Richard Trethewey

Richard Trethewey has been a prominent figure in home improvement television since 1980, serving as the plumbing and heating specialist on the acclaimed series This Old House. He succeeded his father, Ron Trethewey, who was the original expert in the inaugural season. Hailing from Dedham, Massachusetts, Richard was immersed in the plumbing industry from an early age, with his family's business, Trethewey Bros., established in 1902. He began gaining hands-on experience during summer breaks and eventually became a licensed master and journeyman plumber in Massachusetts.

Renowned for his ability to demystify complex plumbing and heating issues, Richard’s approaches have resonated with audiences, making him a trusted resource for homeowners. Beyond his television contributions, he launched RST Thermal, a company dedicated to training professionals in the skilled trades, further showcasing his commitment to the industry.

In addition to his professional endeavors, Richard enjoys engaging in sailing and home renovation projects with his two sons. His blend of expertise, passion for educating the public, and approachable demeanor has earned him admiration from fans, solidifying his status as a beloved personality on This Old House and its companion series, Ask This Old House. Richard Trethewey's legacy is defined not only by his technical skills but also by his dedication to sharing knowledge and fostering a deeper understanding of home improvement.