It may seem strange, but one of the most common summer AC issues is freezing. If you notice your air conditioner isn’t blowing cold air or see ice buildup on the unit, it’s important to act fast. Ignoring the problem can lead to costly repairs—or even complete system failure. Here’s why your AC freezes up and what you can do about it.

Common Causes of a Frozen AC Unit

1. Restricted Airflow

Poor airflow is a leading cause of AC freezing. Dirty air filters, blocked vents, or clogged ductwork make it hard for warm air to reach the evaporator coils, causing them to freeze. Regularly changing your air filter and keeping vents clear can help you avoid emergency searches for “emergency air conditioner repair.”

2. Low Refrigerant Levels

Refrigerant is essential for the cooling process. Low levels—often due to leaks—cause pressure drops and coil freezing. Modern refrigerants like R-32 and R-454 are more efficient, but any system can develop leaks over time. Always call a professional for refrigerant issues.

3. Thermostat Set Too Low

Setting your thermostat too low can overwork your system, especially during extremely hot days. Over time, this stress can lead to freezing. Be mindful of your thermostat settings to protect your HVAC.

4. Dirty Evaporator Coils

When evaporator coils get dirty, they can’t absorb heat properly, which can lead to freezing. Regular professional maintenance helps keep your coils clean and operating efficiently.

How to Fix a Frozen AC

• Turn off the system immediately to prevent further damage.

• Check and replace the air filter if it’s dirty.

• Inspect airflow around vents and clear any obstructions.

• Allow the ice to melt completely before restarting.

• Schedule a professional inspection to identify and fix underlying problems.

Prevent Freezing with Regular Maintenance

Avoid the need for “24-hour A/C repair” by scheduling regular maintenance visits. Preventative care keeps your system running efficiently and extends its lifespan.

Call the Experts at Jack Frost Heating and Air Conditioning

If your AC is freezing up, don’t wait. At Jack Frost Heating and Air Conditioning, we offer quick and reliable HVAC services to keep you comfortable all summer long.

📞 Call 865-573-5777 or visit www.jackfrostheatingandair.com to schedule your service today!