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Furnace Blower Motor Troubleshooting: Why is it making noise?


Furnace Blower Motor Troubleshooting
Furnace Blower Motor Troubleshooting

Why is the blower motor making noise?

If you hear a clicking noise from your furnace blower motor, it could be due to a few different issues. The most common cause is a loose or damaged belt. If the belt is loose, it can slip and cause the furnace blower motor clicking noise. If the belt is damaged, it can also make noise as it tries to turn the motor. Another possible cause of furnace blower motor noise is a problem with the bearings. The bearings help to keep the motor running smoothly, and if they become worn out, they can start to make noise. Sometimes, the fix for noisy furnace blower motors is simply lubricating the bearings. However, if the bearings are excessively worn, they will need to be replaced.

What does a bad furnace blower motor sound like?

A bad furnace blower motor can make much noise. It may squeal, grind, or rattle. You may hear a humming sound that gets louder and higher-pitched as the motor speeds up. Or, you may hear clicking as the motor tries to start. If the blower motor goes bad, it will eventually fail, and the furnace will not be able to circulate heat. If you notice any of these symptoms, it’s time to call a furnace repair technician. Ignoring the problem will not make it go away, and it will only get worse (and more expensive) as time goes on.

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How do you know if your blower motor is going out?

There are a few signs that your blower motor may be going out. If you notice that your fan is not running as smoothly as it used to, or if it’s making strange noises, that could be a sign that the motor is starting to fail. Another telltale sign is if your fan starts blowing hot air instead of cold air – this usually happens because the motor is overworking and getting too hot. If you notice any of these signs, it is best to call a technician to take a look. They can diagnose the problem and let you know if you need to replace the motor.

How do you fix a noisy furnace blower?

A noisy furnace blower can be annoying and indicate that something is wrong with your furnace. There are a few things you can do to fix a loud furnace blower. First, check to see if the blower is balanced correctly. If it is unbalanced, this can cause the blower to vibrate and make noise. You can fix this by adjusting the belt or pulley. Second, check to see if the blower wheel is hitting anything as it turns. If something is blocking the wheel, this can also cause noise. Third, make sure that the blower housing is not loose. If it is, tighten the screws or bolts that hold it in place. Finally, if your furnace blower is still making noise after you have tried these things, you may need to replace it.


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