Room ventilation & window ventilation in direct comparison

Window ventilation:

• Cold air (uncomfortable, draught – risk of getting a cold) intermittently enters the living space in large amounts.

• To achieve a sufficient air quality, ventilation would have to be carried out every 2 hours. This is hardly possible both by day and night.

• Dusty air can cause allergy problems (pollen).

• The heat contained in the exhaust air cannot be used and just flows out – waste of energy!

• Disturbance due to noise and insects due to open windows.

• Continuous room dehumidification is not possible – risk of mould.

• Plants must be removed from the window sill.

• Risk of burglary.

Controlled room ventilation:

• Preheated, cosy warm air is supplied to the living spaces.

• Little amounts of fresh air are continuously supplied to the living space (no draught).

• Filtered air means lower dust loading in all rooms. Allergic reactions only rarely occur, since pollen are filtered (fine filters, electrostatic filters).

• Use of the exhaust air energy due to heat recovery.

• No disturbance due to noise and insects, since ventilation is carried out using the ventilation system with the windows closed.

• Continuous room dehumidification.

• Plants can remain at the window.

• No risk of burglary.