The one most important room that we human must need to use is the bathroom, I am pretty sure while going through this article some people might feel weird or creepy by thinking that “is it even possible to have an article like this?” Let me tell you something, it’s more than important because I bet none of you would want your bathroom to stink with a bad odor whenever you step in only because your Bathroom Exhaust Fan is broken and you could not fix it. So go through this write up properly to save yourself from being a victim to odor pollution at your own facility.

How to replace bathroom exhaust fan

Diagnosing The Problem with Your Old  Bathroom Exhaust Fan

  1. The unit makes a loud clanking sound. It indicates either malfunctioning bearings or misaligned fan blades. Unfortunately, bearings cannot be lubricated or replaced since they often seal within the unit. Malfunctioning bearings eventually cause the fan to stop working altogether.
  2. The fan takes too long to power up. This may indicate that the fan will stop working sooner rather than later.
  3. The fan fails to power up at all even though the switch works just fine. This likely indicates malfunctioning circuitry within the fan. The unit needs to replace.


How to Replace a Bathroom Exhaust Fan

  1. Check if a permit is necessary to perform this type of action: From our point of view we might think it’s not that important to have any permit, but there are some rules which might tie us. There might need some sort of assistance from experts. But hopefully working on one’s own property doesn’t need any permit.
  1. Know what type of Fan you have been using: It’s important to know about your previous fan type or else you might buy the wrong one and it will be an extra hassle for you for nothing. Properly recheck the wiring and plugs. Then go and buy your preferable fan.
  1. Find your New Exhaust Fan: Go to your nearest home supply store and find the perfect model and fan of your own choice. Try to buy the one with Low “Sone” Number (less than 2) and High CFM (Cubic Feet Per Minute) Number.

Sone’s Determine how much sound the fan will make, so selecting the lowest some number will save you from noisy bathroom experience.

The CFM determines how much air the fan will take out from your bathroom, so select the high CFM added fan. The bigger the bathroom the more CFM the Fan should have.

  1. Assemble your Tools: You will need some important tools to replace your fan. The list is pinned below –
  • Screwdriver
  • Circuit Tester (to test voltage)
  • Wire Connectors
  • Drop Cloth
  • Drill & Bits
  • Drywall Knife
  • HVAC Tape
  1. Lay Down the Drop Cloth: Removing your old fan and adjusting the new one will create a glacier of ordure and wreckage to rain underneath. So use the Dropcloth and carefully open the old fan and put it on the cloth to save yourself from extra cleaning work.
  1. Turn off The Bathroom Fan: Find your Main Circuit point and shut down the Bathroom Exhaust Fan or Bathroom ware switch. You never would want to work while the electricity is on.
  1. Remove the Old fan accordingly: First, remove the fans Cover carefully. Quickly disconnect all the wirings. Then open the fan by slowly removing the screws. Hold the fan with one hand while unscrewing the fan because it could fall and will cause havoc of debris in the bathroom. After dissevering the vent pipe, it’ll amplify and drive from the vent in entire roof with fan housing, which turns into estrange the vent pipe from the used old fan’s housing. It may be attached with housing by HVAC tape, just peel it away. It also may be attached by screws so use your screwdriver to unscrew it.
  1. Remove The Fan Housing: Sometimes its attached in the middle of the fan, carefully remove it by using screwdriver.
  1. Adjust The Ceiling Hole if It’s Required: If you got a new modeled fan with bigger size then adjust the ceiling with the drywall knife. If your celling cannot be resized (solid), then careful while buying the fan, buy the exactly sized fan.
  1. Adjust your new Fan: While adjusting a new fan into the ceiling, you must concern about to drive screws with the help of brackets, in order to attach with the different fan’s casing of house into ceiling framing. You should carefully read and check the instructions, which you got along with your fan equipment and be sure that your adjusting strategy and approach are right and similar to the given instructions. There’ll be some fans which will permit you to operate the fastener screws from the ground into the roof of ceiling joists, and there’ll also be some other fan which may require to link brackets inside your garret.
  1. Connect the electrical wires to the fan housing: Moreover, the time when you connect e-wire, you just need to unscrew the joint of the box cover at the part of the fan casing of house, which leads to back out the three wires later. Then you must link the wires in fan casing of house which regards to the corresponding colored wires and it’ll attach in your ceiling or garret that drive into the used fan housing. Lastly, you must require to locate the wires at the same place and put to use the flexible, workable and elastic adapter to link them accurately.
  • Please be concern, to make sure that you have linked the right colored of specific wires. For example, You are seeing three different colors of wires white, black and yellow, in that case, you must join the yellow colored wire with another yellow colored wire. Stay away from creating any complexity by joining white color wire with black colored wire or yellow colored wire with white colored wire.
  • Don’t forget to jog the specific colored wire connections in astern within the casing, and do the continuous check to change all the joint of box cover when you’re connecting the wires.
  • In rare cases, if your fan holds the system of standard plug, instead of holding the surroundings by insulator wires and cable, then you must ensure to seal it into the vent in your garret.
  1. Fan cover snapping: When your model’s cover is gripped by flexible, workable and elastic tabs, then you must need to drive it into place from beneath until that run clicks into exact area. On the other hand, the cover is held in place through screws in case, you must assure that you conduct to drive it on point from the beneath along with a screwdriver or drill while snapping.

Wrap it Up

So, You learn how you can replace your old or broken bathroom fan with a brand new model. You do not have to be an HVAC expert to replace a bathroom exhaust fan. Now it is your time to do it yourself and save money.




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Mohiuddin Shawon

Mohiuddin Shawon is the Chief Editor and Content Researcher of He is also the chief editor of The Blazing Home . Mohiuddin Shawon is a professional Electrical Engineer. He is the main pillar of Top Cooling Fan. His engineering skill and research help us to find the top quality fan for the general public.