Tammy's Ten: Steps to Install a Bathroom Fan

Installing an exhaust fan in your bathroom is not a complicated task. As long as you have an electrical source nearby, you shouldn't need to consult a professional. Exhaust fans are essential for bathrooms with showers and help to remove excess moisture from the air. Whether you are renovating or having a problem with mold, see below for handy instructions.

1. Examine your attic and bathroom carefully before you select a unit to buy. Measure the distance between the roof joice and ceiling to ensure you purchase a vent box that fits.

2. Shop around to purchase a quality fan and don't forget the ductwork. You will need to purchase your ductwork separately and a band clamp to hold it in place. Steel flex ductwork is recommended over plastic in order to complete this task. It holds the airflow better.

3. Remove the exhaust fan from the box and examine the contents carefully. After selecting a spot on your bathroom ceiling, cut a tiny hole in the drywall. Insert a metal coat hanger through this hole and find it's location in your attic. This is where you will install the unit.

4. Once you have determined the location in your attic, you will need to clear a spot for working. Move any insulation away from the area in order to have a place to work. Wear long-sleeves, pants and gloves to protect your skin against possible irritations. A good quality facemask is also recommended, as you will be working a lot in the attic.

5. Put the fan box on top of the space with the hole and use a marker to trace it. This will ensure you have the proper cutting dimensions and keep drywall repairs to a minimum.

6. Cut the hole in the ceiling from the attic side, using the lines you traced. Using a small jigsaw is recommended, as a knife can cause the drywall to tear. This helps to keep your ceiling intact.

7. Place the fan box over the hole in the ceiling and attach the support braces to joists. A regular screwdriver does the trick but a cordless drill is handy. Push the plastic cover of the fan in place until you hear a click. The ductwork can now be attached to the fan box using your metal clamp.

8. Flex the ductwork to the proper length and point it at your soffit. If your soffit does not have built-in vents, you will need to buy one separately. Just cut a hole in your soffit above the ductwork and pop a vent in place. It is not recommended to vent through your roof unless you are re-shingling your house. This avoids the hassle of cutting your shingles and eliminates the creation of leaks.

9. Once your fan box and ductwork have been installed, you can connect the electrical wires. Attach the fan box wiring to the light switch of your choice and follow general electrical guidelines.

10. Once the exhaust fan has been completely installed, you should remember to replace insulation. You don't want unnecessary heat loss to occur because of a simple mistake. Clean up can now be completed.

To install an exhaust fan in your bathroom, you should have basic electrical knowledge. If you do not have an existing outlet nearby, you may want to consult a professional. Try to install the unit when the weather is cool, as you will need to spend some time in your attic. It should take you approximately four hours for this task and an extra hour for clean up. Good luck!