Fixing a noisy ceiling fan involves diagnosing whether the sound is caused by loose hardware, electrical vibration, or unlubricated bearings. First, ensure safety by cutting power at the circuit breaker. Second, tighten all loose mounting screws on the ceiling canopy, blade brackets, and blade irons to stop rattling. Third, if the fan has an oil port, add a few drops of non-detergent SAE 20 electric motor oil. If the motor buzzes from dimmer incompatibility, upgrade your switch. You can troubleshoot acoustic noise safely. You can verify that your corrective action is successful when restoring power and running the fan across multiple speed settings confirms that all buzzing, rattling, and squeaking have been completely eliminated, restoring quiet operation.
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