Picture this — it’s a sweltering summer day, and instead of the cool blast of air you expected, your AC is barely working… and worse, it’s freezing up. At Quality Comfort Air Conditioning and Heating Inc., we understand how frustrating this is, especially in Florida. If you spot ice anywhere on your system, shut it off immediately. Continuing to run it could damage the compressor and result in total system failure.
Let’s walk through the most common causes of a frozen AC unit and what you can do about it, plus when it’s time to call in the pros.
Clogged air filters restrict airflow, causing the evaporator coil to drop below freezing. The result? A block of ice where cool air should be.
✅ Fix: Clean or replace filters every 30–90 days, depending on usage. Dirty home? Pets? Check monthly.
Low refrigerant means low pressure, and low pressure causes the coil to freeze. This is usually due to a leak.
⚠️ Warning: Don’t just top off refrigerant — that’s a temporary bandage.
✅ Fix: Call our team at Quality Comfort. We'll locate and fix the leak before adding new refrigerant.
Blocked or closed vents stop air from circulating properly, letting cold air build up around the coil.
✅ Fix: Make sure all supply and return vents are open and unobstructed.
Shut your AC off completely and turn the fan to ON to help thaw the coil faster.
Make this your first go-to fix. Dirty filters are behind most airflow problems.
Make sure every vent is open and no furniture or curtains are blocking airflow.
If the lines are iced up or you see oily residue, you’ve likely got a leak. Don’t DIY this one — it’s a job for the pros.
Some things are best left to professionals — especially when it comes to refrigerant or electrical components. Call Quality Comfort if:
Our technicians clean coils, check refrigerant, and test airflow to catch problems early. Prevention = fewer breakdowns.
In Florida, your system is designed for a 20° split — that means if it’s 95°F outside, you should set your thermostat no lower than 75°F for optimal performance and efficiency.
Setting it to 70°F on a 100°F day? That will run your system nonstop, shortening its life and spiking your electric bill.
Q: How do I fix a frozen AC unit quickly?
Turn the system off and set the fan to ON. Let it run for a few hours to thaw the ice. Then check filters and airflow before restarting.
Q: Can I still run my AC while it’s frozen?
No. You risk damaging the compressor. Turn it off immediately and troubleshoot the root cause.
Q: Why does my AC keep freezing even after I replace the filter?
You could have a refrigerant leak or a problem with airflow elsewhere in the system. Time to call in a pro.
Q: How can I stop this from happening again?
Regular maintenance, clean filters, proper thermostat settings, and keeping vents open are key to preventing freeze-ups.
A frozen AC is more than an inconvenience — it’s a warning sign. Don’t let it turn into a breakdown. Call Quality Comfort Air Conditioning and Heating Inc. at 321-242-2513 for professional, same-day service across Brevard County.
We’ll get your system thawed, fixed, and back to blowing cool air in no time.