Viewing profile — pappn

I think 100 households per MW in milder climates is very conservative. Anectdata: I have a ~150 square meter, 50 year old house heated by electricity and heat pump. I live I Norway…

FYI, air-to-air heat pumps are very popular in Norway. There are models that have >2 COP in -15 C, for instance Toshiba Daiseikai 9S at 2.35 at -15C, and >5 at +7C.

Note that the impressing 9x% efficiency rates that we hear about are peak efficiency rates. There is something to gain in widening the operating ranges of this efficiency also. See…