We’ll cut to the quick: Yes, something is wrong with your central air conditioning system if you notice ice forming on its coil. If this was your first instinct, then you’re thinking along the right lines. People often dismiss the appearance of ice on an air conditioner as a sign that the system is perhaps working a bit too well. The air coming out of the AC is cool, so why wouldn’t ice be part of the process?
But as you may already know, an air conditioner doesn’t use ice to cool down the air it sends into a home. What it actually does is remove heat from inside the house and release it outside, a process called heat exchange. If the air conditioner is working correctly, no ice should develop during this absorption and release of heat.