If your duct requires taking a turn or several, try to lessen the impact by lengthening the turn. Hard turns or multiple turns will all increase the air pressure and the noise that the fan makes. This means you will not achieve the low sone rating that your fan is advertising.Īnother important thing to remember with ductwork is that it should be as straight as possible. The problem is that by doing so, you will increase the air pressure and the noise your fan makes. If your fan is meant to be used with 6” but you have 4” duct currently, you can still hook it up by using a reducer. It could be a major headache and expense to switch to the larger 6” duct. However, you likely have 4” or even 3” duct currently residing in your ceiling. The quietest bathroom fans on the market are usually built for use with 6” ducts. Smaller diameter ducts will create more air pressure, and therefore, more noise. The first thing to understand is that higher air pressure means more noise from the air moving. That being said, there are several ways to minimize the amount of noise that is made from the air moving through the ducts. No matter what you do, moving air will always create some level of noise. When your fan removes the air from your bathroom, it has to then transport it outside of your house through a vent. One of the main sources of noise from your bathroom exhaust fan is the ductwork it hooks into. This could be a sign that your motor is on its last legs. If you see any obvious signs of damage, then it may be time for a replacement.Īfter allowing the fan to run for a while, check for excessive heat buildup. This can make the motor noisy and weak as it reaches the end of its lifespan.Ĭheck the motor for any wear or damage after removing the fan cover. If your fan has only recently started making noise, it’s possible that it could be from the motor going bad. If your fan is older, it may have a louder and less efficient fan motor.Ĭheap fans also tend to use loud motors that spin fast with small fans. It is responsible for turning the fan blades that move the air. Anytime air is moving, it will create some noise, which is unavoidable. The sound of air moving that the fan is pushing also creates noise. Dirt buildup over time can cause the fan to become excessively loud. Make sure to keep the fan blades clean and clear. If your fan is making noise now and it didn’t before, you should check for wear or damage on the fan and motor. If the fan is worn out or damaged at all, it may begin to make more noise as it spins. This will be louder or quieter depending on the quality of components used in constructing it. Through normal operation, they will create some sound as they spin. The fan blades are the moving part of the fan. Then we will discuss 9 different ways to stop bathroom exhaust fan noise. In this article, we will go over the main culprits of the exhaust fan noise that is plaguing your life. Do you remember back when your bathroom fan removed the moisture and smells from the room without making the commotion it does today? If your bathroom fan noise has ever woken up your family members, you need to know how to fix a noisy bathroom fan.Ī loud bathroom fan can be caused by many things.
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