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Oxford study proves heat pumps triumph over fossil fuels in the cold
(www.nationalobserver.com)
This is a most excellent place for technology news and articles.
Which is the absolute minority on that regard, most people live in climates where it doesn't get that cold.
1.25% of population. The minority point stands
Really? Where in the US or Canada do tens of millions if people live with AVERAGE winter lows of -25F?
Fairbanks AK seems to be widely regarded as the coldest US city, and that is -15F average lows. If I move to Prudhoe Bay on the northern coast of Alaska, then in find the -25F low I’m looking for. 
A quick search suggests Winnipeg is the coldest major city in Canada, and it doesn’t quite reach -20F average. There are of course some more remote towns that get colder; Canada goes pretty far north.
I'd also add that like, for a lot of Scandinavia heat pumps work just fine? Like does America just have some really bad heat pumps or something?
I think the only reason why you wouldn't install one here (aside from obvious cost issues) would be if you already have a robust heating system built into your home, like a hot water system. And if that's the case, you can use the heatpump of the earth - geothermal! Use the power of the earth's molten core to heat and cool your home!
(... geothermal isn't as ubiquitous as I make it sound it's just, really fucking cool)