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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. The heat of the extracted indoor air is incidentally used to heat up the cold outdoor air supplied 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. Specifically for non-residential applications, where other demands are made, Vasco offers a range of solutions.