How does One-Watt-House efficiency compare with conventional US home construction?
One-Watt-Houses typically achieve HERS® ratings between 30 and 42. (A newly built local reference building – build excactly to meet IBC 2004 – scores a HERS® 100) HERS: Home Energy Rating System – a nationally reckongized system for rating homes. The system is also basis for determining Energy Star® and LEED® credits and is the only rating system endorsed by the IRS. A HERS 100 is an exactly average local reference building complying with the International Building Code 2006.
