How to Install a Bathroom Exhaust Fan on First Floor: Who would have thought that installing a bathroom exhaust fan on the first floor would be difficult. Well, it’s not as easy as it sounds! Replacing an existing bathroom exhaust fan is less time-consuming as the connection is already there and you already know where you want to fix the fan. Installing a new exhaust fan and that too on the first floor…..you might want to brace yourselves!
Installing a bathroom exhaust fan on the first floor can get a little complicated, especially if there is no attic access.
However, if you would like to know further how to install a washroom exhaust fan on the first floor then read ahead!
- 1 A Simple Procedure to Install a Bathroom Exhaust Fan on the First Floor
- 1.1 Step 1: Decide on where you want To Install the Fan
- 1.2 Step 2: Create a Wiring Route from the Main Circuit Box
- 1.3 Step 3: Make Way for the Flex Duct to the Outside
- 1.4 Step 4: Make Space for Exterior Wall Hole
- 1.5 Step 5: Time to Connect the Vent Hood to the Duct
- 1.6 Step 6: Screw the Vent Hood to the Wall
- 1.7 Step 7: Make a Hole to Install the Fan
- 1.8 Step 8: Fit the Fan Housing
- 1.9 Step 9: Fasten Fan Housing Adapter to Duct
- 1.10 Step 10: Connect Wiring
- 1.11 Step 11: Fasten Fan Housing to Joists
- 1.12 Step 12: Install the Exhaust Fan Cover
- 1.13 Step 13: Check if the Exhaust Fan Works
- 2 Final Verdict!
A Simple Procedure to Install a Bathroom Exhaust Fan on the First Floor
Step 1: Decide on where you want To Install the Fan
The main reason for installing an exhaust fan is that it ensures proper ventilation takes place and keeps the bathroom from having a damp smell. Hence, you would want to place the exhaust fan at the highest ceiling of the washroom so that maximum air is exhausted. However, if you would like to place it above the shower then it needs to be connected to a GFCI circuit.
Next, determine where you would like to place the vent hood or where the flex duct would have an outside connection. When deciding this, we recommend that you chose a location away from any washroom windows or existing vent terminations.
Step 2: Create a Wiring Route from the Main Circuit Box
If you have to replace an existing fan then normally a wiring connection is already made. However, in this scenario, you need to route Romex wiring from the panel box. In this step, we suggest that you call in a professional electrician to help you out.
Nevertheless, if you would like to do it yourself then in the existing drywall (closed ceiling), take a drill to cut small holes through the joists. Next, fetch the wiring through the walls using fish tape. Now, pull the wire into the bathroom and cut a good length of the wire.
Step 3: Make Way for the Flex Duct to the Outside
You may find this step to be a bit tough but it is doable! To route, the flex duct to the outside depends if the ceiling is opened or closed. If the ceiling is open then routing the flex duct is easy, you can choose any place you want! You can fasten the flex ducts with straps that are fasted to the joists.
However, if the ceiling is closed then you would have to use a drill to make a hole next to the exterior wall. You must always remember not to duct the washroom exhaust fan in any wall space or the attic. This would lead the air to become damp, wood termites, or mold growing inside the wall cavity.
Step 4: Make Space for Exterior Wall Hole
After having routed the flex duct to the outside, cut a hole so that you can install the exterior vent hood to the duct.
You should always cut the exterior wall hole diameter larger than the flex duct diameter.
Step 5: Time to Connect the Vent Hood to the Duct
This step is quite easy! Join the flex duct to the vent hood adapter. The vent hood comes with a metal collar that can pull over the flex duct. Join the two using foil tape.
Step 6: Screw the Vent Hood to the Wall
After connecting the duct to the hood, you should install the vent hood cover to the outside wall.
Step 7: Make a Hole to Install the Fan
Cut an exploratory hole in the wall where you plan on installing the fan. You can either use a drywall saw or a keyhole to cut into the wall.
Always make a larger hole so that the fan flanges on the bottom can be accommodated. To know if you are on the right track, take a sneak peek into the hole to look at the wiring and duct.
Step 8: Fit the Fan Housing
Check if the fan housing fits properly in the space which you have made. If not then make the hole slightly bigger. You can use wood support for the ceiling joist to fasten the housing properly.
Step 9: Fasten Fan Housing Adapter to Duct
Take help from a family member in this step. Bring the fan housing near the ceiling where you have fixed the flex duct. Pull down the duct a bit and take it over the fan adapter. Secure the two using foil tape.
Step 10: Connect Wiring
ALWAYS cut off the house power before connecting the wires.
You will find the black, white and green wire. Using wire nuts connect the green wire with ground wire, black wire with black and white wire with white.
Having secured the wires, install the wiring box over the wire nuts.
Step 11: Fasten Fan Housing to Joists
You can secure the fan housing to the joists using nails or screws. Next, install the fan motor in the housing.
Step 12: Install the Exhaust Fan Cover
Several washroom exhaust fan cover comes with metal clips that can easily be fit into the fan housing.
Step 13: Check if the Exhaust Fan Works
The moment of truth! Turn on the bathroom power from the main panel and flip the switch. You can also plug the fan motor into the housing plug.
Test the exhaust fan to see if it’s working properly.
The next time if someone complains that installing a bathroom exhaust fan on the first floor is difficult, you can guide them through the process or help them install it!