As the Building Engineer on Ask This Old House and This Old House, Ross Trethewey brings cutting-edge building technology and sustainable energy stories to a national audience. He joined the team in 2011 and became a regular cast member in 2016 after co-creating the popular “Future House” segment, which explores the impact of technology on modern living.
Ross represents the third generation of his family to contribute to This Old House, following in the footsteps of his grandfather Ron—the show’s original 1979 plumber—and his father, Richard. Growing up on-site, Ross spent his childhood learning the trades firsthand before formalizing his career in engineering.
Beyond television, Ross is the founder and lead engineer of TE2 Engineering, a consulting firm established in 2010 that specializes in high-performance HVAC, renewable energy, and mechanical, electrical, and plumbing (MEP) design. A licensed Professional Engineer (P.E.) in various states, he holds both a Bachelor and Master of Science in Mechanical Engineering from Tufts University and previously worked in Germany focusing on solar, heat pumps and boiler equipment.
Ross lives outside of Boston with his wife and two sons. He spends his free time coaching youth sports and working on his house.
Follow Ross on Facebook, X: @RossTret, and Instagram at @rosstrethewey.
