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Residential Heating and Air Conditioning Blog

Why Is My Air Conditioner Freezing Up?

two-air-conditioning-techs-working-on-outdoor-unitYour air conditioner isn’t working properly. You’re not too sure what the source of this issue is, but you know that something has gone awry. You’re not as cool as you should be and it’s really starting to pose a problem as the weather outside is still quite warm.

Then you see it … ice on your air conditioner. What’s wrong? That’s what we are here to tell you! Is the ice on the coils? This is definitely a problem. Read on to learn more! 

Are Your Coils Frozen?

First things first, let’s figure out if your air conditioning coils are actually frozen. Here are a few signs that you might have frozen coils:

  • Warm Air: Yes, your air conditioner works but it doesn’t really perform Your air conditioner is blowing out warm air. It’s as if you don’t even have an air conditioner.
  • Moisture: Have you noticed that the inside of your windows fog up? This is a sign that you have an excess of moisture in your home due to frozen coils.
  • Ice: Go take a look at your air conditioner. Do you see any ice? If you do, this could easily be a sign of frozen coils.

If one or more of these symptoms above apply to your home, then you might have frozen AC coils.

All the Common Causes Why AC Coils Freeze

Now, let’s take it back a little—why did your air conditioner coils freeze in the first place? There are a few contributing factors that might have caused this:

Dirty Air Filters/A Lack of Airflow

Having a dirty air filter in your home is one of the fastest ways to get your air conditioning coils to freeze over. This is because your air filter does a lot of heavy lifting. It keeps your air conditioning system clean so that it can perform to the best of its ability. Dirty air filters lead to a lack of airflow which can cause an imbalance in your system. This can lead to frozen coils in your air conditioner.

Refrigerant Leaks

If your refrigerant leaks, then it’s likely that you’ll have frozen air conditioning coils. The cooling process requires a certain level of refrigerant and, when it doesn’t get this certain amount, it’s easy for your coils to freeze over.

Your Next Steps

The biggest rule that we think you should abide by when it comes to HVAC is this: if you notice something, say something!

If you’ve connected the dots and realized that it’s highly likely that you have frozen air conditioning coils, then you should schedule an appointment with us. We can handle your air conditioning needs flawlessly and get your air conditioner back on track.

Contact Residential Heating and Air Conditioning for professional AC repair in St. Paul, MN.

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