How To Install A Bathroom Exhaust Fan Fixit Express Home Repair and Handyman Service

How To Install A Bathroom Exhaust Fan

The bathroom-exhaust-fan is essential for providing ventilation to remove odors and potentially damaging moisture. When you operate your exhaust fan, it removes odors and moisture from your bathroom.

They typically vent through the ceiling and attic (or through the wall) to the outdoors. As you can imagine the warm water from Showering, bathing, and other activities produce a lot of moisture, and moisture can cause a lot of damage to your home. There are many unfortunate side effects this moisture can cause such as peeling paint and wallpaper, damaged drywall, warping doors, and mold growth, none of which you want in your bathroom.

Proper bathroom ventilation achieved by the bathroom-exhaust-fan is also important in ensuring the health of your family.

Before Installing a Bathroom-Exhaust-Fan If you have an existing fan, and its just not working then replacing it is fairly self explanatory. Youre just replacing the new one for the old using the wiring that is already in place. The most critical task is to shut off the electricity at the breaker box prior to beginning the installation. Follow the instructions that will come with the fan for more details.

There are many different types of exhaust fans available, from the simplest fans, to more elaborate ones with built in lights, heaters and timer switches. Some models are designed to be mounted on the ceiling, while others are mounted to the walls.

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data-ad-client=»ca-pub-8692914904228558″

data-ad-slot=»2854612232″>

If youre upgrading from a simple exhaust fan to a more elaborate one you may need to upgrade your wiring from a 2-wire set up to a 3-wire set up or if you are adding a fan to a bathroom that never had an exhaust fan then you will have to add 3-wire cable from the unit to the switch to accommodate a double switch at the electrical box. This will allow you to operate the light and fan independently of each other.

Handyman Safety Tips: As just mentioned, the type exhaust fan you choose will determine the type of wire you will need. Simply ask yourself this question: are the light and fan independent to each other? If you are replacing a broken fan/light combo then the installation is easy since the wiring is already in place.

If you want the fan to turn-on when you turn-on the light then a 2 wire switch is sufficient Even though wiring the switch is the last step in the project follow the steps below when working with electricity to ensure your safety:

In the photo there is a 2-wire cable coming in from the bottom and supplies the current to the switch. The hot (black wire) is connected to the input side of the switch, the neutral (white) wire is secured to the neutral white going to the unit with wire nuts.

The bare copper (ground) wires are wire secured together with wire nuts. The 3-wire NM cable that goes to the unit has two hot wires (usually, one black/one red) that are attached to the switch one to the light and one to the fan.

  • Check with you citys local permit authority

to see if a permit is required.

  • Turn off the power at the circuit breaker.
  • Using a circuit tester, ensure the the power

    is off.

  • Mark or lock the circuit breaker box to make

    sure know one accidentally turns on the power.

  • Dont overload the circuit, have a licensed

    electrician add a new circuit if needed.

  • Wear safety gear to protect eyes and a dusk

    mask.

  • Have your work check by the inspector if

    required.

  • you may need to complete this handyman project.

    • Screwdrivers (phillips & straight)
    • Jig Saw or rotary (drywall saw) tool
    • Drill/driver with drill bits
    • Electrical circuit tester
    • Marking Pencil
    • Wire strippers w/ cutter
    • Hammer (you just never know)
    • Tape measure

    Materials

    you may need to complete the installation.

    • New bathroom-exhaust-fan unit
    • Soffit Vent
    • Flexible dryer vent duct
    • Wire nuts
    • Electrical cable (2 wire or 3 wire w/ground NM

    Handyman-Tip: If youre replacing an existing unit many of the material items may already be in place such as the flexible duct and soffit vent or wire nuts. Inspect each item to make sure they are functioning correctly, replace if necessary.

    How To Install A Bathroom Exhaust Fan

    Step 1 As I stated previously, make sure you shut off the power to the circuit prior to starting any work. Secure the breaker box by locking it shut. If the box has no lock tape it shut. Apply a note to the outside warning anyone from turning on the circuit while you are working.

