I then removed the old fan so i could find a replacement that would fit without having to cut a bigger hole into the drywall.
Replacing bathroom wall fan.
Here s how to replace an existing vent fan with a new one.
If you can locate a joist cut drywall and handle basic electrical work you can do the whole job in about two hours and save about 200 on the installation.
Measure the ceiling opening and determine if it is large enough to accommodate your new fan.
Replacement kits designed for this purpose allow you to mount the new fan motor on a plate identical to the one that holds your existing fan motor.
Push the wire connections back into the housing and replace the junction box cover when you re done.
Buy the right size for your bathroom.
You can use the existing switch wires and ductwork.
Unlike older vent fans new models are much quieter and more efficient.
I temporarily taped a plastic bag over the hole after removing the fan.
When choosing a vent fan for your bathroom look for a model that is quiet 1 5 sones or less and moves enough cubic feet per minute cfm of air as discussed in sizing a bathroom vent fan.
Since the fan is also connected to the light and there isn t a window in the bathroom i set up a work light outside the door.
Switch off the power at the fuse box.
Make sure that you join the correct colored wires white to white black to back yellow to yellow etc.
Use the information below to select a fan.
If not you must cut around.
Remove the existing fan leaving the old duct work and wiring.
The easiest way to replace a bathroom vent fan is to keep the old housing and replace the fan and motor.
Follow steps 3 10 of the new construction installation to complete.
It s not the quietest model available but at 0 6 sones about 25 decibels it s a huge improvement over the old 4 sone about 60 decibels fan we re replacing.
Bathroom exhaust vent fans are needed to remove excess humidity that can lead to mold or mildew and cause damage to your walls or ceiling.
Also it helps to get a fan that s the same size as your existing fan so you won t have to adjust the size of the ceiling hole.
You ll need a stud finder a drywall saw a drill and screws and aluminum duct tape.
Video tutorial on how to replace your bathroom exhaust fan in 5 minutes or less.
I ve replaced lots of this style broan fan and they are very popular.
The installation is easiest if you re replacing an existing fan.