3 ms·

Just had a heat pump installed (Vaillant) - at -1 degrees outside I'm getting a COP of > 2.6. So they are ready.

• sampo 4y ago
  > -1 degrees outside -1F is -18C -1C is 30F
  • ComputerGuru 4y ago
    They're from London, so it's the "not even cold but it's negative" rather than "actually cold and heat pumps aren't a good idea" measurement.
    • Freestyler_3 4y ago
      for those places where the scop is low, you have to drill for heat. If that's not possible then maybe a system where you can burn wood to suck the heat out of that.