This is typically caused by leaking refrigerant which must be repaired immediately. How to prevent frozen coils Clean and replace filters at least four times per year to maintain airflow across the coil. Keep your blower fan and motor well-maintained to ensure that it blows enough air across the coil.
Check your thermostat and controls so the unit operates within its designed temperature range while maintaining your indoor temperature at a comfortable level. Recharge your refrigerant if the levels get too low. Checking refrigerant pressure should be part of routine maintenance and should only be done by a professional.
Keep your evaporator coil clean to allow sufficient heat transfer from the air to the refrigerant flowing through the coil. This keeps the unit operating at a higher efficiency, lowering the risk for frozen coils as well as reducing your utility bills.
Next, check the air filter. Low system airflow is one cause of coil icing, and a clogged filter definitely reduces airflow. When system airflow drops below specs, refrigerant circulating through the coil can't extract sufficient heat energy. Refrigerant temperature plunges into the range below 32 degrees. As the coil continues to condense water, ice inevitably forms on freezing coil surfaces.
If the filter appears extremely dirty or clogged, install a new filter. Wait for the ice to melt off the coil, then restart the system. If icing recurs, shut down the system and call in professional help. Another possible reason for low or no airflow could be an extremely dirty blower or malfunctioning blower fan.
Further diagnosis and repair by an experienced service tech is indicated. Image via Wikimedia Commons Facebook. Click to Open in Print View. Search for:. Pin It on Pinterest. Increase Font Size. If you HVAC system exhibits any of the above signs and symptoms, it is extremely important that you address the issue as soon as possible. A frozen air conditioner is never a good thing!
If you notice that you have frozen evaporator coils, the first thing you should do is turn off your system at its source — the breaker box. While you are inspecting the possible causes and fixing them, your coils should be able to defrost completely. If your evaporator coil has frozen up, the first thing you should do is turn off your unit.
Make sure to turn it off at the breaker box. If you continue to run the unit while the coil is frozen, it could cause extensive damage to the system. Some signs that could indicate you have a bad evaporator coil in your cooling unit near Oklahoma City include:. For expert repair services on evaporator coils, call on our highly trained technicians at Interstate today!
To thaw a frozen air conditioner can take several hours or even the entire day! Make sure to schedule a repair or inspection service for after the unit has thawed, as there is little a technician can do when a unit is frozen. Contact us today to get on our schedule! You can find your evaporator coil in your indoor air handler system. See this energy. If dust and dirt build up around the evaporator coils, which transfer refrigerant to the heat pump, it will put extra strain on your system to condition the air, putting your evaporator coil at risk of freezing.
The coils need to be cleaned periodically for proper heat absorption to occur; otherwise, the coils may just freeze over. This is another reason why it is important to schedule annual professional maintenance — your system will be cleaned and inspected in order to avoid potential problems like this one.
Better yet, join a home maintenance plan so you never forget this important home maintenance task. Schedule professional HVAC maintenance once a year to avoid these sorts of problems.
Watch this video and learn how:. If you do choose to clean your evaporator coils yourself, make sure you are using the proper equipment!
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