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Keeping refrigerator door closed saves energy

Just about everyone in the U.S. has heard the words: “Close the refrigerator door.” Stereotypically, this is associated with an indecisive teenager.

How important is that closed door, really? Is it still important, given how much fridges have improved?

If you are using a really old fridge as your primary fridge, replacing it will save money in the long run. The easiest way to save money on refrigeration is to replace any fridge built more than 20 years ago with a new EnergyStar-rated refrigerator.

In the 1970s, a refrigerator might have consumed 2,200 kilowatt-hours a year. By the 1990s, impro...

 

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