My AC Freezes

Why Does My Air Conditioner Freeze?
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Why Does My Air Conditioner Freeze?

When it comes to your air conditioning unit, many people believe cooler is better. However, the sight of ice on your AC is never a good sign. Without timely air conditioner maintenance, your unit won’t be able to cool properly and may eventually break down due to stress caused on the internal components. If you’re experiencing ice build up on your unit, keep reading to learn about what causes air conditioners to freeze and what to do when it does.

What Causes Air Conditioner Coils to Freeze?

In order to avoid costly air conditioner repairs, it’s important to understand the various situations that cause air conditioners to freeze. By identifying and fixing problems early, you can avoid the headaches of dealing with an AC unit that stops working when you need it most. The following are some of the most common factors contributing to an air conditioner freeze up:

When the amount of Freon flowing through your air conditioner system dips because of a leak, it causes increased expansion and colder temperatures that result in the presence of ice.

A malfunction of a critical component, weakness or leak can throw off the pressure in your entire system, causing freeze up.

Occasionally, a blockage occurs in an air conditioner unit, restricting the appropriate flow over the evaporator chords. This prevents the AC from effectively filtering warm air out of the room, resulting in moisture build up and eventually ice.

Running too cold

When a unit is left running when the outdoor temperature drops too low, it can eventually affect the internal pressure of the system and result in a frozen unit.

Avoiding a Freeze Up With Regularly Scheduled Air Conditioner Maintenance

Proper maintenance can often prevent air conditioner coils from freezing. From changing air filters to scheduling an annual tune up, getting your unit serviced will take care of most contributing factors before they ever manifest themselves. If you have a frozen central air conditioner, turn off your unit right away and leave it unplugged until it’s completely defrosted. The faster you take action, the more likely you are to avoid extensive damage.

For additional information on what causes air conditioner coils to freeze and assistance in diagnosing a frozen central air conditioner, contact the team at N.S. Johnson, Inc. We’re a local HVAC contractor providing expert, affordable air conditioner maintenance and air conditioner repair services in Hershey, Lebanon, Hummelstown, Palmyra and areas beyond.