Appliances can be deceptively low-maintenance. Take your refrigerator, for example. It's easy to assume it's quietly doing its job in the background, on autopilot. And, to be fair, it usually is. But ...

We all learned in school that water freezes at 32 degrees Fahrenheit. So, the logic would follow that a freezer only needs to be set at 32 degrees, right? But the reality is, to safely freeze food, ...