A well-functioning exhaust fan helps eliminate mould, mildew, and humidity from your bathroom. And when it’s time for a change, it’s easy to replace. Most people think replacing a bathroom fan is critical and time-consuming, but it’s not so. If you have already a connection and wiring, you can replace it within an hour.
Here’s how to do it.
At first, you need to gather these tools and supplies.
- Drywall knife
- Circuit tester
- Drill and bits
- Wire connectors
- Measuring tape
- Bathroom exhaust fan
- HVAC tape
It’s a good idea to measure the dimensions of your existing bathroom fan and purchase a model that will be fit with the previous box.
Part 1: Remove the existing fan.
Step 1: Safety check.
Turn off the power source by shutting off the breaker. Before starting a replacement, always check this point.
Step 2: Remove cover and motor.
Carefully do this step. Remove the grill cover by gently pulling down and squeezing both springs together. Then, remove the fan motor housing with a screwdriver and unplug the unit from the inside receptacle to remove the motor.
Step 3: Disconnect wiring.
Open the electrical junction and disconnect all of the wires. This step is a pre-requirement for removing the box. Safely disconnect the wire because you need those wires again for installing a new one.
Step 4: Remove pipe and wires.
Next, unscrew the rough-in box and push it up into the ceiling and remove the tape from the vent pipe and disconnect.
Loosen the screws on the Romex connector and remove the wires from the box.
Step 5: Remove the rough-in box.
Now you can easily remove the box. We can now remove the old fan rough-in box from the ceiling. This is the final step of removing your old bathroom ceiling fan.
Part 2: Install new fan.
Step 1: Prepare a new fan.
Remove the fan and motor housing from the new vent fan. Install a new Romex connector or bushing sleeve into the half-inch hole of the electrical junction area in the rough-in box.
Next, attach the vent flapper, making sure it is positioned with the flapper in the down position. Tighten all screw perfectly; otherwise, it may create noise.
Step 2: Connect wire.
Now, slide the house wiring into the connector or sleeve and tighten the screws of the connector. Twist together the green wire on the fan and the house ground wire and secure with a wire nut.
Repeat the process with the two black wires and then the white wires. Next, replace the cover on the electrical junction box.
Step 3: Attach vent pipe.
Push the rough-in into the ceiling and place the flexible vent pipe over the flapper, pushing it on 2 inches. Then take a piece of foil tape and wrap it around the pipe. Make sure there is no licking at the joining point.
Step 4: Secure the new unit.
Place the new unit back into the cut opening. Use one-inch drywall screws to secure the unit to the joists.
Now plug the fan into the receptacle of the unit. Put the motor housing into the rough-in box and secure it with a screw.
Step 5: Attach fan cover.
Install the new vent fan grill by pinching together the spring arms and sliding them into the slots on the fan, then push up to secure.
Time to Replace a Bathroom Fan
This type of fan is not expensive, and the repairing cost might be near to a new fan. So, if your fan begins to make noise, or if you notice it cannot remove steam perfectly during the bath, or if it fails completely, you should think of a new one.
Most modern fan systems are housed in a modular unit, a box with all electronics and mechanical components pre-installed. This makes the process of replacing the part a lot easier.
If you follow our step by step guide, replacing a fan will not be a difficult job. Always make sure you are safe. Disconnecting the fan housing from the ceiling joist will probably be the most challenging part. If the ceiling joists with metal tabs are nailed, you will need to go into the attic to remove the housing.