Are you trying to cool down in the summertime heat, but it’s blowing warm air instead? The reason may be due to your AC freezing up. A frozen air conditioner occurs when the system is unable to warm the cold coils, turning normal condensation into solid ice. When this happens, you need to know what to do so you’re not suffering in the heat.

If you are wondering why your AC is freezing up, you’re in the right place to find the solution. At Quality Plumbing, we specialize in helping our neighbors fix their HVAC and plumbing issues. We’re here to help you solve your problems efficiently and effectively, and if you need professional service for your AC freezing up, contact us for our expert HVAC services.

If you notice a sudden drop in your AC’s performance, checking for a frozen AC is a simple first step. You can tell your AC is freezing up if you see visible ice on the indoor unit, feel warm air blowing from the vents, or notice water pooling around your indoor furnace. Recognizing these early signs helps you figure out why your AC is freezing up before permanent and costly damage.  

As stated earlier, your AC freezing up is due to the cold coils not receiving enough warm household air to keep condensation from turning into solid ice. Understanding these specific mechanical triggers is the key to solving why your AC is experiencing this issue:

• Blocked Air Flow: Clogged air filters or closed vents trap cold air inside the system.
• Low Refrigerant: A chemical leak lowers the pressure inside the system, causing the coils to drop below freezing temperatures.
• Dirty Evaporator Coils: Dust and pet hair insulate the coils, blocking heat absorption.
• Malfunctioning Blower Fan: If the fan motor breaks, warm air stops moving over the coils.

Any single failure in this delicate mechanical balance might be the reason your AC is freezing up during the hottest days of the summer. Don’t ignore any of these problems, as it will only lead to a complete system breakdown.

[Related: How to Improve Indoor Air Quality]

When your AC freezes up, there are steps you must take to stop components from burning out and save you thousands of dollars in replacement costs. Following this strict step-by-step process is the safest way to handle the situation:

• Shut off your AC: Switch the thermostat from “cool” to “off” the moment you realize your AC is freezing up.
• Thaw the ice: Turn the face setting to “on” to blow warm room air over the ice.
• Dry the system: Wipe away excess water to prevent electrical shorts and water damage.
• Diagnose and fix: Check the air filter and vents to determine exactly why your AC is freezing up in the first place.

Diagnosing and repairing an AC system requires extensive training and proper equipment. If you suspect your AC is freezing up, it is best to call Quality Plumbing. From chillers and boilers to frozen coils, our HVAC services make us your one-stop solution for all plumbing and HVAC needs. Contact us today and tell us about your HVAC problems.

[Related: What is An AC Tune-Up?]

Preventing the issues is much easier than dealing with the water mess or even costly repairs. You can prevent your AC from freezing up by changing your air filters monthly, keeping all room vents open, and scheduling annual professional maintenance with HVAC experts.

Simple daily habits, like clearing leaves and debris away from your outdoor unit, also prevent conditions that cause your AC to freeze up. If you maintain proper airflow through the entire house and stay proactive with maintenance, you can avoid a malfunctioning AC in the middle of a severe heatwave.

You should contact HVAC professionals when your AC continues to freeze after changing the filter, or if you suspect a dangerous chemical refrigerant leak. Repairing this issue requires specialized tools and pressure gauges that only licensed technicians possess. In fact, it is dangerous to attempt to handle toxic chemical refrigerants yourself.

Calling an expert is the safest way to address this issue. A qualified HVAC technician, like one from CLEAR Restoration, will permanently resolve your AC freezing issue and keep your systems running smoothly.

Remember, restricted airflow and low refrigerant are the primary reasons your AC is freezing up, and turning the system off is the first step to fixing it. Ignoring the ice will destroy the compressor and lead to severe indoor water damage.

Don’t be left without an AC during the hot summer weather. Contact the HVAC technicians at Quality Plumbing for quick, efficient service that delivers lasting results and keeps your systems running all summer long.