There are several ways to determine if your air conditioning system is faulty. While most systems will produce a low humming sound, unusual noises are usually a sign of a failing air conditioner. To avoid premature equipment failure, learn about three AC sounds you shouldn’t ignore in Hobe Sound, FL.


A rattling noise is a sign of loose components in your air conditioning system. You should also check for debris within the outdoor unit. If you ignore the problem, the obstruction can cause severe damage to your equipment.

Another possible cause of rattling is a worn-out motor. The motor may need lubrication, and depending on its condition, it may need replacing. You can avoid such issues by scheduling preventive AC maintenance.

Hissing and Gurgling

If you hear gurgling or hissing sounds near your indoor air handler, it could be due to a refrigerant leak. The issue might be with the refrigerant lines or the AC system’s internal valve. Either way, the problem will worsen if you don’t address it immediately.

The leaking will gradually reduce the refrigerant levels in your air conditioning system. A low charge will compromise your AC system’s ability to control temperatures. You’ll need to recharge the refrigerant to regulate humidity during the muggy summers.

High-Pitched Squealing

A high-pitched squealing sound usually points to a defective motor’s fan belt. It’s more common in older air conditioners since newer models don’t come with a fan belt.

If your AC system is a recent model, the squealing sound could be from worn-out fan motor bearings within its drive system. You’ll need to replace the motor to restore the performance of your air conditioner.

Any unusual AC sounds not present before usually indicate that your air conditioner is deteriorating fast. Prompt AC service will prevent further damage to your equipment. Call North County Cooling Inc. today for dependable AC repairs in Hobe Sound.

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