The passivhaus concept was actually started in the U.S. in the 1970’s. While it failed to gain popularity here initially, the massive implication in Europe has sparked a recent revival of the style in the U.S. For example, the O’niell House in Sonoma, California. It uses 70% less energy than a conventional northern California home. It is also being used for multifamily structures, like a proposed co-housing project in Brooklyn.
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