Why Is My AC Freezing Up?

It can be pretty stressful to come home on a hot day and find your air conditioning unit frozen over. There are a few common reasons why this occurs. Here are some some of the issues you can watch for that may lead to freezing over.

AC Airflow Problem

The condenser coil in your AC unit needs proper airflow or else it can freeze over. The most common reason airflow becomes restricted or blocked is because the air filter is dirty. Manufacturers recommend changing the air filter anywhere between every one to every six months depending on the filter type, size and materials used. However, at GVEC Home we recommend checking your air filter monthly and replacing or cleaning at least every 3 months.

Air Conditioner Refrigerant Leak

A leak in your refrigerant lines can lead to reduced pressure. This results in the refrigerant not being able to absorb heat, which leads to the condenser coil freezing over. You will need to contact a professional HVAC technician like those at GVEC Home to solve this problem.

If you have an AC system made before 2010 and it’s leaking, you will likely need to replace the entire system because it probably uses an expensive refrigerant that is being phased out in 2020 to combat its negative environmental impact.

Obstructed AC Condensate Line

Your AC unit includes a condensate line that drains moisture buildup. If the line gets clogged, it can cause the condenser coil to freeze. A condensate line most often becomes clogged because of a buildup of mold and mildew inside it, which can present a whole other set of issues related to the safety of your AC system

Thermostat Problem

A malfunctioning thermostat can also cause issues in regard to AC freezing. This can happen if the thermostat fails to properly control AC run cycles, which could lead to the system operating continuously for too long. This, in turn, could cause freezing in the condenser coil. Replacing or servicing the thermostat will solve this problem.

GVEC Home for all Your HVAC Needs

GVEC Home offers a range of AC/heating products and services throughout South Central Texas, including in Gonzales, Seguin, Schertz, Cuero, New Braunfels, La Vernia and more. We can help solve all your cooling and heating issues. We offer 24/7 emergency HVAC repair, maintenance plans and more. We can help you with repairing or replacing your air conditioning system, too. For more information, to schedule an appointment or for emergency service, call us at 877.466.5506.

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