Butler-Nissen passive house in Cleveland Heights
01/13/13 | Steven Litt, The Plain Dealer
They replaced the old house with a new, 4,000-square-foot dwelling designed around “Passive House” principles to consume as little energy as possible. The Passive House movement, rooted in Europe but gaining ground in the U.S., is based on the idea of using “passive” heating from sunlight and insulating a house so well that it takes little energy to heat and cool.
http://blog.cleveland.com/architecture/2013/01/the_butler-nissen_passive_hous.html