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Heat pumps can't take the cold? Nordics debunk the myth (techxplore.com)

submitted 1 year ago by [email protected] to c/[email protected]

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Heat pumps can't take the cold? Nordics debunk the myth::By installing a heat pump in his house in the hills of Oslo, Oyvind Solstad killed three birds with one stone, improving his comfort, finances and climate footprint.

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[–] [email protected] 9 points 1 year ago (1 children)

I mean, it's not about them not working, it's the efficiency. Most models will switch to a normal electric heater, if they can't extract anymore heat from the surroundings. At which temperature that happens, depends on your type of heat pump.

[–] [email protected] 6 points 1 year ago (2 children)

Not correct for modern heat pumps. They work down to at least -40F without switching to creating heat.

[–] [email protected] 3 points 1 year ago

That's why I said it depends on the type of the heat pump. Some can go really low, the cheaper ones not. At some point (the latest at -273.15C :D) they need to switch.

[–] [email protected] 1 points 1 year ago

The overwhelming majority of even high end cold climate ASHPs do not function at -40 C/F. -20F, that's doable.