RST Thermal is a Manufacturer's Representative, serving New England, for multiple leading manufacturers whose products offer a systems approach to comfortable heating and cooling. We provide technical and sales support to our wholesale distributor partners and contractors. For homeowners, we provide geographic lists of installing and servicing contractors to help them find the "best fit" for the project to be done.

Over the twenty year history of the company, we have been involved with thousands of succcessful projects where contractors sold better equipment, consumers saved dramatic amounts of energy, and solutions were offered that provided the highest levels of comfort. 

RST Thermal is the merging of two rep firms created by two similar minded individuals who have spent their entire lives in the hydronic industry. Richard Trethewey started RSTINC in 1989 to pioneer and offer his customers many of the best hydronic heating lines in the market. For over 30 years, beginning in 1979, Richard has been the Plumbing and Heating Expert for the PBS series, “This Old House/Ask This Old House.” Dave Walsh started Thermal Sales because he recognized a changing market and wanted to bring to our industry the highest quality products available from both Europe and North America.

Click on any of the boxes above for more technical information about any of our manufacturer's lines.

Affiliated Companies We Recommend

Trethewey Energy Engineering (TE2, www.tesquared.com) to provide energy efficient solutions, specializing in the design of “green” mechanical systems.

Cape Cod FireLog, (www.capecodfirelog.com) made of 100% recycled wood, no chemical additives, compressed at very high heat, burn longer and burn hotter with near smokeless flames, no odor, cleaner emissions, and minimal ash residue than typical firelogs.

Hydronics Heating Association (HHA) is accessible from the website address www.comfortableheat.net. The Hydronic Heating Association was formed to set industry standards, educate contractors, and inform the public about the benefits of having a quality hot water system installed.