A freezer covered in frost can be frustrating and inefficient. Not only does it take up valuable space, but it can also lead to increased energy bills and potential damage to your appliance. If you’ve noticed frost building up in your refrigerator’s freezer, there are several possible causes. Understanding these reasons can help you address the issue before it turns into a more significant problem. Here are some common reasons why your freezer is frosting over, and what you can do to fix it.