Cfm Rating For Bathroom Fan

In this case a fan with a cfm rating of 80 would probably be sufficient for your bathroom.

Cfm rating for bathroom fan.

Units on the market are designed to move air at a variety of rates. At 110 cfm the fan is at the upper end of power compared to most other bathroom fans. The purpose of a bathroom fan is to move air up and out thereby keeping the moisture in your home balanced and your bathroom clean and mold free. If your bathroom has a toilet or shower area enclosed by a door it s a good idea to install a separate exhaust fan for that area.

A bathroom exhaust fan that s rated 0 7 sones runs much quieter than a bathroom fan that is rated 4 0 sones. After calculating your required cfm make sure to check the rating of any fan your purchase. 5 x research source a fan with too low of a rating won t remove moisture effectively while buying a fan with too much power may lead to unnecessary noise as more powerful fans tend to. The bigger your bathroom the higher the cfm rating you ll need.

If the enclosed space is small a 50 cfm fan should suffice. Purchase a bathroom fan with the required cfm rating or higher. Look for the cfm rating on any fan you re considering to see how much air the fan moves per minute. Determine the size of your bathroom with this formula.

A fan s ability to move air is measured in cubic feet per minute cfm. The higher the sone rating a bathroom fan has the noisier that model is when it s running i e. Another bathroom exhaust fan of the type purchased by commercial establishments pulls 470 cfm at the cost of 8 0 sones. Length x width x height x 0 13 minimum.

Otherwise use the appropriate calculation based on the room size. Vent fans are rated by the number of cubic feet of air they move per minute cfm and it s important to buy a large enough fan for the size of your bathroom. A fan should have a cfm rating high enough to replace the air in your bathroom at a rate 8 times per hour. Noise the noise emitted by an exhaust fan is rated in sones and most fans have a sones rating.

The noise level of a bathroom fan will be indicated by the manufacturer in what is known as sones. So if you have a bathroom that is 12 feet long 15 feet wide and 10 feet tall then it has a volume of 1800 cubic feet 12 x 15 x 10 and a cfm of 240. The result is the cfm or cubic feet per minute rating required for your bathroom fan. Just remember that the fan needs airflow to do its job.

Here are a few tips. Included gfci wiring harness. Bathroom vent fans serve an important function by removing humid air from your home to prevent mold and mildew from forming. With a sones rating of 1 0 it is also on the quiet end of the spectrum.

The cfm represents the airflow required to completely exchange the air in your bathroom 8 times in one hour.