Yet, manual airing requires action of the residents – not everyone has enough time or remembers to regularly air all rooms in their house in a sufficient manner. Then again, people suffering from allergies will do all they can to avoid opening the windows in their apartments and letting in the unfiltered outside air during certain times of the year.
Heat recovery ventilation combines a number of advantages: It performs constant air exchange in the entire house or apartment autonomously. Used room air is replaced with fresh outside air automatically. During this process, the outside air is filtered to make sure that no pollutants, pollen or viruses enter the living quarters.