October 17, 2019

How To Choose Ventilation Fans For Bathrooms

ventilation fan for bathroom

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You need ventilation fans for your bathroom, and for bathrooms without windows they are virtually essential. The reason for installing a fan is not just for expelling unpleasant odors, though this is important. The primary reason why a fan is required is to extract the moisture that constantly builds up in the room. This helps prevent humidity damage or as in our case many years ago, wallpaper from peeling off the wall from all the moisture.

Extracting the moisture is actually essential for preserving the fabric and structural integrity of your house. Failure to get rid of it can cause mildew and mold to form, and can also cause paint to blister and peel. If it is left alone for long enough, the effects can include warped doors, and even rotting joists.

Because of the dangers of excessive moisture, the most essential element in installing your fan is to ensure it is vented properly – that is, to the outdoors. Venting it into the attic is a common mistake, but this just transfers the humidity problems to another part of the house.. The fan should push the air out via a flexible plastic hose attached to a vent cut into the outside wall, with a flapper to prevent the cold air from re-entering the room, and the hose needs to be insulated to prevent condensation from building up. There needs to be a gap under the bathroom door, measuring at least an inch, to allow replacement air to be drawn back in and circulated.

When choosing your fan, you should first consider whether you want one with a switch or a timer. To ventilate properly, the fan should continue running for 20 minutes after each time the bathroom is used. Having a timer ensures it is turned off automatically, without your having to remember to come back and switch it off.

You also have to ensure you get the size right. In order to be effective, the fan has to have the correct CFM (cubic feet per minute) capacity for the bathroom size. To work this out, measure the volume of the bathroom and divide it by 7.5, and this gives you the correct CFM rating to look for on the box of the fan. The other main decision you have to make is how quiet the fan will be, measured by its SONE rating – 4.0 being noisy, and 1.0 or less being the quietest. Most people obviously prefer it to be as quiet as possible, but the quieter the fan is, the more it costs, so it will depend on your budget.

Newly built homes should have a fan installed as standard, but if you do not have one, it is essential to have one put in. Ventilation fans for bathrooms come in all shapes, colors and sizes, to suit your preferred style. The fan should not only improve the functioning of your bathroom, but enhance its appearance as well.