Learning About Commercial Air Conditioning Units

5 Unusual Noises Your Residential AC Repair Service Should Investigate

19 September 2022

Floyd Carroll

What happens when your AC unit starts making strange noises? Should you be worried? The answer is yes! If your AC unit starts making unusual noises, it's important to have a professional investigate the issue as soon as possible. While some noises are nothing to worry about, others can indicate a serious problem that needs to be addressed by a residential AC repair service right away. Here are a few unusual noises your AC unit may be making and what they could mean.

1. Rattling 

Rattling noises usually mean that there is something loose inside your AC unit. This could be anything from a loose screw to a stone caught in the fan blades. While a rattling noise may not seem like a big deal, it's always best to have it checked out by a professional, just to be safe. Identifying loose components and tightening the screws can easily fix this problem. 

2. Cracking 

Cracking noises usually mean that one of the components inside your AC unit has become worn out or damaged and needs to be replaced. While this isn't necessarily an emergency, it's still something you'll need to take care of as soon as possible so your AC unit can continue running smoothly. 

3. Hissing 

Hissing noises often indicate a refrigerant leak somewhere in your AC unit. Refrigerant is essential for your AC unit to function properly; even a small leak can cause big problems. 

If you hear hissing from your AC unit, call a professional immediately so they can find and repair the leak before the AC comes to a complete halt. If the refrigerant levels have dropped, the residential AC repair service will refill it to the right level after sealing the leak.

4. Squealing 

Squealing noises are often caused by loose belts or failing bearings inside your AC unit. A loose or frayed blower belt can cause a high-pitched squealing noise while failing bearings usually make a lower-pitched squealing noise. 

This problem can often be fixed by simply tightening the belt if it is loose or replacing it if it is too frayed. You can't repair bearings, only replace them.

5. Banging 

Banging noises from your AC unit often indicate that something is caught in the fan blades or that the fan blades themselves are damaged or unbalanced. Either way, it's important to have this looked at by an AC technician right away since misshaped blades can damage the housing. 

If your AC unit starts making any unusual noise, don't hesitate to have it investigated since it could signify a deeper problem. The sooner you get the noise diagnosed and repaired, the better off your unit will be. Call a residential AC repair service and save yourself the discomfort and high repair bills.

For more information, reach out to a local service, such as Big Rock Service Company LLC.

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