HVAC & PLUMBING BLOG

What is Causing My AC Unit to Make Noise?

Your air conditioning unit keeps you from sweating in the heat and suffering through the long summer months. Without it, you’ll likely find yourself standing in front of the open refrigerator or trying to hop the fence to your neighbor’s pool just to get comfortable.

When your AC unit is on the fritz though, you may not quite know how to diagnose it. One of the most common complaints homeowners have is a noisy AC unit. While excessive AC noise can be caused by a variety of factors, there are some that are more likely than others.
Use this guide to help you figure out why your air conditioning unit is so noisy and how you can get it running correctly again.

Clogged Air Filter

The air filter in your air conditioning unit helps to make sure you breathe clean air that’s free of debris, pet dander and other little bits and particles you don’t really want floating into your lungs. Air that isn’t perfectly clean isn’t always the only problem when you’ve got a clogged, oil air filter though.

An air filter that needs to be replaced can tax your entire AC system, making it work harder just to push air through your vents. That can result in an unpleasant noise that’s particularly noticeable around your home.
Clogged air filters can also damage your AC system over time if they overheat, making you ask yourself, “how come my air conditioner won’t work?” Always schedule regular air filter changes and keep an extra filter on hand. That way you won’t be running to the hardware store only to find what you need isn’t in stock.

Loose Parts

When your air conditioner starts to get old, one of the most common problems is simple deterioration. AC units might look like sturdy, but they take more abuse than you might think.
As parts shake or become loose, you may hear a buzzing, humming or rattling noise somewhere in your system. Sometimes parts can be fixed, but this noise is often a sign that your AC unit needs a more serious repair to perform at a peak level.

Excess Debris

In the summer months when you first turn on your AC unit, chances are you haven’t paid too much attention to it during the cooler months. You’ve been running the heat or enjoying the spring weather that didn’t require much heating or cooling at all.

Now that you’re running the AC though, all of that not paying attention to your unit can be problematic. That’s because debris like leaves, dirt and even animal droppings can mess up your AC system and how it functions.
Take time to visually inspect your AC system inside and out. Your compressor coils are also a major area of concern, so make sure those aren’t covered with debris that could make your AC a bit louder than normal.

Schedule Service

If your AC unit is noisy and you just can’t figure out why, you’re definitely not alone. Most people can’t diagnose complicated machinery and fix the problems by themselves. Instead of driving yourself crazy, call a qualified technician to come and service your AC unit.
You should have your air conditioning tuned up at the beginning of each spring anyway. That way your AC will be efficient and cool your home like it should all summer long.

ACE Home Services is Here to Help with All AC Noises & Issues

Contact ACE Home Services to learn more about maintaining your air conditioning unit and making sure it’s running efficiently. For all of the problems you can’t handle, including your AC, heating and plumbing needs, ACE Home Service looks forward to serving you.

1 thought on “What is Causing My AC Unit to Make Noise?”

  1. Thanks for helping me identify why AC units are making weird noises. I had no idea that having loose internal parts could be a reason why it’s creating a weird rattling and humming noise upon usage. My friend told me that his AC unit is making these noises, and it’s starting to get him worried. I’ll suggest that he consult an expert who can handle AC issues before it gets worse.

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