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  • Writer's pictureJesse Gonzalez

Why is my AC making loud noises?

Your AC unit is designed to run silently, so any unusual noises coming from the system are likely a sign of an issue. Some of the most common noises that indicate trouble include grinding, squealing, clicking, and buzzing.


Grinding usually indicates a worn out motor or fan blade bearing. This can cause significant damage to your AC if left unattended for too long.


Squealing is often caused by loose parts that need to be tightened or lubricated. It could also indicate other issues with belts or pulleys.


Clicking may mean that your AC’s compressor is struggling due to low refrigerant levels or even electrical problems like loose wiring connections.


Buzzing tends to come from dirt and debris that has built up in your AC’s fan blades or grilles. It can also be caused by a loose fan blade that needs to be tightened.


Regardless of the noise, any issue with your air conditioner should be addressed as soon as possible by a qualified technician to prevent expensive repairs down the line. The technician will diagnose and repair the underlying problem so you can keep your home cool and comfortable all summer long.

If you think your AC is making loud noises, it’s best to have a professional take a look. Proper maintenance and repairs can help ensure your unit runs quietly and efficiently for years to come.


The best way to prevent your AC from making loud noises is to keep up with routine maintenance. This should include regular filter changes, coil cleaning, and inspections of the various components. With regular maintenance, you can catch small problems before they become big issues and extend the lifespan of your unit. Investing in preventative care now will save you money down the line!


If you’re hearing unexplained noises coming from your air conditioner, don’t wait to find out what’s causing it. Contact a professional HVAC technician right away. At Rancho Heating & Air Plumbing we are trained licensed professionals who serve Rancho Santa Margarita & surrounding cities. Please feel free to give us a call to schedule your visit.

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