    Step 2 Move to the attic and remove any insulation from around the area of the ceiling where you plan to mount your new bathroom-exhaust-fan. If your putting in a new fan unit where a light exists, disconnect the wires from the fixture so it can be removed. If you replacing an old unit, disconnect the wiring and remove the old unit.

    Step 3 Check the position of the new fan. If possible put the unit where you can fasten it directly to the ceiling joists. Depending upon where the existing light fixture is positioned, you may have to add braces between the joist to provide a secure attachment point for the fan unit.

    Step 4 Place the Fan housing on the ceiling between the joists where it is to be mounted and mark the perimeter of the cut. Mark the corners by drilling holes with a drill. Cut the drywall away with a rotary drywall saw,hand held drywall saw or Jig saw.

    Step 5 Now that youve defined the location and cut out the drywall, secure the fan into position.

    Step 6 Now were ready for the cable installation. Run the wire from the Bathroom-exhaust-fan to the light switch. By now you know which wire to run if youve purchased a high speed low drag unit with a timer or heater, you may need to run extra cable. Consult the manufacturers directions and plan ahead.

    Step 6 Now youre ready to connect the wires to the bathroom-exhaust-fan using wire nuts. Simply follow the wiring instructions supplied by the manufacturer. Once you have the connections secured push the wires into the wiring box and secure the cover.

    Step 7 Refer to the manufacturers instructions about whether or not the insulation can come in contact with the bathroom-exhaust-fan house unit. Some units can generate allot of heat and require that the insulation be a certain distance from the unit so READ THE INSTRUCTIONS.

    Step 8 Connect the duct hose to the fan housing and route it to the soffit or roof vent.

    Handyman Tip: Its important to read and follow the manufacturers instructions on installing venting the fan. The goal of the fan is to remove unwanted moisture from the bathroom, the last thing you want to do is transfer the moisture to a different area of your home. Do not vent the fan directly into the attic, that would certainly create just such a problem.

    Step 9 Install the unit cover from inside the bathroom and wire the cable to the wall switch. Again refer to the manufacturers directions for a correct installation.

    Be sure to check out our other Bathroom DIY posts and pages:

    How To Install A Bathroom Exhaust Fan

    The bathroom-exhaust-fan is essential for providing ventilation to remove odors and potentially damaging moisture. When you operate your exhaust fan, it removes odors and moisture from your bathroom.

    They typically vent through the ceiling and attic (or through the wall) to the outdoors. As you can imagine the warm water from Showering, bathing, and other activities produce a lot of moisture, and moisture can cause a lot of damage to your home. There are many unfortunate side effects this moisture can cause such as peeling paint and wallpaper, damaged drywall, warping doors, and mold growth, none of which you want in your bathroom.

    Proper bathroom ventilation achieved by the bathroom-exhaust-fan is also important in ensuring the health of your family.

    Before Installing a Bathroom-Exhaust-Fan If you have an existing fan, and its just not working then replacing it is fairly self explanatory. Youre just replacing the new one for the old using the wiring that is already in place. The most critical task is to shut off the electricity at the breaker box prior to beginning the installation. Follow the instructions that will come with the fan for more details.

    There are many different types of exhaust fans available, from the simplest fans, to more elaborate ones with built in lights, heaters and timer switches. Some models are designed to be mounted on the ceiling, while others are mounted to the walls.

    style=»display:inline-block;width:728px;height:15px»

    data-ad-client=»ca-pub-8692914904228558″

    data-ad-slot=»2854612232″>

    If youre upgrading from a simple exhaust fan to a more elaborate one you may need to upgrade your wiring from a 2-wire set up to a 3-wire set up or if you are adding a fan to a bathroom that never had an exhaust fan then you will have to add 3-wire cable from the unit to the switch to accommodate a double switch at the electrical box. This will allow you to operate the light and fan independently of each other.

    Handyman Safety Tips: As just mentioned, the type exhaust fan you choose will determine the type of wire you will need. Simply ask yourself this question: are the light and fan independent to each other? If you are replacing a broken fan/light combo then the installation is easy since the wiring is already in place.

