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Furnace is Loud

The 3 most common part(s) or condition(s) which contribute to the symptom Furnace is loud are listed below. Check or test each item and watch any available videos. If you are still unable to solve the problem you may need to do additional research and troubleshooting. Remember, with our 365 Days. Period.® return policy you can return any part for any reason. So, go ahead and buy it to try it. No other parts retailer offers this unconditional return policy.


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For the symptom you selected, these are the most common parts or causes, ordered by the likelihood of fixing the symptom.

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Blower Wheel

If the furnace is loud the blower wheel on the fan motor that blows air through the house might be bad. The blower wheel is attached to the blower motor shaft with a set screw. Make sure the set screw had not come loose causing the blower wheel to slip on the motor shaft. Check the wheel itself for damage like a separated center hub or broken fins. If damaged replace.

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Blower Motor

If the furnace is loud the blower motor might be bad. The motor has bearings built into it that can fail and get loud during motor operation. Some motors will have oil ports for turbine oil but in most cases when the motor is loud from worn bearings the motor will need to be replaced.

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Draft Inducer Motor

If the furnace is loud the draft inducer motor might be bad. The motor has bearings built into it that can fail and get loud during motor operation. When the draft inducer motor is loud from worn bearings the motor will need to be replaced.

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