A noisy air conditioner is very annoying. There can be several reasons behind a noisy air conditioner. The noise from your AC is a clear indication that something is wrong inside the unit that needs repair. Ignoring the noise from the AC may worsen the problem to a point where it cannot be fixed or where fixing it will be an expensive affair.
Reasons behind a noisy air conditioner:
Worn out compressor
Air conditioner compressor is almost always noisy. If the compressor is making an unusual noise or is noisier than it used to be, it might be worn out or wearing out. So if the compressor is more noisy than usual, it’s time you call a PRO and get it repaired.
There is one fan at the front end and one fan at the rear end in an air conditioner. For a fan to work properly, it needs to be kept clean and regularly maintained. If the humming or rattling noise from the AC seems to be coming from the fan area, then the fan blades need to be checked. Remove any debris you see on or around the blades. In some cases insulation or other items may fall into the unit and produce noise due to the movement of the blades. If the problem is not debris or dust, then check to see if the blades itself are loose. If so, then blades need to be tightened. Sometimes the fan blades bend slightly and touch the adjacent component of the unit which produces noise.
Faulty fan motors or driver motor
If the air conditioner is noisy the fan motor, also called a dual shaft fan motor, might have gone bad. The fan motor has bearings which needs to be permanently lubricated. Over several years of operation the lubrication may break down making the motor loud and noisy. The fan motor is usually not repairable and will need to be replaced if it is noisy.
Defective motor belt or bearing
Sometimes your hear a screeching sound from your AC. This noise indicates a bad belt or motor bearing problems. Belts are not normally an expensive repair. Defective motor belt is a common reason behind a noisy air conditioner.
Book a case for AC making noise with Hill Country Repairs and spare yourself from the horror of a screaming AC.
For more information on AC care and maintenance, check out our website.