How to Replace Bathroom Fan in Easy Way

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how to Replace Bathroom Fan

From dampness elimination to smell control, bathroom fans do a number of important features that enhance the quality of the air in your home. Modern devices come in a range of designs, some of which do not even resemble fans, as well as they run silently as well as efficiently to wear down moisture and also warm, maintaining your residence comfy.

Replace Bathroom Fan

House owners with some woodworking and electrical experience could approach this as a DIY task, if you’ve never functioned with electric tools prior to, you ought to work with an expert to make certain every little thing is mounted appropriately.

Sorts of Bath Fans to think about

To choose the appropriate model for your bathroom, take into consideration the size of the space, the air vent approach as well as any bonus offer functions. Bathroom fans commonly come in three sizes based on the square video they could deal with.

Types of Bath Fans

– Small bathroom fans could ventilate up to 70 square feet, making them excellent for usage in a tiny bathroom
– Medium bathroom fans function well for rooms between 70 and also 100 square feet
– Large bathroom fans can aerate more than 100 square feet of space

Dimension isn’t really the only factor to consider. Bathroom exhaust fans also can be found in three installing designs, including ceiling places, ceiling/wall placed, and also wall placed. While some designs are smooth as well as simple with a practical style, others have an incorporated decorative light that looks extra like a flushmount ceiling light compared to a fan.

Step by Step Guide to Replacing a Fan

Typical Amount of Time to Complete: Less than eventually


Mounting a new bathroom fan does need some woodworking and also electric skills. Check with your regional state or region government to identify if you need a permit to finish the essential electric work involved in this task. You need hand devices, a cordless drill and also a jigsaw to saw via the drywall if necessary. You additionally require protective eyeglasses and also a drop cloth to protect the flooring from square one and also particles.

Required Tools as well as Materials

– Stepladder.
– New duct fan.
– Wire connectors.
– Roof concrete.
– Roof cap.
– Mounting braces.
– Wire connectors.
– 4-inch versatile insulated air duct.
– 4-inch aluminum ducts, both straight as well as elbow joint.
– 6-inch flexible clamps.
– 3/8-inch self-tapping sheet steel screws.
– 1/2-inch self-tapping sheet metal screws.
– 4-in-1 screwdriver.
– Cordless drill/driver.
– Drywall saw.
– Pry bar.
– Jigsaw.
– Hammer.
– Non-contact voltage tester.
– Utility blade.
– Chalk line.
– Dust mask.
– Goggles.
– Flashlight.
– Gloves.
– Dropcloth.

Tip One: Turn Off the Power.

Turn Off the Power

Whenever you function on electrical systems, you require to transform the power to the area off at the circuit breaker. Remove the cover from the old bathroom fan and also test it with the voltage tester to make certain there’s no power present running through it.

Step Two: Remove the Old Fan Motor.

Disconnect the motor and also remove it from the fan’s housing. Locate the electrical links, which are typically in a small box. Utilize the voltage tester to make sure there’s no electric existing before detaching the cords.

Step Three: Remove the Old Fan Housing.

Remove the Old Fan

Take your cordless drill, energy knife, clips, wire cutter and also pole dancer, screwdriver and a work light right into the attic. Find the fan real estate and also start pushing insulation away from it as required. Unscrew any type of screws securing the housing to a joist utilizing the power drill, and remove the old real estate.

Idea: If you see dull gray electrical wiring as opposed to boring orange cables, call a licensed specialist that is certified in dealing with aluminum electrical wiring.

Step Four: Prepare the Area.

Unless the housing of the brand-new fan coincides size as the old one, you’re going to should do a little basic carpentry. Trace the overview of the new real estate over the old one making use of the chalk line. Use the saw to increase the size of the opening in preparation for the setup.

Location the base of the brand-new fan’s housing on the ceiling as well as trace the outline. Cut the opening to enlarge it, or spot the ceiling with drywall if the brand-new fan is smaller than the old one. Take both pieces back right into the attic room, along with placing braces, the aluminum joint, sheet steel screws, electrical wire staples, air duct clamps, electric clamps, caulk as well as the new fan.

Step Five: Install the Fan.

Move the placing braces on the fan and extend them to reach the joists. Line the fan up with the new opening that you cut and ease it down through the hole. Ideally, you ought to have a helper on hand who can hold the real estate comfortably to the ceiling while you secure it. Maintain the real estate degree and also drive screws with the installing holes to the joists.

Tip Six: Run the Ducts.

Replace the ducts by connecting an aluminum elbow to the fan’s exhaust port. Then, attach the duct lining to the elbow. Run the air duct straight to the roof covering opening without stretching it as well snugly or enabling it to kink. Utilize the fewest turns feasible. Cut the air duct to the right size and connect it to both light weight aluminum finishes.

Tip Seven: Connect the Wires.

Full the circuitry, from over in the attic room or from below in the bathroom, depending on just how the fan is established. Secure the electrical cable television to the fan’s housing, leaving about 6 inches of wire in package. Use a wire stripper to strip 5/8-inch of the insulation off the end of each cable.

Connect the cables and staple the cable television to a mounting participant no farther than 12 inches far from the wire clamp. If you’re unfamiliar with electrical job, it could be best to call a licensed electrician to complete this action. Furthermore, if you determine to do it on your own, call a local electrical inspector to earn certain you’ve completed the job correctly.

Step Eight: Seal the Perimeter.

Usage adaptable caulk to seal the location around the edge of the fan. This assists maintain points quieter along with protecting against air leakage with any spaces. Replace the insulation as well as cover the brand-new fan’s real estate. Collect all the devices you brought up with you before you head pull back to the bathroom.

Tip Nine: Complete the Roof Work.

