This house has it: an air-source heat pump, a rainwater harvester, central-vacuuming system, triple-glazing and motion-sensitive lighting system. It also features underfloor heating and self-closing loos. The five bedrooms are arranged over three storeys.
José MandojanaIn Seattle’s Greenwood neighborhood, architect Tiffany Bowie built an efficient house for her father, Dave, a retired engineer. A prototype system by Kirio monitors the home’s energy use.