Plumbing & HVAC Systems Expert; Resident Specialist on "This Old House"; Licensed Master Plumber

Richard Trethewey Biography

Richard Trethewey is a plumbing and heating expert recognized as the resident mechanical systems specialist on the home improvement series "This Old House." A licensed master plumber and leader in the HVAC industry, Trethewey has provided professional insight on plumbing, heating, and cooling to a wide audience through his work on "This Old House," "Ask This Old House," and related television projects. His on-camera explanations and job-site demonstrations have clarified complex building systems for homeowners and tradespeople, establishing Trethewey as a trusted authority in residential mechanical systems.

Trethewey’s television career is rooted in his real-world expertise. As a second-generation plumbing and heating professional, he joined "This Old House" in its early seasons and became the primary voice on topics such as hydronic heating, high-efficiency boilers, modern plumbing layouts, and energy-saving retrofits. Trethewey has also appeared on other home improvement networks and specials, and his practical teaching style has made him a regular presence at trade events, industry showcases, and live demonstrations, where he educates audiences on evolving codes, technologies, and best practices in the plumbing and HVAC fields.

Beyond television, Trethewey is an industry leader and entrepreneur. He has served as a principal in mechanical contracting and consulting ventures, including firms specializing in advanced heating, cooling, and renewable-energy-based comfort systems for residential and light commercial buildings. Through this work, Trethewey has advocated for high-efficiency equipment, thoughtful system design, and whole-house performance, contributing to the advancement of sustainable and comfortable solutions in the trades. His field experience and ability to communicate technical concepts under the demands of television production have made him a sought-after presenter for manufacturers, trade associations, and professional education programs.

Throughout his career, Trethewey has guided audiences through significant changes in building technology, including the shift from outdated systems to condensing boilers, sophisticated controls, and integrated mechanical designs. He has addressed the challenges of retrofitting new systems into older or historically sensitive homes and has used his platform to highlight the importance of skilled trades and craftsmanship. Trethewey’s technical competence, problem-solving skills, and approachable on-screen presence have influenced how viewers understand plumbing and heating, reinforcing his role as a credible voice in building systems and home comfort.

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Speaker profile last updated by AAE Talent Team on 01/08/2026.

Richard Trethewey Videos

Mini Duct System Installation Guide | Richard Trethewey

Mini Duct System Installation Guide | Richard Trethewey

Richard Trethewey and Charlie Silva meet with HVAC contractor James Bouchard to talk about the high-pressure high-velocity mini duct system going in...

Explainer on Home Energy Ratings | Richard Trethewey

Explainer on Home Energy Ratings | Richard Trethewey

Charlie Silva has to decide whether to notch out the slab to put in plumbing, electrical and mechanicals or just remove the entire slab. The answer...

Panel on Viewer Feedback Responses | Richard Trethewey

Panel on Viewer Feedback Responses | Richard Trethewey

In this video, as another Ask This Old House season closes, Kevin and the rest of the crew get together to read some viewer feedback about their...

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  • What topics does Richard Trethewey speak about?

    Richard Trethewey is a keynote speaker and industry expert whose speaking topics include Conservation, Energy, Real Estate, Television & Film
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Richard Trethewey is a keynote speaker and industry expert who speaks on a wide range of topics. The estimated speaking fee range to book Richard Trethewey for your event is $10,000 - $20,000. Richard Trethewey generally travels from and can be booked for (private) corporate events, personal appearances, keynote speeches, or other performances. Similar motivational celebrity speakers are Mina Starsiak Hawk, Stephen Fanuka, Egypt Sherrod, Ahmed Hassan and Vern Yip. Contact All American Speakers for ratings, reviews, videos and information on scheduling Richard Trethewey for an upcoming live or virtual event.

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