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LG Air Conditioner - Regular A/C Maintenance

  • Repair

At a Glance

Noise while cooling is normal, however, if there is dust, a foreign substance, or obstacles in the way of the air conditioner airflow, these obstructions may cause the air conditioner to make loud abnormal noises during operation.

Try This

  1. Clean the Air Conditioner’s Ultra-Fine Filter and Coils

    If the filter or coils are covered with dust and debris, cooling performance may be degraded, and may cause noise and condensation.

    Note

    For information on cleaning the filter, please see our LG Air Conditioner - Regular A/C Maintenance article for further assistance.

    image showing how to remove the casing to reach the ulta fine filter

  2. Adjust the Fan Speed

    Wind sound and noise from operating product may be heard louder if the product capacity is large, or the product is installed in a restricted space.

    image showing the fan speed being changed

  3. Adjust the Air Flow Vents

    If you use a product without ventilation lever, open the vents fully to prevent restricted airflow causing whistling or squeaking noises.

    Note

    The up/down and left/right automatic control function varies by model, so refer to the user manual.

    image showing how to close or open vent slots

  4. Check the Install

    Severe vibration or rattling sounds are usually the result of improper installation. If the air conditioner wasn’t installed securely in the window according the directions in the owner’s manual, then the case could rattle or make a loud vibrating noise.

    image showing the iron angle assembling


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