About Us

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.

As the Plumbing and Heating Expert for PBS series “This Old House / Ask This Old House” franchise since 1979, Richard Trethewey continues to share with the public what he has learned about the latest innovations in the hydronic and HVAC heating and cooling industry and started his company as a way to train the tradesmen and bring energy efficient solutions to the New England market.

Richard Trethewey

Richard Trethewey

Founder & Owner

Richard 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.

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Evan Trethewey

Evan Trethewey

RST Representative for Eastern MA, Cape and Islands, Rhode Island

Evan started full time with RST Inc in June, 2009, but has many years experience in the heating industry. Before graduating from Fairfield University with a business degree, he worked summers at a major...

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Ross Trethewey

Ross Trethewey

HVAC/Solar Engineer/Sales Team member

Ross joined RST Thermal in January 2010. While working toward his master’s and bachelor’s degree in mechanical engineering from Tufts University, Ross was the lead engineer on the...

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Mary Ellen Hickey

Mary Ellen Hickey

Operations Manager

Mary Ellen joined RST Inc in September of 2004. As the Operations Manager, she handles the daily operations of the business and is the operational glue that keeps the entire organization running smoothly.

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Rich Bialobrzewski

Rich Bialobrzewski

Engineered Products Division Manager

Rich Bialobrzewski (By-LO-breski) joined RST Inc in January of 2011 with industry leading experience in Indoor Air Quality and will champion the air side and engineered products division.

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Mark Toth

Mark Toth

RST Representative

Mark started with us in June of 2012 after working for many years at a large HVAC wholesale distributor in New England. Mark is a graduate of U Maine Orono. He worked 5 years as an HVAC tech and fuel driver in Vermont.

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Kevin Bergeron

Kevin Bergeron

RST Representative

Kevin started full time with RST Thermal  June 2017. He is a recent graduate of the College of Engineering at  the University of Massachusetts-Amherst.  He has worked as a Mechanical Engineering Intern with National Grid and as an AME Extrusion Engineer Intern with Medtronic, of Danvers, MA.  Kevin covers Western Massachusetts and Connecticut for RST Thermal.

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Piper

Piper

Office Mascot

Piper can be found quietly roaming the hallways of RST. She's quite the opportunist and won't hesitate to sneak out of the building when presented with an open door.

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