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Comfy Heating & Air Conditioning Inc. Blog

Why Does My Air Conditioner Freeze Up?

Given that the main function of your air conditioner is to send cool air through your home, improving your indoor comfort during the spring and summer, it’s natural to assume that a little bit of icing on the unit is normal.

However, on the contrary, a frozen air conditioner can signal a big problem. If you notice ice on your equipment, first turn your system off so it can defrost. Before turning it back on though, it’s important to understand what could have caused this to happen, and get it repaired by a professional if necessary.

Air Flow Is Blocked

If your home’s air flow is obstructed, then there is no air moving through the air conditioner in order to keep the condensate on the coil from freezing. The culprit is most likely a dirty air filter. Air filters protect the delicate inside components of your air conditioning system.

Therefore to prevent further HVAC damage it’s vital that you change the filter out at least every three months. Another way to make sure that your system is getting proper care and inspection is by scheduling regular HVAC tune-ups.

Refrigerant Leak

Another common reason for a frozen air conditioner is a refrigerant leak. Many homeowners assume that it’s normal for refrigerant levels to drop over the years. However, your air conditioner is charged with enough refrigerant upon installation to last its entire life cycle, ideally.

If you suspect that you have a refrigerant leak—you may notice lukewarm air coming from the cooling system—then you should contact a professional HVAC contractor right away. Let a licensed technician find the problem and repair it before it becomes a larger, more costly issue.

If you’ve checked for the above signs, and still notice that your air conditioner is freezing up a few days later, then the best thing you can do is call for professional diagnostics. In the meantime, be sure to turn your system off to avoid damage.

For expert air conditioning repairs in Fremont, CA, contact Comfy Heating & Air Conditioning today.

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