If you notice ice forming on the hose or refrigerant lines of your home's air conditioner, it's a sign that the system may not be functioning properly and should be addressed promptly. The ice typically forms when the evaporator coil becomes too cold, which can be caused by restricted airflow or low refrigerant levels. The first step is to turn off your air conditioning system to prevent further damage. Continuing to run the AC while it’s frozen can strain the compressor and potentially lead to costly repairs.

Once the system is off, allow the ice to melt completely. This can take several hours, but speeding up the process by running the fan without the cooling mode can help. While waiting, check your air filter. A dirty or clogged filter is a common cause of airflow restriction and can easily be replaced by the homeowner. Also, ensure that your vents are open and unobstructed, and that nothing is blocking return air grilles. If airflow doesn’t seem to be the issue, it’s possible that the system has a refrigerant leak or another internal problem that requires professional diagnosis.