This minimalistic, energy-efficient home in Zurich, Switzerland uses geothermal energy to produce its hot water, and a pair of 300-foot-deep boreholes that transfer warmth through a heat pump provide the under-floor heating. With all of the technology keeping this family off the grid, this house is so efficient that the architect jokes that one light sculpture, made up of two rows of bulbs, which can be seen in the reflection from a window in the living room, uses as much energy as the rest of the house put together.
Photo by Hertha Hurnaus.
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