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 ...

No one wants to waste a refrigerator full of food, but if you keep the temperature too cold you can hike up your utility bill. There's a sweet spot right above freezing that you need to hit, and a ...