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Frost Free Fridge Freezer Frost-free fridge freezers function by circulating cool air constantly around the refrigerator and the freezer compartment. This eliminates the need to manually defrost. They are equipped with small heaters to stop the formation of ice on the cooling coils. The heaters are turned on and off. This uses more electricity. Organise your freezer to reduce the chance of frosting. Labelling the drawers and shelves with the food types will help you find things quickly. Cost Frost-free freezers have a built-in heating coil that help