• Cort@lemmy.world
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    2 months ago

    I think you’re forgetting ground source heat pumps. They’ll work fine at -40 because they don’t rely on air temperature.

    • ColeSloth
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      2 months ago

      Those are different and that’s cheating. It’s not what this article is referencing or talking about.

        • ColeSloth
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          2 months ago

          Geothermal heatpumps that gather the heat from underground below the frost line are different and much more time and space extensive than a regular heatpump.