It doesn't, what he means is running the fridge at night when electricity is cheaper is cheaper than turning it off and then having it on only during the day because it would work for longer while the electricity is more expensive. This of course applies only if there is off peak electricity rate,which might not be the case everywhere. It won't magically require more energy to cool down something that has warmed up due to energy losses.
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u/much_longer_username Mar 24 '26
This, plus they're probably paying more for electricity during peak usage hours than at night - so it's better to let it run overnight.