How To

Steps To Install An Exhaust Fan On The Bathroom

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Today’s installing a bathroom fan is a nice solution to create an air circulation in a space-less bathroom to make a ventilation for air circulation. Without good ventilation, any moisture-laden air will appear to grind the bathroom paint and also make an odors appear on the bathroom to make the bathroom experience seems worse.

Meanwhile, bathroom exhaust fan installation is not an easy projects to completes. Because this project of work focus on the physical rigors over a ladder and the work area is above your head.

Then, along with another difficult work of crouching on your attic and wear a dust mask or respirator. Further, along with the physical work, bathroom vent fan installation take a time to understand. Because it involves 120v extra on power source and another extends ducting no more than six feet.

Therefore, according to many sources that many building codes, one bathroom exhaust are not required. A bathroom need a least 3 feet square in a area that open a halfway to substitute for exhaust fans.

Further, Before I give you the steps on how to install exhaust fans on the bathroom. I suggest to you to prepare the equipment first.


  • Bathroom exhaust fan
  • Six-foot ladder to access the attic
  • Safety glasses
  • Dust mask or respirator
  • Reciprocating saw
  • Flexible ducting
  • Cordless drill
  • 1/2-inch drill bit
  • Pencil
  • Drywall jab saw
  • Screws
  • Stud finder
  • Round wall vent or roof vent cap, depending on whether you are exhausting to the side wall or roof
  • Exterior grade silicone caulk

Then, before we start I suggest to you to make a sure that you already turn off the electricity to ensure your safety during your installing process.

So, when you are ready to set the equipment above. Let’s straight to the steps.

01. Find The Nearest Power Source

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Exhaust vent fan will be planted on the ceiling. Then, on how to install exhaust vent you need to find the closets power source that useful to slue the fan.

If you have high supplies electrical code, you can share your bathroom lighting circuit with the fan. Because, bathroom lighting circuit can supplies the power on your bathroom’s ceiling light. Then, you can substitute the light for a fan/ light combination.

Further, if you faces any obstacle on the maintain the electricity. Don’t be hesitate to contact the experts.

02. Set The Vent Point Location

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The air that resulted from the fan should be pointed outsides. Then, if it possible you may create a duct from the fan and straight to the outside on the roof or the other side of the wall.

Moreover, the rule of suitable location for exhaust fan is :

  • A direct route from the fan to the outside
  • Six feet long or less from the bathroom fan to the exit point
  • In the bathroom interior, not in a hallway
  • Located close to the shower, tub, or shower/tub combination, as this is the area that produces the most moisture
  • As straight as possible to avoid sharp bends that can impede airflow

Don’t forget to drill a locator hole that played a role as a center of the intended location.

03. Cut The Exterior Vent Location


In this steps, you need to make a sure that you cut the outside part where the locator placed. This steps purposed to create a hole as an air sources of the circulation.

04. Cut The Bathroom Interior To Place The Fan

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If the fan use paper template, you may use the template to mark the location of the ceiling. Then, if there is no template, you may use metal fan housing to put the fan on the ceiling.

05. Attach The Bathroom Fan

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Access the attic and bring your light, cordless drill, screws, and bathroom fan housing. Place the fan in the cut-out hole so that the bottom edge of the fan is flush with the bottom of the ceiling drywall. You will need a partner for this step, as you cannot see the ceiling from this position.

Screw the fan into the side of the joists with the cordless drill. If you cannot use the side of a joist as an attachment point, your fan may come with suspension brackets. If not, you can purchase these separately. Brackets will allow the fan to be suspended in a position that is not adjacent to a joist.

While you are still in the attic, fit the electrical wire through the side of the housing so that roughly seven inches of the wire extends into the housing.

When the place already prepared for the fan. you may attach

06. Line The Fan To The Exterior

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The next step is re-check on your bathroom, then, verify the fan placement. Make a sure that the flexible of the fan connect to the attic. Make a sure that the fan and it’s flexible work properly.

07. Connect The Bathroom Fan To The Housing System

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After all, insert the fan unit into the housing systems. Then, at this point, you will get the ends of electrical wires and hard-wire them into the unit.

Connect them into the system, and turn on the circuit breaker back on. Then, do system check on the bathroom through turn on the fan.

In short, installing an exhaust van will be confusing if you don’t follow the rule. But, if you follow those steps above, you will get an ease way on how to do that. Have a great day!

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