BPA Journal, Sep. 2014. [Scroll to page 3.]
http://www.bpa.gov/news/pubs/Journal/Journal-201409-September-2014.pdf

"Puget Sound Energy, Habitat for Humanity Seattle-King County and BPA recently hosted a tour of a new, high performance manufactured home in Bothell, just north of Seattle. The prototype home incorporates some of the latest energy-saving features and technologies, including a ductless heat pump, heat pump water heater, efficient lighting, triple-glazed windows, foam sheathing on exterior walls and added insulation."