When choosing an inline fan it is important to know what size fan you will need in order to provide adequate ventilation for the room it is to be installed in.

The size of the fan is important for a few reasons. Firstly, if the fan is too small and not powerful enough for the environment in which it is installed then the risk of mould and damp remains. Secondly, extractor fan installations must satisfy Building Regulations F(1) which exists with the aim "to protect the health of occupants of the building by providing adequate ventilation".

To work out what size fan you need follow the steps below


1. Work out the cubic meterage (M³) of the room

This can be worked out by multiplying the height, width and depth of the room together in meters



Read more »