To remove excess moisture from your bathroom the fan needs to vent outside.
How to replace a bathroom wall fan.
For a fan and light switch with existing wiring splice the white wires and connect the grounds securely with wire.
Switch off the power at the fuse box.
Select your new fan.
Video tutorial on how to replace your bathroom exhaust fan in 5 minutes or less.
Remove the existing fan leaving the old duct work and wiring.
If not you must cut around.
This is essential in order to.
There are ductless vent fans that use a charcoal filter to remove odors but they do not remove excess moisture which is the main purpose of a bathroom vent fan.
When you know the switch has power this is indicative that you need.
If your old fan wasn t attached to a joist and there is a space between the joist and the ceiling hole attach lumber to the joist to build it out next to the hole so the fan can be screwed to solid wood.
Measure the ceiling opening and determine if it is large enough to accommodate your new fan.
Connect the red wire to one switch terminal and the black wire to the other terminal.
Step 4 attach fan.
The first step is to turn off the electricity of the bathroom from the breaker box.
Call up your local city or county government and ask if you re allowed to do home.
I ve replaced lots of this style broan fan and they are very popular.
Follow steps 3 10 of the new construction installation to complete.
Since a bathroom vent fan should run for 10 15 minutes after you finish your shower to remove all the moisture consider a fan that cuts on and off automatically using a moisture sensor or replace the wall switch with a timer.
Double check the type of fan you currently have.
Add a bathroom exhaust fan in the wall.
Check if a permit is necessary.
Preparing to replace the fan 1.
Connect power to both switches through two pigtails spliced to the feed wire.
On the side of the hole opposite the joist attach a piece of 1x lumber inside the hole.
Step 2 trace position of fan and cut out hole.
Step 3 make template and insert screws.
Turn the bathroom fan or combination light and fan on.