If you live in McKinney, Plano, Frisco, or anywhere else in Texas, you know that your AC unit becomes a lifeline during the warmer months. To go without cooling for as little as a few hours can have your home feeling swampy and unbearable.
Though it may sound counterintuitive, it’s not unusual for your AC unit to be freezing up despite warmer temperatures outside. There are three main reasons your AC may be freezing up – poor airflow, low coolant, or a dirty coil.
Let’s break down what to look for when your AC is freezing up, how to fix it, and how to prevent it from happening again.
How is My AC Freezing Up if it’s Warm Outside?
If your AC is freezing up despite warm outdoor temperatures, it might seem counterintuitive, but it’s not uncommon.
When the outdoor temperature is warm, humidity levels are often higher. High humidity levels can lead to condensation forming on the evaporator coil. If airflow is restricted this condensation can freeze on the coils, causing the unit to freeze up entirely.
Low refrigerant levels are another common reason why your AC may be freezing up. As the months get warmer, homeowners often run their AC unit for extended periods, leading to potential refrigerant leaks. Low refrigerant levels cause the evaporator coil to drop below freezing, resulting in ice formation.
Even if air is flowing properly and refrigerant levels are adequate, accumulated dirt and debris can cause your AC to freeze up. Dirt and debris on the evaporator coil restrict heat transfer, causing moisture to freeze and accumulate. Regular maintenance, including cleaning the coil, can help prevent freezing and maintain optimal AC performance.
What Should I Do When My AC is Freezing Up?
If your AC unit freezes up, the very first thing you should do is turn off your air conditioning system. Continuing to run the unit while it’s frozen can potentially cause further damage to the compressor and other components.
Turning off the unit will also allow the ice to melt naturally. This may take several houses depending on the extent of the ice. Turning on the fan can help expedite the process by circulating warm air over the coil. If you decide to turn the fan on, it’s important to make sure that the cooling function remains off.
Once you’ve turned off the unit and allowed the ice to start melting, you can check the air filters to see if they may be restricting airflows. If they are dirty or clogged, replace the air filters.
If the air filters don’t seem to be the suspect, check for refrigerant leaks.
Start by visually inspecting the refrigerant lines and components of your AC system. Look for any signs of oil stains or residue around connections, joints, valves, or tubing. Refrigerants often carry lubricating oil, so oil stains can indicate a leak.
Inspect the evaporator coil (indoor unit) and condenser coil (outdoor unit) for any signs of corrosion, damage, or leaks. Use a flashlight to carefully examine the coils, paying attention to any areas where the coil fins may be bent or damaged.
If you suspect a refrigerant leak but are unable to locate it or if you lack the necessary equipment, it’s best to contact a qualified HVAC technician for a professional inspection. HVAC technicians have the expertise and tools to accurately detect and repair refrigerant leaks.
How Can I Prevent My AC from Freezing Up?
The best way you can prevent your AC from freezing up or experiencing other mishaps with your AC unit is with regular maintenance and cleaning. Remember to change your air filters every 1-3 months, especially during peak performance. This can help to maintain optimal airflow and prevent debris from accumulating on the evaporator coil.
In addition to replacing your air filters regularly, it’s critical that you schedule annual maintenance visits. During these visits, a professional HVAC technician will assess your unit, checking for any minor issues that may escalate into the need for costly repairs. They can inspect and clean the evaporator coil, check refrigerant levels, and ensure proper airflow, just to name a few.
You’ll also want to keep the areas surrounding your AC condenser or your air vents clear. Avoid placing furniture, curtains, or other obstructions in front of your vents, as this could obstruct airflow and cause your AC unit to overwork itself. For your AC condenser, otherwise known as the big metal cube outside of your home, ensure no bushes, trees, or other vegetation are causing debris build up.
Need a Hand? TemperaturePro McKinney Can Help!
Whether you need quick AC repairs because your AC is freezing up, or you want to set up maintenance visits to keep things running smoothly, TemperaturePro McKinney is here to help. Our expert McKinney AC technicians can provide prompt and professional air conditioning services, restoring your home to its original comfort.
We’re dedicated to servicing McKinney, Plano, Frisco, Allen, Lewisville, and surrounding areas with convenient, transparent, professional heating and cooling services. No matter your HVAC needs, you can count on the experts at TemperaturePro McKinney. Give us a call or book online today!
