Is the higher the best ?
The Glem approach is to have not the highest extraction power but the right one.
Basing on the usual informations, the perfect air changing in a room correspond to 10 times of the room volume.
For example if you have a room of 15 m2 with a height of 2,7 mt, you need an extraction power of 405 m3/h.
Easily the formula is: 15 x 2,7 x 10 = 405 m3/h
We also suggest to you to switch on the hood at least 10 minutes before starting to cook, in order to create the right air depression around the hob.