How to Fix a Squeaky Furnace Blower Motor

A squeaky furnace blower motor can be annoying and might make you think there’s something wrong with your furnace. Fortunately, in most cases, a little lubrication is all that’s needed to fix the problem. In this blog post, we’ll show you how to fix a squeaky furnace blower motor with a few easy steps.

How to Fix a Squeaky Furnace Blower Motor

Summary: If you’re having trouble with your furnace blower motor making a lot of noise, there are a few things you can do to try and fix the issue. First, make sure you check the belt tensioning system to make sure it’s tight. If the belt is loose, the motor will spin faster and make more noise. Additionally, you can try lubricating the bearings in the motor with a light oil or grease. Finally, if all else fails, you can have a technician check out the motor.

What Is a Squeaky Furnace Blower Motor?

A squeaky furnace blower motor can signal that your furnace needs repair. The blower motor is responsible for circulating air throughout your home and can develop issues over time. If you notice that your furnace is making a squeaking noise, it’s important to have it checked out by a professional. There are a few different potential causes of a squeaky blower motor, and a qualified technician will be able to identify the problem and make the necessary repairs.

In some cases, the issue can be resolved with a simple lubrication treatment. However, if the problem is more serious, such as a damaged bearing, it may be necessary to replace the entire motor. Regardless of the cause, it’s important to have a squeaky furnace blower motor fixed as soon as possible to ensure that your furnace is running efficiently and safely.

Why Should You Fix a Squeaky Furnace Blower Motor?

Most people have had the experience of a squeaky door hinge or a creaky floorboard. These sounds are annoying, but they usually do not cause concern. However, when it comes to your furnace, a squeaky blower motor is not something that should be ignored. A furnace blower motor helps to circulate warm air throughout your home, and if it is not functioning properly, your home may not be warmed evenly.

Additionally, a squeaky blower motor can indicate that the bearings are beginning to wear out. If left unchecked, this can lead to the motor seizing up completely, leaving you without heat in the middle of winter. While it may be tempting to ignore the problem in hopes that it will go away on its own, it is always best to have a professional examine your furnace and address any issues as soon as possible.

7 Steps to Follow on How to Fix a Squeaky Furnace Blower Motor

Step 1: Locate the Source of The Noise

The first step is to identify where the noise is coming from. For example, is it coming from the blower motor itself? Or is it coming from another component in the furnace? If you can’t tell, try putting your ear next to each component in the furnace and listening for the noise. Once you’ve located the noise source, you can move on to the next step.

Identify Where the Noise is Coming From

Step 2: Check for Loose Parts

Once you’ve located the noise source, the next step is to check for any loose parts. This is especially important if the noise comes from the blower motor itself. If there are any loose parts, tighten them up with a wrench. If you can’t find the noise source, move on to the next step.

Step 3: Lubricate The Blower Motor

If the noise comes from the blower motor, it’s likely due to a lack of lubrication. To fix this, simply add some lubricant to the blower motor. You can find lubricant at most hardware stores.

Step 4: Replace The Blower Motor

If the noise persists after lubricating the blower motor, it’s likely that the motor itself is damaged and will need to be replaced. Fortunately, blower motors are relatively inexpensive and easy to find. You can purchase one at most hardware stores or online.

Step 5: Check The Fan Belt

If the noise is coming from another component in the furnace, it’s likely due to a loose fan belt. To fix this, simply tighten the fan belt with a wrench. However, if the noise persists, you may need to replace the fan belt.

Step 6: Inspect The Air Filter

Another potential cause of furnace noise is a dirty air filter. A dirty air filter can restrict airflow and cause the blower motor to work harder, leading to noise. To fix this, simply replace the air filter with a new one.

Step 7: Call A Professional

If you’ve followed all of the steps above and the noise persists, it’s time to call a professional. A qualified HVAC technician will be able to diagnose and fix the problem quickly and efficiently.

That’s it! You’ve now learned how to fix a squeaky furnace blower motor. If you have any questions or need help, feel free to call a professional.

Diagnose and Fix the Problem

Why Does My Furnace Make Noise?

A furnace is a mechanical device that uses heat to circulate warm air throughout a home or office. Although furnaces are designed to operate quietly, they can sometimes make strange noises. One common cause of furnace noise is loose parts. Over time, screws and bolts can work themselves loose, causing the furnace to vibrate and produce a rattling noise.

Another possible cause of furnace noise is an obstruction in the exhaust pipe. If the pipe becomes blocked, the furnace may make a gurgling sound as it tries to force air through the obstruction. If your furnace starts making unusual noises, it’s important to have it inspected by a qualified technician to ensure that it is safe and operating efficiently.

5 Easy Ways to Stop Your Furnace from Squeaking

A squeaking furnace can be annoying, but it can also signify a bigger problem. If your furnace is squeaking, here are a few easy ways to stop the noise.

First, check the blower wheel. If the wheel is loose, tighten the set screw or bolts that hold it in place. If the wheel is damaged or worn out, it will need to be replaced.

