6. Fill your freezer
If you’re pleased that your freezer isn’t filled to the gills with foods that you’ve stuffed in there and forgotten about, you might want to rethink that. Yes, a freezer that’s always full of food is carrying an inventory of edibles that cost a lot. But an empty freezer has to work much harder to stay cold than a filled one. Once your freezer is loaded and all those items are at their frozen temperature, they will help keep the freezer cold. A mostly empty freezer will fill with warm air every time you open it, and then will have to get cold again. There may be a good compromise between a full and empty freezer that will serve you best.