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How to Maintain a Frost Free Fridge and Freezer A frost-free refrigerator and freezer eliminates the need to defrost manually. This can save you time, effort and electricity when compared to a traditional refrigerator/freezer. If ice crystals appear on the packaging food, it could be damaged. These crystals could cause freezer burn and alter the texture of your food. Defrost The process of defrosting your freezer isn't glamorous nor fun however it is an essential part of maintaining your fridge and freezer.