How to install bathroom wall exhaust fans

Written by cameron easey
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How to install bathroom wall exhaust fans
A bathroom exhaust fan can be installed in a ceiling or a wall. (View of Hotel Bathroom image by TekinT from

An exhaust fan is needed to vent warm air and steam out of a bathroom. Most types of exhaust fans are installed in a ceiling but they can be installed in a wall as well. Installing a wall exhaust fan in a bathroom requires a wall that is on the exterior of the house. You can install a bathroom wall exhaust fan by first running an electrical wire to the bathroom.

Things you need

  • Stud finder
  • Fan template
  • Pencil
  • Drywall saw
  • Power drill
  • Jigsaw
  • Screwdriver
  • Wire covers

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  1. 1

    Use a stud finder to locate the studs in the wall. Mark the location of the studs with a pencil.

  2. 2

    Place the interior fan template on the wall and trace around it to make an outline. The template is included with the wall exhaust fan.

  3. 3

    Cut around the outline with the drywall saw. Take out the piece of drywall and set it aside.

  4. 4

    Place the housing of the fan on the inside of the outer wall and draw a second outline around the inner duct. Make a mark for the location of the screw holes for the fan housing.

  5. 5

    Drill a hole through the marks you made for the screw holes in Step 4. The holes will be used to align the exterior template.

  6. 6

    Go to the outside of the house and place the exterior template over the holes you made in Step 5. Trace around the template to make an outline.

  7. 7

    Cut around the outline with your jigsaw. Take the piece out of the wall and set it aside.

  8. 8

    Go back to the bathroom and connect the power supply for the fan. Use a screwdriver to secure the green wire to the ground screw. Twist together the white wires and screw on a wire cover. Repeat this step for the black wires.

  9. 9

    Plug the fan motor into the electrical connection and then mount the fan in the wall. Using the power drill, secure the fan to the wall with screws.

  10. 10

    Turn on the power to the bathroom and test the fan. Place the cover on the fan to complete the installation.

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