A trend that seems to be making a comeback since its introduction in the 1970s is the passive solar envelope home design. Todays versions appear to have more science and less “design-by-the-seat-of-your-pants” features. Below you will find links to two web sites from manufacturers who have really gone all out on the science end of the passive solar envelope design.
Enertia Geo-solar Homes
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Peapod Homes
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