How To Install Exhaust Fan In Your Bathroom?

If you have to wipe the mirrors in your bathroom every time you take a bath and the doors and windows need to be left open to get rid of the odor, then it is time to install an exhaust fan.

Bathroom fans will help suck out the moisture and act as an odor eliminator like poo pourri scent. You do not have to call in a technician, this is something you can do on your own.

Choose The Right Fan

installing bathroom fan

There are 2 things you will need to consider when choosing the exhaust fan.

  1. CFM: This stands for Cubic Feet per Minute. The size of the room will determine the CFM you choose. A small room can do with 50-60 CFM, a medium one will do with 70-90 CFM while a large room will be 100 plus CFM.
  2. Sones: This will tell you how loud the fan is, the higher the sones, the louder the fan. Most people are comfortable with sones of 2.

Tools For Installation

Once you have chosen the right bathroom exhaust fan, then you need to ensure you have the right tools so that you do not go running to the hardware store in the middle of the task. This is a list of the main tools and material you will need.

  • Fan and all its accessories.
  • Flexible Duct.
  • Screws.
  • Screwdriver.
  • Utility knife.
  • Jab Saw.
  • Saw.
  • Drill.
  • Roofing nails.
  • Caulk.
  • Pliers.
  • Wire nuts.
  • Straps.
  • Sealant.
  • Pencil.

How To Install Exhaust Fan In Your Bathroom?

Now you have the tools and material, it is time to get started.

  1. Step1: Identify the place where you are going to place the fan, it is best not to place it directly over the bathtub, better over the toilet if there is one in there as it will also help when it is acting as an odor eliminator.
  2. Step 2: Hold the fan unit to the ceiling in the position you intend to install it and mark its outline with a pencil. You can now cut out the drywall following the outline drawn by the pencil.
  3. Step 3: On the roof, you will also map out the outline of the roof vent and then cut out the outline drawn. The hole should be circular. In some cases, you may choose not to have a roof vent and instead install a side vent where there is already an exit for the vent, in which case you can ignore this step.
  4. Step 4: Now you have holes for the vent and for the fan so it is time to fit the fan. Slide the fan into the square hole in the ceiling and then screw it safely into the ceiling according to the instructions from the manufacturer, ensure that the right screws go into the holes. Go into the ceiling and install the insulation around the fan. Leave a 6inch gap between the fan and the insulation. Use a piece of 2 by 4 to fit between the joists, separating the fan from the insulation.
  5. Step 5: To install the roof vent, slide the top flange under the shingles on top of it and let the bottom flange rest on the shingles below. Use roofing cement to seal the flanges. Use roofing nails to secure the vent flanges. Work from the bottom up applying roofing cement to the joints. Cover the existing shingles at the top with another layer of shingles above the vent.
  6. Step 6: Slide the clamps over the flexible duct on both ends and then connect one end to the fan and another to the vent and then tighten the claps to hold the duct securely over the fan and vent. To ensure no air escapes, use duct tape around the joints to seal it off.
  7. Step 7: Ensure the power is switched off from the main switch and then start to wire the fan. Once again consult the manual to ensure that you do the wiring correctly. Usually, you will have just 3 wires to connect from the fan to the switch and where they connect, you can cap them with wire nuts and then use insulating tape on any part that may be exposed.
  8. Step 8: Connect the wires to the switch as per the instruction manual and do the same with the ends where the wires connect.

You are now good to go, turn on the main power supply and test your new fan.

Clyde Mitchell

I run a hardware store nearby Court Anaheim, CA. Over the last 7 years, I have been blogging about home improvement and yes, I own From me and this website, you can expect some useful tips on great ideas for a modern bathroom.

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