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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 zarzavat on Wednesday April 27, 2022 @05:44PM (#31186196)
All heaters are 100% efficient in a closed system. However, your house is not a closed system. It’s a spatial region of an open system. In this context it makes sense to talk about efficiency as being lower or greater than 100%.
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Re:No, you can’t save £30 per year by switching off your “st... by _carbyau_ on Thursday April 28, 2022 @01:10AM (#31188967)
I wish this were made evident to the hoteliers with bar fridges kept in sealed cupboards...
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