How to Install a Bathroom Exhaust Fan
Nov 09, · It's easiest to install a bathroom vent fan if you’re replacing an existing fan. You can use the existing switch, wires and ductwork. You can use the existing switch, wires and ductwork. . Aug 30, · How to Install a Bathroom Vent Fan Step 1: Bath Vent Overview. A bathroom without a ventilation fan is like a fireplace without a chimney: If you fail to Step 2: Drill a Reference Hole. Draw a mark on the bathroom ceiling where you'd like to install the vent fan. For Step 3: Mark the Ceiling.
But more importantly, it will help prevent moisture-related problems, such as the growth of mold and mildew. In this particular installation, Tom ran the exhaust duct into the attic and through a sidewall to the outdoors. Other venting options includes running the duct up through the roof or down through the soffit. Note that the bathroom vent fan must always exhaust to the outdoors; never allow the duct to simply blow into an attic, crawlspace or other enclosed area.
Also, the installation of the bathroom exhaust fan will go much quicker if you ask a spouse or friend to help be in the attic while you work from below, or to hand you tools while you're on the ladder.
A bathroom without a ventilation fan is like a fireplace without a chimney: If you fail to pull the moisture generated in the bathroom out of there, it will migrate into the walls and grow mold and mildew, or blister paint and peel wallpaper.
One reason many households still don't have bath fans is that they can be intimidating to install. The bathroom here is below an accessible attic, so Tom ran the exhaust duct across the attic and out a gable end. Bathroom vent fans are rated by how many cubic feet of air they can move in one minute, known as the CFM rating.
To determine which size fan to buy for your bath, multiply the room's square footage by 1. For example, a square-foot bath would require a CFM-rated fan. Fans also have a sound rating, measured in sones. A modern refrigerator operates at about one sone. Vent fans range from as low as 0. You'll how to find out exchange server version both the CFM and sone ratings printed on the vent fan's box.
Now use the reference hole to determine the exact position of the fan. Measure the vent fan housing. Try to position how to install vent fan in bathroom vent fan directly between two joists near your reference hole. Take into account any nearby pipes or other obstructions.
Note the final position of the vent fan in relation to the reference hole. Use the reference hole as a landmark to transfer your measurements from the attic to the ceiling. Use a layout square or framing square to draw what is 37 degrees celsius in fahrenheit rectangular outline of the intake port onto the ceiling.
When you're almost finished making the rectangular cutout, support the waste piece with one hand to keep it from falling and possibly taking some of the surrounding drywall or plaster ceiling with it.
Aim the how to use chainfire 3d straight up and secure it to the port with foil duct tape. Remove the knockout hole on the side of the fan's housing and attach a cable connector. Slide the four metal brackets into the tabs protruding from the sides of the vent fan. Set the vent fan down into place between the joists, centered on the ceiling hole.
Take the flexible duct that comes with the wall cap kit and slip one end over the elbow attached to the vent fan. Secure it with foil duct tape. Feed the existing or new electrical cable through the connector, then tighten the connector screw to secure the cable.
The location should be between two wall studs and within 6 feet of the vent fan. Take a couple of reference measurements so that you can locate the spot from outside—from a nearby window, soffit, or other feature you can access from outdoors. Mark the hole location on the siding, using the reference measurements. Cut the duct hole through the house wall using a 4-inch hole saw. Grab the free end of the flexible exhaust duct and carefully stretch it to the outside wall.
Attach the duct end to the wall cap's connector duct with foil duct tape. From outside, slide the wall cap into the duct hole and push it tight against the house siding. Cut a foam-rubber gasket to fit into any spaces where the wall cap doesn't contact the siding.
Remove the wall cap how to live a simple and happy life apply a bead of silicone adhesive to the siding and gasket around the hole. Slide the wall cap into the hole and press it against the siding. Save the screws. Next, unscrew the built-in receptacle from inside the housing to expose its wiring.
Again, save the screws. Use wire nuts to join same-color wires how to start mahila gruh udyog the ones from the electrical cable you fed into the housing in Step 5: white to white, black to black. Wrap the bare copper wire under the green grounding screw inside the housing and tighten the screw. Place the electrical receptacle back into position and secure it with the two screws removed from it earlier.
Secure the motor to the housing with the screws removed from it earlier. Hold the fan's plastic grille close to the ceiling. Slip the grille's mounting wires into the slots inside the fan housing.
Push up on the grille until it's what is an endocrinology specialist against the ceiling. Turn the power back on and test the fan. Email required. By signing up, you agree to our Privacy Notice and European users agree to the data transfer policy.
Attach the Bathroom Fan to the Joist 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.
