Have your ventilation system cleaned at regular intervals. It will work better, last for longer and ensure a healthier indoor climate. You will avoid up to 10 percent annual loss of capacity.
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With a ventilation system C, fresh air is drawn indoors through vents in windows or walls. The used indoor air is exhausted mechanically. In dry areas, such as living areas, bedrooms and offices, fresh air is supplied through vents. The most common vents are self-regulating. Vents that you open or close manually are less common.
Contaminated or used indoor air is exhausted mechanically through air vents in wet areas. Wet areas are kitchens, bathrooms, toilets and washing areas.
With a ventilation system D, the supply of fresh outside air and the discharge of used indoor air, takes place fully mechanically by two fans. This means that no vents will be required in walls or windows.
The fresh outside air will be drawn outdoors via valves. Those are located on the roof or in the wall. In this case too, the fresh outside air will find its way into the dry areas, such as living areas, bedrooms and offices. The indoor air used in the wet areas will also disappear through valves.
Therefore, system D fully mechanically exhausts the used indoor air and fully mechanically draws in fresh outside air. For this reason, a system D is also known as balanced ventilation.
An air heating system is characterised by floor vents, through which warm air is blown out, with a view to heating the home. Often, the air is fed through insulated ducting in the floor.