This strange word and the instrument it means of a great importance.
You surely experienced the feeling when you stay in a closed room without airing so that the air becomes „heavy”. We feel uneasy, start to sweat and our breathing is speeding up. In other case if we step in a room where people were spending the whole night you get a whiff of the unpleasant smell that would immediately made us return.


Imagine that the level of CO2 will triple in a closed room in a short time, while the level of oxygen will decrease. The human body and lungs as all the continental creatures need fresh air. The air used up contains very little oxygen, which is harmful to our life quality and our body reflects it undoubtly.



So looks the instrument, which provides supply for fresh air in a way that the air earlier cooled down will not get warm while changing the fresh warm air from outside so the cooling energy already taken in will not be wasted.

While airing, great amount of dust and other allergen materials get into the flat. In a well insulated house it will be avoided by the recuperator, because it causes a little pressure and when we open the door the air flows towards the door and so the dust can not come in.

The well insulated house