Single Family Houses 

The purpose of ventilation is to provide us with healthy fresh air indoors. It removes old, stale air and takes in clean, fresh air. Of course its main task is to ensure that the air indoors is healthy and safe to breathe.

Nowadays ventilation is also focused on energy and on saving energy costs by using ventilation with heat recovery.
   

   
Technical solutions
There are two key types of technical solution for ventilation, balanced ventilation with heat recovery and mechanical exhaust air ventilation.

		Balanced Ventilation with Heat Recovery     The most complete form of ventilation system is the balanced ventilation system with heat recovery. In a supply and exhaust air system with heat recovery the outdoor air vents are positioned in living rooms and bedrooms and the exhaust air vents in the bathroom, toilet and utility room.
This system makes use of the heat in the used ventilation air, air that would otherwise be released straight out into the cold. The heated indoor air passes through a heat recovery unit before being expelled and is used to heat the incoming outdoor air. This saves energy while providing a better climate indoors. This makes it possible to control the air quality and the air volume coming into the home.    Balanced ventilation systems also have effective filters, which filter out dust and pollen from the outdoor air.   Read more about our balanced ventilation systems »
		Mechanical Exhaust Air Ventilation    Mechanical exhaust air ventilation is just that. Air is sucked out of the home using fans and outdoor air is taken in through slot ventilators in the window frames. Warm used air is sucked out through exhaust air vents in wet rooms and through the kitchen extractor.
These exhaust air vents are connected by a ducting system from which the air is expelled through a roof cowl using an exhaust air fan.     The disadvantage is that outdoor air is untreated when it is taken in and this causes cold draughts in the home when it is cold outside. This often leads to the outdoor air vents being closed and never reopened which results in the ventilation system ceasing to work. Also the outdoor air is not filtered when it comes into the home and so the quality of air in the home is affected.   Read more about mechanical exhaust air ventilation systems »

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