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Heat pumps can't take the cold? Nordics debunk the myth
(techxplore.com)
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this post was submitted on 01 Nov 2023
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How is this a myth? Nobody with more than two braincells thinks that heat pump heaters don't work in the cold.
If we start comparing everything that idiots think to a mythological mystery worthy of note, we'll be here for an eternity.
It really depends on the type of heat pump. Air-sourced heat pumps generally don't produce heat below -30C and below -10C they generally lose enough efficiency that you're better off using electric baseboard heating.
My air sourced heat pump keeps my house warm just fine in the Finnish winter where temperatures of -30C aren't unheard of. I'm not exactly sure how it works, but I assume there's coils that'll produce the heat by electricity if nececcary, making it at worst as efficient as direct electric heating, which is what I'd use otherwise. Here like every other house has a heatpump like that and I don't remember hearing anyone ever complaining that they're not working.
I think mine is undersized and close to 20 years old now. Reading your response is yet another reason I have to go through with upgrading everything.