Has your AC decided to take an unscheduled ice bath? Don’t sweat it—a frozen AC is a common issue, especially during those hot summer months when you rely on it most. But what do you do when your AC unit freezes up inside? From the why to the how-to-fix, this guide will walk you through everything you need to know to get your AC running smoothly again.
1. Identify the Culprit
The first thing to do when your AC unit freezes up inside is to identify the cause of the problem. If you can pinpoint the source, you’ll have a better understanding of how to fix it and prevent it from happening again in the future. Some common causes of a frozen AC include:
- Insufficient Airflow: If your AC isn’t getting enough air, it can cause the evaporator coils to freeze. This is often due to clogged air filters or blocked vents.
- Low Refrigerant Levels: Refrigerant cools the air inside your AC. If there isn’t enough of it, it can cause ice to build up on the coils.
- Faulty Blower Fan: The blower fan is responsible for circulating the air inside your AC. If it’s not working properly, it can lead to freezing.
- Clogged Drain Pan: The drain pan is designed to collect condensation from the AC unit. If it’s clogged, the excess moisture can cause ice to form on the coils.
- Thermostat Issues: A malfunctioning thermostat can cause your AC to run longer than necessary, leading to frozen coils.
2. Turn the System Off
Once you’ve identified the culprit, turn off your AC system to prevent further damage. If you continue to run the AC while it’s frozen, it can cause the compressor to overheat, which can lead to even more issues.
3. Check Your Filters
The next thing to do when your AC unit freezes up inside is to check your air filters. If they’re dirty or blocked, it can restrict airflow and cause the coils to freeze. Replace or clean your filters according to the manufacturer’s instructions and clear away debris blocking the vents.
4. Allow the AC to Thaw
After turning off the system and checking the filters, let your AC unit thaw out. This can take a few hours or even overnight, depending on how much ice has built up. Do not try to speed up the process by using heat sources like hairdryers or heaters—this can damage the unit. You’ll need to wait for the ice to melt naturally.
5. Call In a Professional
Are you still struggling to figure out what to do when your AC unit freezes up inside? It’s time to call in a professional. A certified HVAC technician will have the expertise and tools needed to diagnose and fix the issue, ensuring your AC is running efficiently again.
If this is a common occurrence that has you wondering why your AC keeps freezing up, a professional can also perform a thorough inspection to determine the root cause of the problem. It may be as simple as needing a tune-up or replacing worn parts.
What Can You Do When Your AC Unit Freezes Up Inside? Call Triad Mechanical
Don’t let a frozen AC unit ruin your day—Triad Mechanical is here to help. Our team of experienced HVAC technicians is dedicated to providing top-quality service and keeping your home comfortable year-round. Contact us today to schedule an appointment or learn more about our services.