Nothing’s worse than an AC that quits on you when it’s scorching outside. Not only is it uncomfortable, but extreme heat can also be dangerous.
A frozen coil is a common reason for the sudden stop, but you don’t have to suffer. Here, our team will walk you through the causes, solutions, and preventive measures to keep frozen HVAC coils at bay.
What’s the Problem?
So, you’re probably curious about how you even ended up in this icy predicament! Here are some reasons why it happens:
- Dirty air filters restrict airflow, causing the coil temperature to drop and eventually freeze.
- Low refrigerant levels lead to lower pressure in the system, resulting in coil freezing.
- Blocked or dirty evaporator coils prevent efficient heat exchange, encouraging freezing.
- Malfunctioning blower fans or motors reduce airflow, leading to a drop in coil temperature.
- Poor insulation or ductwork issues can contribute to uneven airflow and freezing.
Steps to Unfreeze Your AC Coil
Let’s get your AC back to blowing cool!
First, turn off the HVAC Unit. (A key step –safety first.) You’ll want to switch off your air conditioning unit to prevent further damage. Letting it run with frozen coils can stress the system and lead to a more costly repair job.
From there, it’s best to let the AC unit rest for about 24 hours for the frozen coil to thaw naturally if the weather is warm. This downtime will let your system return to its efficient performance.
Next, it’s time to turn on the AC Fan by setting the thermostat to fan-only mode. This circulates warm air over the coils, aiding in their thawing. Be patient, as this step can take several hours.
Let’s do a couple of quick, but important checks! Ensure that nothing is blocking the vents as restricted airflow can lead to coil icing. Clear away any furniture or items blocking the path of airflow. Now is also the time to inspect your air filter and confirm the thermostat settings. Verify that your thermostat is set to an appropriate temperature. Avoid setting it too low, as this may encourage your coils to freeze again.
Lastly, let the air conditioner coils fully dry before turning the AC back on. Turning it on while wet can lead to ice reformation and potential damage to the unit.
By following these steps, you can unfreeze your AC coils and prevent this problem from recurring. And of course, regular maintenance and care are essential to keep your system running smoothly. Remember, our HVAC repair pros are just a quick call away if you need a hand! Seriously – if the problem persists, contact a professional technician to examine and fix any underlying issues.
Common Mistakes to Avoid When Unfreezing Your AC
- Skipping the Shut-off
- Attempting to Speed Up the Thaw
- Ignoring Consistent Freezing Issues
- Restarting Too Soon
Chill with ACHV Services
If your AC coils keep freezing after you’ve thawed them, this is a red flag for deeper issues. Regular freezing can be symptomatic of airflow problems or refrigerant leaks.
Still having trouble with a frozen AC coil? Don’t worry, we’ve got you covered! ACHV is here to get your AC back in action. Call/text us anytime for reliable service to keep your home comfortable all year long.
Reach out today and let us handle the rest!
Hillsborough > 813-917-2982
Pinellas > 727-453-2432


