Your air conditioner can develop problems, such as strange noises coming from the system. These noises usually indicate that your AC needs some sort of repair. Here are some AC noises you should pay attention to that indicate your AC needs repair in your Lincolnshire, IL home.

Grinding Noise

A grinding noise from your AC indicates a problem with the motor bearings or the fan blades. Over time, these parts can wear down, causing the grinding noise. It’s important to turn off your AC immediately if you hear this noise; then, call a professional to inspect the unit.

Hissing Noise

Your air conditioner hissing could show a refrigerant leak. Your air conditioner uses a substance called refrigerant to cool the air. If there’s a leak, inhaling the refrigerant is detrimental to your health.

Buzzing Noise

A damaged or loose component, such as a fan or compressor, can be the source of an air conditioning buzzing noise. It can also be an indication of an electrical issue. It’s crucial to call a professional to identify and resolve the problem.

Rattling Noise


A rattling noise from your AC can indicate loose parts or debris in the unit. It can also indicate a problem with the compressor. Regularly maintaining your system will help you prevent such a problem.

Another potential cause of a rattling noise is a problem with the compressor. The compressor compresses the refrigerant and circulates it through the system to cool the air. If the compressor is malfunctioning, it can create a rattling noise.

Squealing Noise

A squealing noise from your AC usually shows a problem with the fan belt or motor. Over time, the fan belt can become worn or loose, which causes it to slip on the pulleys that drive the fan. This slippage can create a high-pitched squealing noise.

If you hear any of these noises from your AC, it’s important to address the issue immediately. Contact us at Martin Enterprises today to repair your AC system.

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