Up the energy efficiency of your fridge

Credit: iStock / EricFerguson

To make your fridge a lot more energy efficient, store leftovers in glass containers (because glass stays colder than plastic) and pack your fridge as tightly as possible to prevent (warm) air from circulating.

This also works great for packing coolers in the summer. The less air and water in the cooler, the longer it will stay frosty!

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