




When an AC freezes up, it looks wild. We're talking solid ice buildup on the evaporator coil, ice forming on the refrigerant lines, even ice pushing out of the unit at the base. That's not just a quirky thing your system does - it's a sign something is seriously wrong, and the longer it runs like that, the worse it gets.
The most common cause? Restricted airflow. When a dirty filter chokes off the air moving across the evaporator coil, the coil drops below freezing and moisture in the air turns to ice. Fast. What starts as a filter that's been in too long can turn into a completely iced-over system that can't cool your home at all - and in some cases, it can cause the compressor to work harder than it should, which is where repairs get expensive.
We got out to this American Fork home, diagnosed the issue, and got the system back up and running. The fix itself isn't always complicated once you know what you're dealing with. But the key is catching it before it snowballs. A frozen system still running is doing damage the whole time it's iced over.
The simple takeaway here: change your filter on a regular schedule. It's one of the cheapest and easiest things you can do to keep your AC running efficiently all summer. If you can't remember the last time you swapped it, that's your sign to go check it right now. Most filters need to be changed every one to three months depending on your home.
If your AC is running but the house isn't cooling down, if you're seeing ice anywhere on the unit, or if airflow from your vents feels weak - those are all reasons to have someone take a look. Don't wait until the whole system shuts down.