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Quiet Extractor Fans

April 04, 2012 | Comments: 0 | Views: 126

There are so many extractor fans available these days that's it's very hard to know where to start when you need one. Should you get a low voltage one? Does it need to be round or square? Does it make any difference? How noisy is an extractor fan? What does 32dB at 3 metres mean?

These are just some of the questions that may go through your head when starting to choose an extractor fan, so here we will attempt answer them.

Firstly, let's look at an often ignored piece of information about the fan you are going to have installed; the decibel level. Most people don't even consider this, yet it's one of the main things you notice about a fan, if not the main thing! Imagine when you are having a nice long relaxing bath with a good book and a nice glass of wine or cup of tea, after a long hard day, and as you are lying there all you can hear is the drone or whine of your new extractor fan!

To give you an idea, sound is measured in decibels, or dB. The human ear is very sensitive, and can hear a wide variety of sound levels, from a whisper to a rocket engine. Measured on the scale of decibels, the quietest audible sound is measured as 0dB. A sound measured at 10dB is 10 times louder than one at 0dB, and one at 20dB is 100 times louder than one at 20dB. 1000 more dB is 30dB.

The standard for measuring extractor fans is always "at 3m", so 3 metres from the fan, and most 4" fans range from 24dB to 50dB, with 6" fans generally ranging from 35dB to 60dB. To give that some context, street noise or average radio is classed 70dB, conversational speech at 60dB, a normal residence or office 40dB, a ticking watch at 20dB and a whisper at 15dB.

For a standard bathroom or toilet, you should be looking for a 4" extractor fan, and if noise is at all an issue for you, you should be looking for one as quiet as possible, they start from around 24dB, so aim for that if you can. Vent Axia makes a fan called the Silent Fan, which operates at 26dB and has an extraction rate of 76m metres cubed per hour, but Airflow makes a much more powerful one which operates at only25dB, the QT100 range, which has an incredible extract rate of 90 metres cubed per hour.

The fan you choose needs to be low voltage only if it is being placed near a water source, commonly known as zone 0,1 or 2 of a bathroom, and whether it's round or square is up to you, it's purely aesthetics.

Paul Blythe recommends the QT100T Quiet Extractor Fan from Extractor Fan World and kindly asks that all backlinks are retained.

Source: EzineArticles
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