The Coils Freeze When the Door is Open

A huge problem at our house is leaving the door open! For some reason I can’t explain, my kids like to run outside and leave the back door wide open.

To be fair, they’re just kids and we have an amazing backyard patio that extends off the back of the house.

It’s practically a separate living space. It can be hard to remember that you’re stepping foot outside sometimes. If it weren’t for the temperature difference, I don’t think people would ever feel like they were leaving a house and entering the outdoors, which is what we wanted when we built the patio. Unfortunately, our AC system doesn’t like it when we leave the door open either because it means that the cool air is escaping. When the cool air escapes, it causes the thermostat to signal an alert to our HVAC system to work harder to produce more cool air. When this cycle continues over and over again, the condenser unit coils freeze and it becomes a big issue. The first time the coils froze, we had to call an HVAC company to come out and thaw them. It was an expensive bill for a simple fix that we hated to pay for, but it needed to be done. Since that day, I’ve been diligent about asking the kids to close the door behind them. For the most part, they’ve been responsible about it. However, there is the rare occasion that someone forgets and the coils freeze over again.