Amana air conditioner makes loud rattling, buzzing, or grinding noises during operation.

Safety first: Turn off and unplug the unit before inspecting moving parts. Do not insert fingers near fans while powered.

Steps to reduce noise:

• Check for debris: Remove the front cover and inspect the blower and fan areas for leaves, plastic, or other foreign objects. Remove any obstructions.
• Tighten hardware: Tighten screws securing the blower housing, fan shroud, and chassis to reduce vibration.
• Inspect fan blades: Check that the condenser fan blade and indoor blower wheel are tight on their shafts and not rubbing against housings. Tighten set screws or replace damaged blades.
• Evaluate motor bearings: If noise is a high-pitched squeal or grinding that changes with speed, the motor bearings may be worn. Replace the noisy fan or blower motor.

Running the unit with severe mechanical noise can lead to further damage; address the cause promptly.