The more space you use in your freezer, the more energy the freezer needs to cool the contents. And every time you open that door, you remove the cold air and the fridge needs to basically start over to cool more of the contents. It's extremely inefficient, and in no case whatsoever, is this a good suggestion. Sorry, but misleading methods like this, contributes to people freaking out at the end of their month when their energy bill comes in.
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