This episode is once again set in Lexington, Mass., at the "Big Dig" house. In Los Angeles, Calif., licensed contractor and host Amy Matthews visits the Eliosolar factory, where metal sunshades have the added the advantage of making hot water. Kevin checks out the latest advances in refrigerators and shows how to beat "vampire" electricity usage by common household electronics. In Kohler, Wis., In Luling, Texas, host Kevin O'Connor discovers the miniature masterpieces of Texas Tiny Houses which are small structures built from the finest vintage materials that serve as actual homes for downsizers. He also sees the future of kitchen and bathroom sinks as well as a bathtub designed for aging bodies. Also, Amy looks into architectural metal, one of the hottest things in home design.