4 AC Noises And What They Mean

An AC provides indoor comfort when the outdoor temperatures are soaring. But the system can develop malfunctions due to continuous use. For instance, you may hear loud, unusual noises from your cooling unit. If you neglect this issue, it may escalate and cause a system failure. Thus, you should engage an AC technician for a unit inspection when the noise becomes annoying and disruptive. They will assess the system and repair the malfunction to ensure optimal performance. Below are AC noises and what they mean. 

Clicking Noise 

It is normal for your AC to make a click or a pop sound when communicating with the thermostat. However, the thermostat could be defective if the clicking sound becomes too loud. This issue can result from dirt accumulating in the thermostat, impeding temperature detection. As a result, your system will short-cycle, making it hard for your home to reach the desired temperature. Then, you will hear clicking noises when your AC starts and shuts down. If not addressed in time, this problem causes untimely wear and tear of the components. To avert such issues, hire a repair expert to fix your faulty thermostat immediately.

Hissing Noise

The refrigerant facilitates heat transfer by absorbing heat in the evaporator coil and dissipating it via the condenser. However, coolant lines can deteriorate from formic acid corrosion, causing the refrigerant to leak. In addition, copper lines can become loose due to constant vibrations, leaking the coolant. Consequently, the refrigerant will escape through holes, resulting in hissing noises. Call an AC expert to patch and seal the coolant lines so as to prevent toxic leakages.

Squealing Noise

A high-pitched squealing noise from your AC indicates a malfunctioning compressor. Clogged filters impede airflow, causing high internal pressure. Moreover, debris accumulation on the condenser can hinder the compressor from venting, increasing pressure. As temperatures increase, this increased pressure results in a squealing noise in the compressor compartment. Besides that, low lubrication levels can cause the motor bearings to grind against each other. As a result, you will hear a squealing noise as the motor attempts to spin the rotor.

Rattling Noise

The fan compartment could be faulty if you notice a rattling noise from your AC. This sound is due to constant vibrations from the condenser, making the fan and screws loose. Furthermore, plant matter and debris can infiltrate the fan and motor, restricting its operation. Usually, loose parts and a dirty fan produce rattling noises. 

A noisy AC will disrupt your indoor ambiance. Therefore, contact an AC repair contractor to service your unit when the noises become unbearable.

Contact air conditioning repair services to learn more.