Richard Trethewey

Richard Trethewey is an American plumbing and heating expert and television personality best known for his longtime work on This Old House and Ask This Old House A licensed master plumber he joined This Old House in 1979 and has since become one of the programs most enduring experts explaining plumbing heating cooling and mechanical systems to homeowners Trethewey is also a principal of RST Inc a manufacturers representative company serving the plumbing and heating industry