I have a heat pump heating and cooling my basement in Atlantic Canada.

Temperatures in the winter hold steady around -20C with some dips a few times in the -40c range when accounting for windchill.

Works just fine. I keep my basement a nice 21C. Heating works well. I see lots of disinfo posted online about heat pumps not working in the cold and it’s all horseshit. Make sure you’re buying a heat pump that’s built for colder temperatures and you’re golden.

The cold-climate ones start to struggle at around -20C, for reference. (Not the windchill, that’s an imaginary number)

If that doesn’t regularly happen where you live, you’re fine.

I got one put in my 1200sqft manufactured home 4 years ago. It was able to keep most of the house 68 degrees with it in the single digits without breaking the bank. It struggles the most with just above freezing and foggy. This is because it has to constantly defrost the outside unit.
Overall 10/10 compared to forced air electric heating.

I see most of the people in the comments here have older model heat pumps.

Newer model heat pumps are quite a bit better than even ones made 10 years ago.

My dad had one put in two years ago for his garage kitchen, and it’s worked quite well, even in fairly cold temperatures. Most importantly, that heat pump doesn’t have an auxiliary mode, and yet it still works in sub freezing temperatures.

It would work even better if it were ground source, but those are both expensive and require digging up the yard.

This place uses a heat-pump for cooling, in the summer, but it uses a furnace for heating.

It used to reach -20C or colder, here, in the winter…

it’s rained damn-near every week, this winter…

since there is sooo much lag, between the climate-forcing adulteration of our atmosphere,

and the actual climate’s temperature,

it looks like we’re going to be … needing to find some other planet to be inhabiting, in a century…?

Based on actual history, this planet’s current equilibrium-temperature is +5C…+6C, not anywhere near the +1.5C delusion people are still believing-in.

but when one factors-in methane ( & only that one ), that we add, it works-out to +8C…+9C planetary equilibrium… ( using methane’s 20-y equivalent, of 82.5x factor, given the current 1.3ppm to 1.4ppm that we have unnaturally added of methane )

anyways, here’s the link stating that at this atmospheric CO2 the planetary-equilibrium-temperature is between +5C & +6C, in case anyone is interested:

Evolution of global temperature over the past two million years https://www.nature.com/articles/nature19798