Summer starts early in Alabama, and soon you’ll be relying on your air conditioning unit to get you through the hottest days in good shape. If you notice ice accumulating on the outdoor compressor, though, your home’s comfort may not be a sure thing. Here’s a closer look at the two possible causes of this ice and what to do about them.

Restricted Airflow

Your air conditioning unit needs proper ventilation. The evaporator coil is responsible for cooling warm air that enters the system using refrigerant. When there’s not enough warm air moving over the evaporator coil, it may drop too low in temperature and freeze. This frost can travel to refrigerant lines, spreading the problem. When humid air is hitting the coils, the icing accelerates, quickly condensing and freezing.

Clogged air filters and closed or blocked vents are conditions that commonly inhibit proper airflow. There may also be dirt buildup on the evaporator coil interfering with its function. In some cases, a collapsed air duct or issues with the blower fan will prevent good ventilation.

The best way to defrost the ice is to turn your air conditioning’s thermostat into the off position. Switch the fan on and let it run without cooling for about four hours so the fan will blow warm air over the frozen coils to thaw them. Check your filter and clean or replace it if it’s dirty. Check all vents and remove any obstacles interfering with it, such as drapes, furniture, or grime buildup. 

Low Refrigerant Level

The other possibility is low refrigerant. This chemical is necessary for absorbing heat from your home and moving it outside. When levels of refrigerant are too low, the pressure inside the evaporator coils begins to drop along with the temperature, leading to ice.

The reason behind refrigerant levels getting too low is usually a leak. You may hear a hissing sound near refrigerant lines or your vents will feel warm to the touch. A leak can also spike your utility bills as your air conditioning unit tries to compensate for the problem by running longer than it normally would.

The best solution is to call an HVAC contractor. Refrigerant is toxic and is safer in the hands of a professional. To get your system ready for inspection in the meantime, thaw your system by running the fan without cooling for four hours.

If you notice ice on your outside air conditioning unit, the experts at Comfort Solutions Heating & Cooling Inc will set your system right promptly. Located in Foley, AL, since 2005, the HVAC contractor offers 24-hour emergency service to ensure your heating and air system is in top shape. Their experienced technicians can diagnose and repair the issue as well as make honest recommendations for the next steps, whether you need replacement parts or a new system. To make an appointment for AC repair, call (251) 967-4822. For more on their financing options, visit them online. 

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