When you read that title, you probably expected to see a list of funny pictures of animals jammed inside air conditioners, or a picture of a truck that accidentally skipped over the curb and crashed through an outdoor condenser unit. Yes, weird things can happen that will cause an air conditioner to fail. You could probably think up some bizarre situations on your won.
But what this post is about is a bit more useful: when we say surprising reasons, we mean surprising to homeowners who aren’t familiar with HVAC equipment. But these problems aren’t surprising to HVAC technicians like us. We see them often. People are rarely aware of what can cause an AC system failure—and it can sneak up on them. So here are few of those surprises you don’t want to run into.