Next, take a look at the blower motor itself. If the bearings are worn out, they will need to be replaced. However, if the motor is simply dirty, you can clean it with a brush or compressed air.

Another possible cause of squeaking is a loose belt. If the belt that powers the blower wheel is loose, tighten it or replace it altogether.

Finally, make sure that all of the panels on your furnace are securely fastened. Loose panels can vibrate and cause unwanted noise.

By following these simple tips, you can quiet a squeaky furnace and keep it running smoothly for years to come. Keep reading for more information about how to fix a squeaky furnace blower motor.

How to Inspect and Lubricate a Furnace Blower Motor

One of the most important maintenance tasks for a furnace is regularly inspecting and lubricating the blower motor. The blower motor is responsible for circulating air around the heat exchanger and can quickly become overloaded if it is not properly maintained. Although there are many ways to lubricate a blower motor, the most important thing is ensuring that the right amount of lubricant is used.

Lubricating the Blower Motor

Too much lubricant can cause the motor to overheat, while too little can lead to premature wear. The best way to determine the right amount of lubricant is to consult the owner’s manual for your furnace. Once you have determined the proper amount of lubricant, simply apply it to the blower motor using a brush or cloth.

Be sure to work the lubricant into all of the nooks and crannies, and then allow it to dry completely before turning on the furnace. Following these simple steps can help ensure that your furnace always runs smoothly.

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What Are Some Common Causes of Squeaky Furnace Blower Motors?

One of the most common causes of a squeaky furnace is a dirty or clogged blower motor. Over time, the blades of the blower motor can become covered in dust and dirt, which can cause them to move more slowly and produce a squeaking sound. In addition, the lubrication on the motor can break down, causing the blades to rub against each other and create a squealing noise.

If your blower motor is beginning to squeak, it’s important to have it cleaned or serviced as soon as possible to prevent further damage. Other common causes of squeaky furnaces include loose fan belts, worn-out bearings, and damaged pulleys. If you’re unsure what’s causing your furnace to squeak, it’s best to call a professional for help.

How to Replace a Furnace Blower Motor

Replacing a furnace blower motor is a relatively easy repair that can be completed in a few hours. The most important thing to remember when replacing a furnace blower motor is to turn off the power to the furnace before beginning any work. Once the power is off, the first step is to remove the access panel from the furnace. With the access panel removed, you will be able to see the blower motor. The next step is to disconnect the wiring harness from the blower motor.

Once the wiring harness is disconnected, you can remove the screws that hold the blower motor in place and pull it out of the furnace. To install the new blower motor, simply reverse these steps. Be sure to reconnect the wiring harness before turning on the power to the furnace. With these simple steps, you can easily replace a furnace blower motor.

Remove the Screws That Hold the Blower Motor

Frequently Asked Questions

Can I Lubricate the Furnace Blower Motor?

Unfortunately, there is no specific lubricant that can be used to lubricate the furnace blower motor. However, many people believe that using a petroleum-based lubricant may help to reduce friction and improve performance. If you choose not to use a lubricant, make sure to slow down your blower speed as much as possible when starting it up in order to minimize wear and tear.

Can I Use Wd40 on My Furnace Motor?

While WD40 can be used on certain appliances, it’s not recommended for use on furnaces. This is because the oil-based lubricant could damage the motor and cause a fire. In addition, using WD40 will also make it difficult to clean the furnace.

Why Is the Blower Motor Making Noise?

It sounds like your blower motor may be going out of commission. Here are a few things to check:

  1. Make sure the belt is not stretched or broken – If the belt is stretched or broken, it will not be able to turn the fan and will cause noise. Check to see if the belt is properly installed by removing the screws that hold it in place and looking for tears or other signs of damage.
  2. Check for clogged or obstructed vents – If you are hearing excessive noise coming from the fan, it may be because there is something blocking the vents. Check to see if there are any obstructions such as leaves, twigs, etc., and try to remove them if possible.
  3. Clean the motor housing – If you notice any build-up of dust, lint, or other debris on the motor housing, it may be causing problems and should be cleaned ASAP. Use a vacuum cleaner with a crevice tool attachment and make sure to clean around all the screws and connections.
  4. Replace the blower motor if necessary – If all of these checks fail to resolve the issue, it may be time to replace the blower motor. Consult an expert for help in determining which type of blower motor may be appropriate for your specific vehicle.

What Does a Bad Furnace Blower Motor Sound like?

A bad furnace blower motor can cause a variety of problems, the most common of which is an inability to cool your home. This can lead to high temperatures and condensation on windows, ceilings, and walls. In extreme cases, this moisture can promote mold growth and other health concerns.

The noise that accompanies a bad furnace blower motor also warns you about potential safety hazards. The screeching sound may be an indication of broken belts or gears, while the whooshing sound may signal overheating bearings or blades. If you’re experiencing any of these symptoms, it’s important to call a professional as soon as possible in order to prevent further damage.


A squeaky furnace blower motor can be annoying, but it’s usually an easy fix. Just follow the steps above and you should have your furnace running quietly in no time! Thanks for reading our post about how to fix a squeaky furnace blower motor.

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