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Are Passive Houses cost-effective?

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, we will first make calcula-\\ tions without the ventilation system. The heating demand will\\ then amount to ... (ground\\ floor). Due to intelligent planning the ventilation ducts are\\ very short.**//|\\ \\ |{{ :picopen:2f... alls }// . * A modern Passive House suitable **ventilation system with an effective heat recovery of 92%** s... theless, even greater efficiency is possible: the ventilation can be combined with a **compact heat pump unit**