The episode is set at a stylish home in Sudbury, Mass., designed by its owner and built out of industrial-grade insulated steel panels. Licensed contractor and host Amy Matthews visits a certified Passive House in Belfast, Maine, which has no furnace because it harvests a portion of its heat from its septic system which is affordable. In Billerica, Mass., host Kevin O'Connor investigates the amazing properties of Aerogel, the world's best insulation. In Richmond, Calif., Amy unpacks a Boosthome do-it-yourself home energy and water-savings kit. In Wayland, Mass., Kevin sees the practicalities and economics of installing a residential solar electricity system.