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Why Is My PRISM+ Air Conditioner Noisy?

PRISM+ Support teamUpdated 27 August 2026~3 min remaining3 steps

A low level of vibration or operating noise from the indoor Air Conditioner unit or the outdoor compressor is normal during operation.

However, if the noise is excessive, unusually loud, or different from the usual operating sound, there may be an issue that requires attention.

What Can Cause Excessive Noise?

Some possible causes include:

Possible CauseWhat May Happen
Dirty fan coil or condenserDust and debris can contribute to vibration or operating noise.
Loose componentsAircon components that are not securely installed may cause additional vibration or noise.
Defective componentsA faulty Aircon component may result in unusual or excessive noise.

 

Before arranging for further assistance, you may perform some basic cleaning and maintenance by following the steps below:

Steps

  1. 1
    1 min

    Remove the indoor fan coil unit filter and wash it to remove accumulated dust and dirt.

  2. 2
    1 min

    Use a vacuum cleaner to remove dust and debris from the Aircon fins.

  3. 3
    1 min

    Use a rag or towel to absorb any water in the water tray.

    Note: Basic cleaning may help reduce noise caused by accumulated dust or debris. If the Air Conditioner continues to produce excessive or unusual noise after cleaning, the issue may be related to loose or defective components and may require further assistance.

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