this post was submitted on 30 Apr 2026
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Science Memes

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[โ€“] AnnaFrankfurter@lemmy.ml 7 points 11 hours ago (1 children)

What about heat pumps they have efficiency in the range of 200-300%

[โ€“] stom@lemmy.world 3 points 1 hour ago

Heat pumps move heat around, whereas radiators create it.

The "efficiency" of heatpumps relates to heat they import into a system for a given amount of power, compared to creating heat with that power. They are not generating that heat. They are moving it.

Similarly, it's much more energy efficient to use a wheelbarrow to collect ice and move it inside, than it is to make ice cubes in freezer.