5 Causes of Frozen AC Coils

Every homeowner’s nightmare during a hot summer day is encountering a frozen AC. Not only does it stop the cool breeze you yearn for, but it can also lead to expensive repairs if not addressed promptly.

But what causes AC coils to freeze in the first place? By understanding the causes of frozen AC coils, you can take preventative measures to ensure your home remains cool all summer long.

Dirty Air Filters

One of the leading causes of frozen AC coils is dirty air filters. When air filters become clogged with dust, pet dander, and other pollutants, it restricts the air flowing through your air conditioning system. This limited airflow can cause the air conditioning coil to drop in temperature. When the coil gets too cold, it can lead to the coils to freeze.

Pro Tip: Schedule routine maintenance and change or clean your air filters monthly to prevent the risk of frozen coils.

Refrigerant Leaks

Refrigerant is the lifeblood of your air conditioning unit. It’s what cools the warm air from your home. Unfortunately, refrigerant leaks can be one of the most common causes of frozen AC coils.

If there’s a refrigerant leak in your system, it can lower the pressure, causing the evaporator coil (the primary air conditioning coil) to freeze over. Refrigerant leaks not only cause your AC unit to underperform, but they are also hazardous to the environment.

Take Action: If you suspect a refrigerant leak, contact an HVAC professional immediately. Repairing leaks early can save you money in the long run.

Dirty Coils

Like dirty air filters, dirty coils can cause similar problems in your HVAC system. Over time, the coils in your air conditioning system can collect dust, grime, and other debris. This build-up can insulate the coils, preventing them from absorbing the warm air. This lack of warm air can ultimately be what causes AC coils to freeze.

Remember: A simple cleaning during your routine maintenance can prevent dirty coils and ensure a smoothly running AC unit.

Malfunctioning Blower Fan

The blower fan in your HVAC system plays a crucial role in keeping the air flowing. It pushes the warm air across the air conditioning coil, ensuring it doesn’t freeze. However, if the blower fan malfunctions, it can’t provide the necessary airflow, leading the coils to freeze.

Stay Alert: If you notice unusual sounds from your AC unit or if the air isn’t cooling as it should, it might be an issue with the blower fan. It’s best to call an HVAC technician to diagnose and fix the problem.

Inadequate Thermostat Settings

Lastly, one common reason that’s often overlooked is the thermostat settings. If your AC is set lower than 69 degrees on days over 95, this can be what causes AC coils to freeze.

Smart Move: Ensure your thermostat is set to a reasonable temperature, and if unsure, consult an HVAC professional.

Schedule Your AC Services Today!

There can be several different causes of frozen AC coils. Are you dealing with this issue or simply wish to avoid it? When it comes down to it, understanding what causes AC coils to freeze is the first step in preventing the issue. From dirty air filters to malfunctioning blower fans, being proactive in your AC’s routine maintenance can save you from the headache of a frozen AC.

If you’re experiencing frozen evaporator coil issues and need professional help, turn off your AC and call Environment Masters. We can provide you with a dependable solution whether you need a comprehensive installation or AC repair in Jackson, MS.

Your AC unit is a vital component of your home, especially during those warm months. By keeping it well-maintained, you ensure that you and your family can enjoy a comfortable and cool living space all summer long. Contact us to schedule your air conditioning service in Jackson or one of the surrounding areas today!

A frozen central air conditioning unit.

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