If youíre considering a new bathroom, utility room, kitchen
or even toilet in either a domestic or commercial property there are certain
regulations that youíll need to follow. One unavoidable regulation is for the
installation of an extractor fan. However, with such a vast number of extractor
fans available to buy, how do you know which is the right one to choose?
There are three principal types of extractor fans. Every
model can be categorised as either an axial, centrifugal or inline extractor
fan. Each should always be appropriately installed in the property into a wall,
with the ducting located on the exterior of the property. Installation will
demand that you cut a hole, the size of the fan in the wall to allow the air to
be extracted. Many professionals agree that axial fans are the best suited to
Generally used in properties that require elongated ducting,
centrifugal fans are popular in commercial and industrial environments across
the UK. They work by turning the air through a 90 degree bend within the fan
itself. This increases air pressure, and hence the power of the fan. One
principal drawback of centrifugal fans is that they are generally considered to
be very noisy, compared to their inline and axial counterparts. Those that
intend to install extractors in the ceiling should consider centrifugal fans.
Inline fans can, technically be categorised as either axial
or centrifugal. They are, however, NOT
installed on walls and ceilings, but the void or loft space above a ceiling.
More powerful than centrifugal fans, they are also highly capable of providing
high performance ducting over long distances.
Generally speaking, axial fans are considered to be the most
common type of extractor. Found in a wealth of different environments, they are
typically placed on a wall, with ducting leading straight outside. Common axial
fans are mounted on the walls.
Some fans can be installed into window cavities. However,
those considering employing this method should be aware that a specific window
kit will be required. Always make sure that you purchase a fan that can be
mounted on the window, otherwise all you will accomplish is wasting a lot of
money. Given the energy efficiency offered by most windows, an increasing
number of window fans are considered to be outdated and redundant.
These are just a few of the different types of extractor
fans that can be used. If youíre considering installing an extractor of any
sort, itís wise to seek professional guidance prior to purchase to make sure
that you purchase the right fan for your environment.