Why is my Indoor unit noisy?

There are a few possibility of the causes,

  1. Misalignment of fan motor, causing loud noise
    • Require general servicing to clean up indoor unit and grease motor
  2. Producing “hu hu hu” sound, this is cause by dirty coil that is choke.
    • Require chemical wash to purge out all dust and dirt in between the coils
  3. Crackling Sound cause by possibility of Expansion and Contraction of cooling coil
    •  Sound usually goes away after 15 mins of operation
  4. The blower sound at high fan speed is loud and affecting my sleep
    • Set to lowest fan mode to enjoy a quieter peaceful sleep.