Here are some important points to consider when sizing, locating and using your fan:

1) Sizing – Physical size of the fan. Will it fit without modifications to structural members? Think about how the air movement will work. Where is the exhaust fan going to draw its air from. Under the door or is the external air vents. It needs to be determined whether you’ve got a small or large bathroom. Of if you have a high ceiling or low ceiling. All of these components will impact the type of fan to use and what will work best for your bathroom.


2) Capacity of Fan
– The rule of thumb you should choose a fan that’s going to completely change all the air in that bathroom 12-15 times an hour. What is the volume of the room multiply that x 15 then choose a fan with a bigger capacity than that.


3) Installataion Conditions
– Can we cut a hole in the ceiling and vent it up to the ceiling space and is that air going to escape?

External vent – If there is no ceiling space, can we cut a hole in the wall? Can we get power to that wall point?

Do we need to duct vent to a remote location (note this reduces the efficiency of the fan so allow for a larger fan. At least extra 10m3/hour per meter of ducting.)

What will actually physically work in your bathroom then dictates what type of fan we have to use


4) Location – Put your vent near the tub/shower/toilet or in a location as close to the centre of the room. If you have separate toilet rooms include a fan inside this space.


5) Using the fan – Leave the fan running for 20 to 30 minutes after you’ve used the shower with a run on timer. Do you want extra lights over the vanity? Do you want the heating function.One size does not fit all when it comes to a fan. When shopping for fans you’ll see several options but you need to take your wants needs and the physical conditions of your bathroom in order to choose the correct fan.

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