In this short, HVAC specialist Derek Cole explains that an air conditioner can develop a frozen coil when either airflow is restricted or the system is low on refrigerant. He likens restricted airflow to ice buildup in a freezer and notes that a frozen outdoor line indicates low refrigerant. Derek emphasizes that either condition is abnormal and advises that the unit be inspected by a professional.
If airflow is restricted in any way, it's going to cause that to freeze over. You'll see kind of like what happens in your freezer when you have too much ice going on there, right? You see that frozen over coil. Same thing happens with your unit. Also, a thing could be happening, especially when you go into cooling season, that you'll notice is it's low on refrigerant. We kind of hit refrigerant pretty hard last episode, so Go back and watch that. But if you're low on refrigerant, it will also tend to freeze over, and you'll start seeing that at the outdoor unit, that little line that goes from the outdoor under your house or in the attic. You'll start seeing that freeze over. That's the indication that you're having that kind of, of challenge as well. So a couple things going on. Could be airflow, it could be refrigerant. Either way, it's not normal, and it should be checked out.
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