Why is Your Aircon Noisy?
The sound coming from your aircon could mean something.
Click
It could be a sign of a defective control or a failing thermostat.
Buzzing
– Loose parts or Debris
– Outdoor fan about to fail or fan blades are loose
– Condenser needs to be clean
– Air filter needs to be changed
Clanking
Possibly could mean time for a replacement. This sound can also mean that the indoor blower or outdoor fan and its blades are out of balance and hitting other parts.
Squealing
The squeal noises could be coming through the duct systems coming from the Blower and fan noises. Outdoor fan motors and indoor blower motors squeal loudly when they’re going bad. The blower wheel and housing will also squeal when they malfunction. For some units, this sound is normal upon start-up. Thus, You should be able to identify whether it’s a sound that the unit always makes or if it’s something new.