Page title, choosing the right extractor hood

With the kitchen increasingly becoming the focal point of family life, the ambiance is extremely important. The quality of the air in your kitchen is influenced by many things, including humidity, grease particles, dust, smells, smoke and waste heat. It is advisable therefore to ensure that "used" air is regularly cleaned and or replaced. By installing an extractor fan you can actively ventilate your kitchen, achieving appropriate ventilation whatever the weather or size and shape of the room.

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Choosing the right...

Extractor Hood Efficiency

The most efficient way to extract is through ducted extraction. We advise that you use the largest ducting size possible so the largest volume of air is extracted. Maximum ducting length should be 5 metres, allowing 1.2 metres for every 90º bend. You also need to consider that fresh air needs to flow back into the kitchen.

Recirculation which passes the air through a series of filters and back into the room.

Extraction Rate

Before choosing the hood for your kitchen, you should work out the following calculation:

Volume of kitchen (length x width x height) x 10 changes of air per hour = minimum extraction rate.

You should always observe the minimum recommended height of the hood from the hob.

Calculate your minimum extraction rate

Kitchen measurements:

Length:	m
Width:	m
Height:	m

Extraction

Recirculation

The best way to remove steam and odours is to extract the air out of the room through ducting. Unfortunately, if you live in a flat or your hood's too far away from an outside wall, this may not be possible. In this case, the only alternative is to recirculate the air. Stale air is sucked through a grease filter and then a charcoal filter for purification, and then pumped back in to the kitchen via an opening in the hood. The higher the extraction or circulation rate, the more efficient the hood.