.
• H.C. Nye Co is a manufacturer’s representative of Engineered applied and Industrial HVAC systems. Our product line coverage includes Central and Eastern Pennsylvania, Southern New Jersey and Delaware. Our market consists of Commercial Buildings, Universities, Data Centers, Pharmaceuticals, Bio-Tech, Healthcare, K-12 and early childhood education and General Industrial.
• Heat Transfer Products, Inc.- High Efficiency Water Heaters and Boilers for Commercial and Residential Applications - Heat Transfer Products.
• Patterson-Kelley – A trusted industry pioneer for over 125 years, manufactures and sells a full line of hot water boiler systems, semi-instantaneous and instantaneous water heaters, and continuous process powder blenders and dryers. 
• S. Williston Sales Company, LLC - A respected entity in the HVAC/R industry, S. Williston Sales Company is a Manufacturers’ Representative providing forward-thinking sales, service and support to wholesale distributors throughout New England and upstate New York.
• Zefon International, Inc. - Manufacturer and distributor of air sampling equipment. Products include air monitoring filters, vacuum pumps, gas detection equipment and indoor air quality equipment.