Why Are My AC Coils Frozen?

Do you notice that your AC does not seem to be running properly? You are sweating sitting in your home and don’t know how to fix it. Believe it or not, your AC coils may be frozen, even if it’s the middle of the summer! That’s right, your AC coils can freeze any time of year! So, what causes this to happen, and more importantly, how can you fix it? Read through this guide to better understand your air conditioner, and how you can fix frozen AC coils.

How Do My AC Coils Freeze?

The two main causes of frozen AC coils are clogged air filters/lack of air flow, and refrigerant leaks. First, clogged or dirty air ducts can cause your air conditioning system to run improperly. The disrupted air flow doesn’t allow your system to keep coils warm, allowing moisture in the system to settle on the coils and freeze. As for refrigerant leaks, this issue can cause frozen coils in several different ways. For one, a refrigerant leak may cause the pressure in your system to drop, telling the refrigerant to expand and freeze. Another way is through the refrigerant itself which can accumulate in the AC unit and freeze if not properly drained.

You may be wondering what you can do if you find yourself in a situation where your AC coils are frozen. Luckily, we have the answers!

What Are The Signs?

First, how do you know if your AC coils are frozen? Don’t worry, there are a few signs that indicate frozen coils you can rely on. If your AC runs but you aren’t feeling any cooler or any cold air coming out at all, if ice is visible anywhere on the unit, or if you notice more moisture than normal around your system, these could all be signs that you have frozen coils. Be sure to check your system with the steps below or contact an HVAC professional.

How to Fix Frozen AC Coils

There are a few DIY options to unfreeze your AC that you can try before you call a trained professional. First, you can turn on the fan in your AC and turn off whatever thermostat setting was on. This can potentially unfreeze your coils by pushing warmer air over them. This process will take a few hours.

Second, if your system includes a heat pump, turning on defrost mode could do the trick. If you do not have a heat pump, be sure to check your AC unit’s owner’s manual, there may be instructions included for unfreezing coils.

If you are still having issues after going through these DIY steps, it is probably best to call in an HVAC professional. Luckily, here at Same Day Plumbing, Heating, Cooling, we have trained professionals that are happy to help. We offer AC replacements, tune ups, and repairs, visit us today!

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