Ice on the AC's Evaporator Coil: What This May Mean

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One of the aspects of air conditioning technology that often puzzles homeowners is that ice isn't a regular part of Air Conditioner operation. It's easy to understand why individuals not familiar with a/c systems may believe that ice appearing on parts of the Air Conditioning is not a severe problem. After all, the a/c unit sends air that feels crisp and cold, as if it were blown over ice ... why shouldn't ice be anticipated?

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But Ice on an Air Conditioning Unit Suggests an Issue!
The fact is that the appearance of ice-- generally along the indoor evaporator coil-- shows something is wrong with the air conditioning system. For reasons we'll take a look at in the next section, the evaporator coil is remaining colder than it should, which causes the moisture that condenses along it to freeze. This starts a vicious circle, because ice on the coil makes it harder for the refrigerant inside it to soak up heat and raise its temperature, and this results in much more ice. A completely iced-over coil implies an Air Conditioning that offers no cooling at all.

Reasons This May Happen
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The a/c unit is losing refrigerant to leakages. With a lower amount of refrigerant in the evaporator coil, the coil will draw less heat, and the remaining refrigerant will remain too cold.
The air filter for the HVAC system is obstructed with dust, lint, and particles. This will not let an adequate amount of warm air into the a/c to decrease the temperature level of the coil, triggering the freezing process. (This is among the many factors you should alter out the filter routinely in summer season.).
The coil is covered with grime. Any layer of dirt, dust, etc. on the coil insulates the refrigerant inside from correct heat absorption, and this causes ice developing.
Don't scrape the ice off to attempt to fix this! Not only do you risk damaging the coil, however you will not attend to the real root problem. Rather, give our technicians a call for repair work.