Heath Eastman is an American master electrician and television personality known for his work on This Old House and Ask This Old House. Raised around the construction industry by his general-contractor father, Eastman initially worked in carpentry before becoming interested in electrical work while renovating his own home. He later apprenticed with an electrician, earned his electrical license, and eventually became his former mentor’s business partner. Eastman also served in the U.S. Navy Seabees from 2009 to 2014 before joining This Old House, where he became a regular expert on electrical installations, repairs, and home technology.