Stand at the hole in the roof and bring up on the tilted end of the straight air duct to leave 3/4-inch above the surface of the roof covering. Screw that section to your roofing’s sheathing utilizing 1/2-inch sheet metal screws before caulking the area between the roof shingles as well as the duct to secure it.

Head out on the roofing system and replace the old vent cap with a brand-new air vent cap, being careful not to damage your roof shingles with the fragile old roof cap. Utilize a saw making the previous opening large enough to fit the new 4-inch duct before getting to via to draw the air duct up and via the roof. Keep the angled end of the duct roughly 3/4-inch over the surface area of the roofing.

Secure the air duct to the sheathing with screws as well as caulk around the edges to avoid condensation from triggering any type of dampness damage. Install the brand-new vent cap after inspecting to make sure the damper and also screen remain in location.

Step Ten: Finish the Job.

Return to the bathroom to mount the brand-new fan’s decorative grille. Turn the power back on at the circuit breaker, and after that transform the fan on to make certain it’s functioning correctly.

Sizing Considerations.

To choose the most efficient and effective fan for your room, avoid obtaining one that’s too huge or small. Begin by taking into consideration the size of your bathroom. When you’re checking out dimension, you really wish to measure the air movement capacity, which is shared in cubic feet each min (cfm).

The basic policy as identified by the Home Ventilating Institute suggests that a bathroom fan should have 1 cfm for each square foot of area on the bathroom floor. As an example, if your bathroom is 9 feet by 10 feet, you have 90 square feet of location and you ought to have a fan with a minimum of 90 cfm.

For bathrooms with greater than 100 square feet of location, change the size by including 50 cfm for each and every bathroom, shower and mix. Add 100 cfm for every whirlpool and 50 cfm for each and every toilet. If you’re experiencing moisture issues regardless of having a bathroom fan, you might should update to a version with a larger cfm score.

Additionally, fans gauge the amount of sound they make in sones. Select one with a lower sone ranking for peaceful procedure– those ranked at 1.0 sones or less are the quietest.

Replacing vs. Cleaning a Fan.

Does your existing bathroom fan seem to be doing not have performance? Prior to you upgrade to a new or bigger version, attempt giving it an excellent cleaning. Indicators that a cleansing is needed consist of:.

– Accumulated particles on the ornamental grille.
– Sudden decline in efficient air circulation.
– Loud operation.

Bathroom fans must be cleaned two times annual to eliminate dust, crud and also irritants that accumulate on the exterior of the grille and the inside of the real estate. To clean a bathroom fan, transform the power off at the circuit breaker as well as eliminate the cover from the ceiling.

Replace the Fan.

If you’ve cleaned up the fan and it still isn’t really functioning well, then it’s time to check out an upgrade or a substitute. Other signs that factor toward replacement consist of:

– Loud operation: Bathroom fans included a variety of sound degrees, with some operating at whisper-quiet levels. Search for models with the most affordable sone rating. If your present fan gets significantly louder even after cleaning, the motor could be wearing out.
– Cracked outside: With age, several of the aesthetic elements certainly begin falling short. If you start discovering troubles on the outside, the in is most likely aging, too.
– Dated look as well as functioning: Increased power performance as well as a wider series of eye-catching styles make changing that old fan a wise alternative.

Various other Considerations.

Bathroom fans are necessary to the total health and wellness and also well-being of your house. Efficiently getting rid of moisture from the air helps in reducing the likelihood of creating mold and mildew as well as mold in your home. Making certain you’re obtaining one of the most from your new fan, think about a few of the adhering to important points.

Replacing Ductwork.

Occasionally check the ductwork for signs of damage, twists in the duct, clogs or connections that have actually loosened up. Any type of troubles with the ductwork can avoid the fan from running appropriately or allow moisture to leave into the attic. If you’re replacing an existing fixture, it makes good sense to replace the ductwork also.

Many modern fans are compatible with 4-inch ductwork. Affix it to the fan’s port and also run the ductwork to an opening in the roofing system. See to it you keep the ductwork as straight as possible without having it drew tight to raise performance.

Proper Ventilation.

It might appear tempting to permit the air from the bathroom to just duct into your attic room, however doing so is a recipe for calamity. Allowing the damp air to build up in your attic room puts the space at risk for developing mold and mildew and mildew. Building codes require that bath fans be ducted outside, ideally through the roof, although airing vent through a wall surface could work, also.

Repairing the Wall/Ceiling.

If your brand-new fan is sized in different ways from the old one, or if damages happens throughout the replacement procedure, hang or patch drywall in the location to repair big holes. If the damages is substantial, hire a specialist making sure it’s repaired seamlessly.

In addition, if your old fan had not been working efficiently, mold and mildew and mold could have damaged your wall surfaces and also ceiling. Look after little, musty locations in three actions:.

1. Eliminate any type of damaged caulking.
2. Tidy the wall surfaces and ceiling with a mold-killing cleanser such as hydrogen peroxide or bleach. Don’t mix both products.
3. Open the window and doors and run the new bathroom fan in order to help dry the area.

Large problems might call for removing wall surfaces. If the afflicted location is larger compared to 10 square feet, or if the mold and mildew are creeping into the wall surface, consult a local mold removal as well as removal company.

Mounting a new bathroom fan does require some carpentry as well as electrical skills. Return to the bathroom to set up the new fan’s ornamental grille. The general regulation as identified by the Home Ventilating Institute suggests that a bathroom fan ought to have 1 cfm for every square foot of space on the bathroom floor.

Bathroom fans ought to be cleaned up twice yearly to get rid of dirt, crud and also irritants that gather on the outside of the grille and the within of the housing. – Loud procedure: Bathroom fans come with a range of noise degrees, with some operating at whisper-quiet degrees.