How to install a Bath Fan:

The cfm’s are the rate of time it requires the fan to replace the air in the area of a room, cubic feet of air exchange per minute, this measurement is on all the manufactures bath fans. WE want this to be efficient to displace the moisture content in the air from the humidity in the bathroom coming from the hot water during a shower or bath. To calculate the size of bath fan you need just multiply the width x height x length of the bathroom and multiply that number x 0.13 to equal the minimum CFM’s for your bathroom fan. So typically speaking most will go over a little and some fans are much more quite than others. Noise coming from the fan is measured in sones quite fans are 1.5 sones or less. Your needs can be accommodated through any company once you made that decision. Fans today come with heaters and or lights as well. lets get started, turn power off and remove the grill and unplug and remove the motor in the housing. Now get to the attic disconnect the exhaust and electrical wiring. When going to a larger fan with more features you might change the exhaust tubing to 4″ or 6″ to allow it’s capacity needed. The finish ceiling also may need cutting bigger within the joist bay and follow the manufactures instruction. Get another helper to hold in place the new housing flush with the finish ceiling while you fasten the box and hook up all the components up in the attic. The exhaust tubing needs to get fresh air from any vent above which may or may not be close. Your ready to turn power back on and enjoy the fruits of your DIY bath fan install for years to come.

Bathroom exhaust fans at Amazon.com way too many to count!on the web as well with Ebay both have returned items they must sell as new with even greater savings. Home Depot will give you local store prices and availability before you take the trip down there for your in store pick-up.