High-Pitched Chatter

Today’s high efficiency compressors may have a high-pitched chatter during the cooling cycle.

Sound of Rushing Air

At the front of the unit, you may hear the sound of rushing air being moved by the fan.

Gurgle/Hiss

Gurgling or hissing noises may be heard due to refrigerant passing through the evaporator during normal operation.

Vibration

Unit may vibrate and make noise because of poor wall or window construction or incorrect installation.

Pinging or Swishing

Droplets of water hitting condenser during normal operation may cause pinging or swishing sounds.