RST Thermal / Unico / Zone First
RST Thermal is a Manufacturer’s Representatives in the New England area covering Eastern Massachusetts, New Hampshire, Maine, Connecticut, and Rhode Island 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.
Richard Trethewey is the founder and owner of RST, Inc. He has been in the heating and plumbing industry his whole life. He grew up working at the family’s fourth generation plumbing and heating business which was started in 1902. Richard started RST Inc. in 1989 as a Manufacturer’s Rep firm to pioneer and champion the best quality hydronic heating and cooling products. Starting RST Inc. allowed Richard a platform to educate and bring energy efficient and “systems” solutions to the New England market. RST Inc. has grown because of the strong focus on quality products backed by a commitment to technical support and customer service.