Wall Exhaust Fans

Guide to Wall Mount Exhaust Fans

Wall mounted ventilation fans are commonly used in domestic applications for areas such as the bathroom, kitchen or laundry areas. A wall mounted fan may be your preference if you have a very limited roof cavity. The wall exhaust fan will require a (typically circular) hole to be cut in the brickwork, allowing for the fan and external vent to be installed through the wall.

Typically a wall fan will consist of the motor component (inside) with ducting or tubing leading to an external vent. There are a few things to consider when installing a wall mounted exhaust fan. If you are replacing an old exhaust fan you will need to remove the wall fan and measure the hole size. It is also necessary to measure the depth of the wall. For a new installation you just need to be sure your fan is suitable based on the depth of the wall – you will need to make a suitable hole in the wall to accommodate the fan.

Browse our complete range of wall mounted exhaust fans below.

wall exhaust fans

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exhaust fan calculatorHow do I calculate which exhaust fan I need?

Fan suitability is usually determined by your room size and application. Generally we recommend aiming to achieve 15 air changes per hour for a bathroom, maybe 10 for a toilet. This is easily calculated, simply work out the size of your room in m3 (length x width x height in meters). You can then multiply this figure by 15 to give you an approximate capacity rating required for the fan. For your convenience all fans are measured in m3/hr. Please note 15 is our general recommendation, rooms prone to condensation may require 20-30 air changes.