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Protection against overheating in summer and shading systems

In winter a passive house has a thermal energy requirement of less than 10 W/m². This means that if the windows are sized appropriately, irradiation is considerably greater than the amount of thermal energy needed. In general passive houses have advantages over poorly insulated buildings when it comes to protection against overheating in summer. This is specially noticeable with poorly insulated top floors, e.g. in detached houses.