Choose the appropriate fan is a very important case. We can do this by our selves to our small wall or duct installation. Below we present instruction which will guide you step by step :

1. Calculate the size of the room where the fan will be installed. Multiply all dimensions. The result of this calculation is a volume of the room: height x width x length = volume

e.g  Bathroom : 2,6m high x 3m width x 4m length = 31,2 m³

2. Find the type of a room from the table and its proper air exchange multiple.

3. Calculate how many cubic meters of air should be processed by the fan in 1 hour – multiply multiple by volume – volume x multiple of an air exchange in 1 hour = exchange of a processed air in 1 hour.

e.g. 31,2 m³  x 5 = 156m³/h

4. Click a fan from our chart below with performance that matches your calculations.

To our example bathroom 2,6m x 3m x 4m we could choose : STYL Ø120, EURO 2, NV 12 , TURBO Ø100 because all of them have air flow 150 which is close to needed 156m³/h.