36 SAUTER FACTS N° 22 100 36 SAUTER FACTS N° 22 100 37 100 SAUTER FACTS N° 22 SAUTER Austria Interview In actual fact, the loss of window area on the south-western side is more of an advantage: it reduces the incoming solar heat, and the cool- ing requirement is also lower. Facts: So can fossil fuels be eliminated entirely? Windtner: We use geothermal heat for heat- ing, and geocooling and well water to cool the building. O

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