Air conditioner rattle, simple fix.

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  1. #1

    Join Date
    Aug 2006
    Posts
    11,884

    Air conditioner rattle, simple fix.

    A tip that might work for noisy air conditioners:

    I have a couple of wall mounted AC units that were making rattling noises, where the plastic panels were vibrating from the motor action.

    Some Dynamat (acoustic mass damper in an adhesive sheet, available from auto shops) applied to the inside of the panel stopped the noise. Here's a photo. I went a bit overboard on the Dynamat as it was just sitting around unused.

    Note that this goes on the inside of the front panel, so it's not a huge unsightly mess when the AC is viewed normally.

    Obviously, this is not going to work for noisy ACs where the noise is from the motor.


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    Last edited by jgl; 18-04-2018 at 09:34 AM.

  2. #2

    Join Date
    Nov 2008
    Posts
    4,574

    One of my AC's was rattling a couple of years ago.. the reason? the outer shell had completely rusted off and there were chunks of metal caught on the rotor blade.. the machine was only a couple of years old - I guess the salty air from the fragrant harbour was to blame