Bath Fan - Square, No Cut, 110CFM, 1.5 Sones, AC Motor

A: First be sure to check the Products section of this web site for downloadable installation instructions. These provide in depth information about how to install your ventilating bath fan.

A: There are a few variables that can affect noise level. The length of your duct run, the amount of bends in your duct run and the size of your restroom. A shorter dust run is better for performance and noise level. You want avoid having a bend or elbow right at the connection to the outlet or fan housing. If you used a reducer fitting between your bath fan outlet and your house ventilation duct, then the noise generated by your bath fan can be louder than normal. This can be adjusted by changing the diameter of your house ventilation duct to match the size of the fan outlet. Lastly as stated on the box, you want to match your square footage as close to CFM rating as possible. So, if you have an 80 sq. ft. bathroom you would want to have an 80 CFM fan, again this helps with performance and noise.

A: There are a few variables that can affect ventilation performance. The length of your duct run, the amount of bends in your duct run and the size of your restroom. A shorter dust run is better for performance and noise level. You want avoid having a bend or elbow right at the connection to the outlet or fan housing. The less bends and turns your duct run has in general the better the fan will perform and sound. Lastly as stated on the box you want to match your square footage as close to CFM rating as possible. Keep in mind that ventilating bath fans require an air source to draw air up and out of your bathroom. If your bathroom door and / or window is closed, then there may not be enough air circulating in the room to help your fan clear the air. If you crack your door or window open a little, you will gain better performance from your fan.