    If you want the fan to turn-on when you turn-on the light then a 2 wire switch is sufficient Even though wiring the switch is the last step in the project follow the steps below when working with electricity to ensure your safety:

    In the photo there is a 2-wire cable coming in from the bottom and supplies the current to the switch. The hot (black wire) is connected to the input side of the switch, the neutral (white) wire is secured to the neutral white going to the unit with wire nuts.

    The bare copper (ground) wires are wire secured together with wire nuts. The 3-wire NM cable that goes to the unit has two hot wires (usually, one black/one red) that are attached to the switch one to the light and one to the fan.

    • Check with you citys local permit authority

    to see if a permit is required.

  • Turn off the power at the circuit breaker.
  • Using a circuit tester, ensure the the power

    is off.

  • Mark or lock the circuit breaker box to make

    sure know one accidentally turns on the power.

  • Dont overload the circuit, have a licensed

    electrician add a new circuit if needed.

  • Wear safety gear to protect eyes and a dusk

    mask.

  • Have your work check by the inspector if

    required.

  • you may need to complete this handyman project.

    • Screwdrivers (phillips & straight)
    • Jig Saw or rotary (drywall saw) tool
    • Drill/driver with drill bits
    • Electrical circuit tester
    • Marking Pencil
    • Wire strippers w/ cutter
    • Hammer (you just never know)
    • Tape measure

    Materials

    you may need to complete the installation.

    • New bathroom-exhaust-fan unit
    • Soffit Vent
    • Flexible dryer vent duct
    • Wire nuts
    • Electrical cable (2 wire or 3 wire w/ground NM

    Handyman-Tip: If youre replacing an existing unit many of the material items may already be in place such as the flexible duct and soffit vent or wire nuts. Inspect each item to make sure they are functioning correctly, replace if necessary.

    How To Install A Bathroom Exhaust Fan

    Step 1 As I stated previously, make sure you shut off the power to the circuit prior to starting any work. Secure the breaker box by locking it shut. If the box has no lock tape it shut. Apply a note to the outside warning anyone from turning on the circuit while you are working.

    Step 2 Move to the attic and remove any insulation from around the area of the ceiling where you plan to mount your new bathroom-exhaust-fan. If your putting in a new fan unit where a light exists, disconnect the wires from the fixture so it can be removed. If you replacing an old unit, disconnect the wiring and remove the old unit.

    Step 3 Check the position of the new fan. If possible put the unit where you can fasten it directly to the ceiling joists. Depending upon where the existing light fixture is positioned, you may have to add braces between the joist to provide a secure attachment point for the fan unit.

    Step 4 Place the Fan housing on the ceiling between the joists where it is to be mounted and mark the perimeter of the cut. Mark the corners by drilling holes with a drill. Cut the drywall away with a rotary drywall saw,hand held drywall saw or Jig saw.

    Step 5 Now that youve defined the location and cut out the drywall, secure the fan into position.

    Step 6 Now were ready for the cable installation. Run the wire from the Bathroom-exhaust-fan to the light switch. By now you know which wire to run if youve purchased a high speed low drag unit with a timer or heater, you may need to run extra cable. Consult the manufacturers directions and plan ahead.

    Step 6 Now youre ready to connect the wires to the bathroom-exhaust-fan using wire nuts. Simply follow the wiring instructions supplied by the manufacturer. Once you have the connections secured push the wires into the wiring box and secure the cover.

    Step 7 Refer to the manufacturers instructions about whether or not the insulation can come in contact with the bathroom-exhaust-fan house unit. Some units can generate allot of heat and require that the insulation be a certain distance from the unit so READ THE INSTRUCTIONS.

    Step 8 Connect the duct hose to the fan housing and route it to the soffit or roof vent.

    Handyman Tip: Its important to read and follow the manufacturers instructions on installing venting the fan. The goal of the fan is to remove unwanted moisture from the bathroom, the last thing you want to do is transfer the moisture to a different area of your home. Do not vent the fan directly into the attic, that would certainly create just such a problem.

    Step 9 Install the unit cover from inside the bathroom and wire the cable to the wall switch. Again refer to the manufacturers directions for a correct installation.

    Be sure to check out our other Bathroom DIY posts and pages:


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