Why controlled living space ventilation? Since almost every house should be built airtight for energy reasons, the odors that arise in the building (cooking, fumes, sleeping, toilet, etc.) can no longer escape sufficiently to the outside. At the same time, too little outside air (fresh air) gets into the house. This can then lead to mold formation in damp rooms (such as the bathroom). When you ventilate regularly through open windows and doors, warm air is lost. If you don’t want to or can’t ventilate briefly and intensively at least three times a day or don’t want to waste heat energy, we offer controlled ventilation. With controlled living space ventilation, the ventilation of houses works automatically. Further advantages: With appropriate filters, allergy sufferers get a corresponding increase in their quality of life, as pollen (and insects) no longer get inside.