how to make blower fan quieter: Tips and Tricks

We were a crew of DIY buffs who knew the pain of a noisy blower fan. It was a nuisance, hindering our sweet slumber and messing with our concentration at work. The loud noise from the blower fan made us agitated, so we resolved to handle it ourselves.

We embarked on a mission to figure out “how to make blower fan quieter”. With a blend of trials, errors, research, and guidance from experts, we managed to diminish the blower fan’s noise level.

We will relay our personal experience and the exact steps we took to make our blower fan quieter in this article. Follow these tips to enjoy a more tranquil and cozy environment.

Determining the Cause of the Noise

When we got a loud blower fan, we figured we had to know why it was noisy. We needed to find out to fix it and hush it down. We’ll show you how we figured out what was causing the racket.

Identifying the Type of Fan

To find what’s making noise, first, we must know our fans. Two kinds exist: centrifugal and axial. Centrifugal fans are big with bent blades, and axial fans are small with straight blades. Knowing the fan type helps to limit the noise suspects.

Checking for Loose Components

We heard our blower fan make a racket, which can happen if stuff is loose. So we killed the power and took a look-see. We found some loose bits on the motor mount, blower wheel, and pulleys. We got our trusty wrench and screwdriver and tightened them up. We also checked for any damage because that can make noise too.

Inspecting the Blades and Housing

Sometimes, a noisy blower fan can happen because of dirt or harm to the blades or shelter. To fix it, we check the blades and shelter for any harm or dirt. If there’s dirt, we can gently clean it with a brush or cloth. If there’s harm, we may have to swap the blades or shelter. We can get new parts from a nearby shop or online.

If we know why the fan is loud, we can do something about it to make it quieter. Afterwards, I will share some answers to tone down the blower fan noise.

how to make blower fan quieter

how to make blower fan quieter


We’ve noticed that when the blower fan gets noisy, it’s usually because it’s dry. The bearings inside the fan motor can get all parched, making a ruckus. So, we suggest oiling up those bearings regularly.

This is important because if you don’t, things will start to rub and wear down too much. That can make the motor overheat and break down too soon. Also, it’ll stop all that noise and shaking.

Now, there are a few oils you could use for this. We did suggest getting a good one that’s non-detergent. SAE 20 or 30 motor oil is a good pick. Or you could try silicone-based lube or lithium grease.

Cleaning the Fan Blades

We had a noisy blower fan. It bothered us a lot. We learned that the reason was dirty blades. Dust and dirt made the blades unbalanced and loud. We found a solution – cleaning the fan blades.

It’s important to keep the fan blades clean to ensure good airflow and reduce noise. Clean blades move air more efficiently, reducing motor strain and noise.

To clean the fan blades, first, turn off the power. Remove the fan cover and use a soft brush or compressed air to gently clean the blades. Be careful not to bend or damage them. Then put the fan cover back and turn the power back on.

Installing Anti-Vibration Pads

We run a blower fan and it made a lot of noise due to vibrations. But we found a fix by using anti-vibration pads made of rubber or other materials. These pads absorbed the vibrations and stopped them from spreading to the surface where the fan was placed. We could easily install the pads, and it significantly reduced the noise from the blower fan.

How to Install Anti-Vibration Pads

We put in anti-vibration pads easily with a few steps:

  1. Turn off the blower fan’s power before we start.
  2. Take out the blower fan from where it’s mounted.
  3. Clean the mount to remove any dirt or junk.
  4. Put the anti-vibration pads on the mount where we will install the fan. We position the pads to touch the fan when we put it back.
  5. Put the fan back on the pads and secure it in place.
  6. Turn the power on again and check if the fan runs without any noise.

We want to remember that not all pads are the same. Some might not support the weight or size of our fan. It’s essential to pick the right pads. We should also follow the manufacturer’s instructions to install the pads correctly and reduce noise.

Soundproofing the Fan

We know some things to do to soundproof a blower fan:

  • Make a soundproof box: Put the fan in a box made of wood, metal, or plastic to reduce the noise. But make sure to keep it ventilated so the fan won’t get too hot.
  • Add sound-absorbing stuff: Stick some foam, fibreglass, or acoustic panels on the fan housing. These can absorb sound waves and reduce noise.
  • Check for loose things: Loose screws, bolts, or other parts can make the fan shake and produce more noise. Make sure they are tight.
  • Clean the fan: Dirt and rubbish can build up on the fan blades and make more noise. Clean it regularly to keep it debris-free.
  • Get a quieter fan: If nothing works, change the fan to a quieter one. Find a fan with a lower noise rating measured in sones to reduce noise.

Doing These Things Can Help Make A Blower Fan Quieter. But Remember, It Might Not Work The First Time, And You Might Have To Try Other Ways To Soundproof It.

Replacing the Fan

We have tried every fix, but our blower fan still clatters like a machine gun. We might need to change it soon. We should keep these things in mind:

If the fan is old and has seen many winters, it might be worn out and no longer top-notch. If it’s damaged or busted, it’ll make a racket and require a new one. And if it’s not meant to go with our furnace, it could cause a ruckus and work inefficiently.

When picking a new fan, seek out one that’s made to be quiet. We checked how loud it would be by looking at its decibel rating. A sone is a measure of noise, and the lower the rating, the quieter it is. Look for features like insulated housings or rubber mounts that reduce noise levels.

Make sure that the fan you choose is compatible with your furnace. Look at the specs and size to be certain it’ll work well. If you’re unsure, seek help from a pro to help pick out the right fan for your furnace.

also read: how to make furnace quieter


We tried everything to silence our blower fan, but nothing worked universally. We found out that the way to handle noise is to pinpoint its root and mend it.

We learned that by regularly cleaning and oiling the fan, it could be quieter. Additionally, utilizing noise-absorbing materials or enclosing the fan in a box could aid in reducing the noise.

If all else fails, acquiring a less noisy fan may be the solution. We had to research and locate a device that could handle our needs and satisfy our demands.

Ultimately, achieving a quieter blower fan requires patience, experimenting with various methods, and being receptive to attempting new things until discovering the most effective approach for your situation.

About Author

this is john Andrew from Australia, I am an architect I have worked for the home improvement company Bunnings. I am a home improvement specialist as well as a part-time blogger. Where I will keep giving you tips on soundproofing, you follow our blog.

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