How to Solve the Abnormal Noise from Car Air Conditioner Blower?

1 Answers
McBriella
07/29/25 5:47pm
If the abnormal noise changes with the air volume, it is likely that there is a foreign object inside the blower. Removing the foreign object should resolve the issue. If the noise is caused by air resonance in the duct, turn off the air conditioner compressor, turn on the blower, and adjust the air volume and direction. If the noise is caused by a foreign object in the air duct or a motor malfunction, open the engine compartment to check which part is resonating, then proceed with disassembly and repair.
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