A frost-free freezer is one that doesn’t require you to manually defrost it. Frost and ice buildup is prevented because the freezer circulates air continuously. This means that moisture in the air is constantly being drawn out, so it can’t turn into frost or ice.
Frost-free freezers are more expensive than traditional freezers, but they save you time and energy in the long run. They also prevent food from spoiling as quickly, since frost and ice can cause freezer burn. If you have a lot of space in your kitchen, a chest freezer might be a better option for you since they tend to be more energy-efficient.