AC Unit Freezing Up? Here’s Why and What to Do

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If you’ve noticed your AC unit freezing up, you’re not alone. At ALCO HVAC Plumbing & Gas, we often get calls from Fredericksburg homeowners dealing with this issue. While it may seem odd to see ice on an AC unit during hot weather, it’s actually a common problem that needs prompt attention.

Why Is Your AC Unit Freezing Up?

There are a few reasons why your AC unit is freezing up. Let’s take a closer look at the most common culprits.

Restricted Airflow

One of the most common reasons for an air conditioning unit freezing up is restricted airflow. When the air can’t move through the system as it should, it causes the evaporator coil to get too cold. This can happen if your air filter is clogged or dirty, or if your vents are blocked.

Low Refrigerant Levels

If your AC system is low on refrigerant, it can lead to an air conditioning unit freezing up. Low refrigerant means the system can’t absorb heat properly, causing the coils to freeze. You might also notice reduced cooling performance or a hissing sound from your unit.

Dirty Evaporator Coils

Dirt and debris on the evaporator coils can also cause an AC unit freezing up. When dirt builds up, it acts as an insulator, preventing the coils from properly absorbing heat. Regular maintenance with ALCO HVAC Plumbing & Gas can help keep your coils clean and functioning correctly.

How to Fix Your AC Unit Freezing Up

If you’re dealing with an air conditioning unit freezing up, here are some steps you can take to resolve the issue before calling a professional.

Check Your Air Filter

Start by checking your air filter. A dirty or clogged filter restricts airflow, leading to freezing. Replace the filter if it’s dirty, and see if that helps. At ALCO HVAC Plumbing & Gas, we recommend changing filters every one to three months.

Inspect the Vents

Blocked vents can also be the cause of your AC unit freezing up. Make sure nothing is obstructing airflow, like furniture or curtains. Clearing the vents can restore proper circulation and help thaw the coils.

When to Call ALCO HVAC Plumbing & Gas

Sometimes, fixing an air conditioning unit freezing up requires professional help. If your AC continues to freeze despite your efforts, it could indicate a deeper issue, like a refrigerant leak or a faulty blower fan. Our team in Fredericksburg is ready to diagnose and fix the problem quickly.

Don’t Let a Freezing AC Unit Ruin Your Comfort

Dealing with an air conditioning unit freezing up can be frustrating, especially during hot weather. At ALCO HVAC Plumbing & Gas, we’re committed to keeping your home comfortable year-round. Whether it’s airflow issues or refrigerant problems, our experts are here to help. Give us a call today and let’s get your AC running smoothly again. We service Fredericksburg, Prince William County, and the surrounding areas.