Heat pumps work extremely well in the Nordic countries and are therefore very popular. That's because due to the cold winters houses are already well insulated, though very old houses less so. Which means the houses are in general reasonably energy efficient to start with, so a heat pump providing 3.5-6kW of heat is generally sufficient. That would be to the main area of the house, so yes the heat pump is the primary heating system (for those who use them) in the sense that it's the heater used for the main parts of the house - think living room, kitchen area. There may well be normal electric heaters in other rooms, if deemed necessary, but other rooms (food storage, bedrooms etc) don't usually need much, if any, heating).
Of course in the Nordic countries you also have areas very far from the ocean, and there it can get very cold. Down to -50C in some cases, and regularly -30C or colder. I imagine heat pumps aren't used much there. But elsewhere (i.e. most places) they are great. In those places you see them absolutely everywhere now.
Of course in the Nordic countries you also have areas very far from the ocean, and there it can get very cold. Down to -50C in some cases, and regularly -30C or colder. I imagine heat pumps aren't used much there. But elsewhere (i.e. most places) they are great. In those places you see them absolutely everywhere now.
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