11 mo. ago • 94%

Heat pumps can't take the cold? Nordics debunk the myth

techxplore.com 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.

There is a discussion on Hacker News, but feel free to comment here as well.

Technology @lemmy.world Heat pumps can't take the cold? Nordics debunk the myth

15 comments

Think most people know this is the case. We use heat on pumps. It's not particularly cold but -1.

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I have a heat pump and a gas furnace. The furnace is only used if the heat pump isn't able to heat and that's typically around -25c. This keeps me off gas most of the winter.

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Science proves otherwise...in cold enough temps the heat pump is literally useless and you will need a backup source like electric dor gas/bio fuel.

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- Sitting up here in the Alps, winter approaching, laughing at your two-decades-out-of-date ignorance 😂
  
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  I live in NC where a very cold day is +20F and I have to say I do not feel my heat pump keeps my house very warm. Maybe l just have a very high expectation of what a warm house feels like, but based purely on comfort I would not pick a heat pump. My house is only about 7 years old, so maybe the technology has improved since then?
  
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  it’s just physics, and at sub-zero temperatures the air heat pump simply switches to electricity it’s another matter if your pump uses the ground or a well, then of course it will work at any outside temperature
  
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  Physics isn't wrong. Ground source is better, but air source won't keep up with multiple days of sub temps
  
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