Installing a bathroom fan is just the solution you need for spaces that never seem to get dry. Moisture-laden air is the enemy of bathroom paint, fabrics such as towels and curtains, windows and doors, and window sills.
Expelling bathroom moisture and odors makes for a far more pleasant bathroom experience for all. While bathroom exhaust fan installation is not the easiest home improvement project, the bulk of the work is centered around the physical rigors of standing on a ladder and working above your head, along with the more taxing work of crouching in your attic while wearing a dust mask or respirator.
Aside from the physical work, bathroom vent fan installation is not difficult to understand, as it involves only one V power source and one run of flexible ducting that extends no more than 6 feet. According to many building codes , bathroom exhaust fans are not required. A bathroom window that is at least 3 feet square in area and which opens halfway can substitute for exhaust fans in many municipalities.
Section R of the International Residential Code discusses light and ventilation regulations. If you wish to use a window in place of a fan, verify this with your local permit office. Two issues often concern homeowners taking on this project: power and venting to the outside. Most residential bathroom fans use AC V electrical lines. These instructions offer tips for finding live electrical cables and running them to the correct location.
Venting means that after air from the bathroom is drawn into the exhaust fan; it is blown through a connected flexible duct and out of the house through a hole in the side of the house or roof. Since this is a new installation, not a replacement, your bathroom will not have ducting. However, as long as you can access the attic area above the bathroom ceiling, you will be able to route the flexible tubing outside. Turn off the electricity to the existing ceiling light by flipping off the circuit breaker at the service panel.
Locate your attic access door and enter it via the ladder, bringing your respirator and your portable light. The bathroom vent fan will be installed in the ceiling. You may already have power running to the exact point where you intend to install the bathroom vent fan.
Depending on your local electrical code, you may be able to share your bathroom lighting circuit with the fan. The bathroom lighting circuit usually supplies power to your bathroom's ceiling light. If your code requires you to run a dedicated circuit for the fan, you can run a new cable from the service panel to the bathroom ceiling area. If you do not feel comfortable establishing new circuits and working with the service panel, this would be time to contact an electrician to complete this task.
Air exhausted by the fan must exit outdoors. Thus, you will need to run a duct from the fan to either the roof or a side wall. If at all possible, run the flexible ducting to a side wall, as this helps you avoid shingle work and the possibility of roof leaks. Ideally, the rule of thumb for vent location is to choose a spot that is:. Drill a locator hole at the center of the intended location.
Depending on where you intend to exhaust to the exterior, access either the side wall or the roof of the house. Bring your round vent for walls or vent cap for roofs. Also bring your reciprocating saw, cordless drill, pencil, and silicone caulk. Situate the round vent or vent cap across the locator hole. With the pencil, scribe a circle where the vent or cap will fit. Use the reciprocating saw to cut the circle, with the locator hole as a start point for the saw blade. Attach the round vent or roof cap with screws, first applying silicone caulk to ensure a watertight fit.
On a roof, you will need to slip the flashing of the roof cap under the shingles above the midsection of the vent opening to ensure a watertight installation.
From below, use the stud finder to locate the joists in the bathroom ceiling and lightly mark with a pencil. If the fan comes with a paper template, use the template to mark the intended location of the fan in the ceiling. If there is no template, use the metal fan housing itself leave the fan assembly out for now. Many bathroom fans screw directly to the side of the joist. If so, place the template or housing parallel to a joist when making the cut lines.
Cut out the drywall carefully with the jab saw. 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. Go back down to the bathroom and verify the vertical placement of the fan. Gather your flexible ducting and take it back into the attic. Attach the flexible tubing to the fan and the vent.
Ensure that the tubing runs as smoothly and directly as possible. In the bathroom, insert the fan unit into the housing, per the manufacturer's instructions. At this point, you will strip the ends of the electrical wires and hard-wire them into the unit. Typically, either a bare wire or green wire will attach to the side of the metal housing for grounding, a critical safety measure.
Attach the fan grille to the face of the housing. Turn the circuit breaker back on. Return to the bathroom and test the fan by turning on the switch. Actively scan device characteristics for identification. Use precise geolocation data. Select personalised content. Create a personalised content profile. Measure ad performance. Select basic ads. Create a personalised ads profile.
Select personalised ads. Apply market research to generate audience insights. Measure content performance. Develop and improve products. List of Partners vendors. Note According to many building codes , bathroom exhaust fans are not required. Materials 1 Bathroom exhaust fan 6 foot flexible ducting Screws 1 Round wall vent or roof vent cap Exterior grade silicone caulk.
Before You Begin Two issues often concern homeowners taking on this project: power and venting to the outside. Show Full Article. Your Privacy Rights. To change or withdraw your consent choices for TheSpruce.
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