Buying a refrigerator is a big deal. If you make the wrong decision, you'll have to live with it for years, maybe even a decade or more. Don't freak out though. While it isn't everyday you shop for a large appliance, a little planning ahead of time goes a long way. This guide lays out the usual mistakes people tend to make when buying a fridge. Not surprisingly, there are many pitfalls to avoid. On the list are things to consider before you step into the store, or click that buy button.