eli5 why do we have to cool food before putting it in the refrigerator?

Question

eli5 why do we have to cool food before putting it in the refrigerator?

In: 3

Answer 1

It takes energy for the fridge to reduce the temperature of an item. If you let an item cool down to room temperature before putting it in the fridge, then the fridge doesn’t have to use as much electricity. That being said, you don’t *have* to let it cool down first, but it will reduce your electricity bill if you do.