Ice appearing on parts of an air conditioning system, usually along the indoor evaporator coil, is a common HVAC problem, and one that people often misunderstand. To someone unfamiliar with how air conditioning works, seeing ice may simply seem like a sign the AC is working extremely well, making the air so cold that it’s creating ice.
This isn’t what’s happening. Ice should never appear on an air conditioning system, and its presence makes it harder for an AC to do its job. If the air conditioner doesn’t receive repairs, the ice will continue to grow and eventually cause the AC to stop cooling entirely.
Below we’re going to look at why ice might form on your air conditioner and why you need it fixed right away.