… windows are closed in buildings which do not comply with the current low-energy house standard occurs at a rate between one half and two times the volume of the room … may occur. The effects of these indoor contaminants on health may be diverse, causing for example irritation of the respiratory air ways, allergies, and other … in places where humidity condenses on cold walls, which can then not dry, because e.g. there is furniture placed in front of them. In such cases, subsequent …