Passive House Builders

It's not passive and it's not just for houses. The name comes from the German "Passivhaus". Passive House is passive only in the sense that the building envelope does most of the work to maintain comfortable temperatures, permitting simpler, smaller mechanical systems. It strives for simplicity, but it's not passive. "Haus" translates to mean any kind of building, including multifamily housing, offices and schools. Loosely translated, Passivhaus means "super-efficient comfortable building".