Ventilation system D residential

In a ventilation system D, also known as balanced ventilation, the supply and removal of air takes place mechanically. This is done through a network of ventilation ducts and fans. Incidentally, the heat from the exhausted indoor air is used to heat up the supplied cold outdoor air in the heat exchanger. In this way, thanks to your ventilation system, you need to heat the incoming air less and save on your heating costs.