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A comment on No, you can’t save £30 per year by switching off your “standby” devices. Parent comment

Re:No, you can’t save £30 per year by switching off your “st... by shagie on Wednesday April 27, 2022 @10:55AM (#31180664)
Another one of my "came across this in YouTube" things (started with the design of a hurricane lantern) Why Heat Pumps are Immensely Important Right Now - https://youtu.be/MFEHFsO-XSI

The key is the Coefficient of performance https://en.wikipedia.org/wiki/Coefficient_of_performance

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