This Old House

North Shore Farmhouse: 400 Years of Home Technology (37x22)

Air date: Apr 30, 2016

Drilling begins on a geothermal system that will reduce the Harbs' energy bill by almost 50 percent. Norm tours local first-period homes with housewright Matt Diana. Kevin travels to the Vermont factory to see the stairs and wall panels being built. Back on the North Shore, Kevin learns about a new technology to seal ductwork.