Using a motor lubricant or spray lubricant on the motor shaft can temporarily relieve the noise. This, however, is not a permanent fix and the problem should be tended to by an AC repair professional as soon as possible.Feb 1, 2019
Why does my AC make a high-pitched noise?
In most cases, a high-pitched whistling sound means that your air conditioner isn't getting enough airflow through the return vents and ductwork: the ones that pull air from your home to the air conditioning evaporator coils to cool it. Your air conditioner has to work harder to pull enough air through the system.Aug 11, 2020
Why is my car squealing when I turn on the AC?
A loud squeal is produced when the A/C is turned on. This symptom is usually caused by a loose or worn air conditioning compressor belt. ... This places a load on the engine and the drive belt that rotates the compressor. If the belt is loose or worn the belt can slip on the compressor pulley and emit a loud squeal.
Why is my AC making a screeching noise?
Hissing or Screeching If your air conditioning unit is emitting a high-pitched screeching or hissing sound, the most likely cause is high pressure built up in your compressor. If this is the case, the sound will most likely be heard outside at the unit when the AC first kicks on and will last about 10-15 seconds.Jul 22, 2019
Why does my car squeal when the air conditioner is on?
A loud squeal is produced when the A/C is turned on. This symptom is usually caused by a loose or worn air conditioning compressor belt. ... This places a load on the engine and the drive belt that rotates the compressor. If the belt is loose or worn the belt can slip on the compressor pulley and emit a loud squeal.