There are residential air source heat pumps that can work well at those temperatures. Mitsubishi has some [1] that provide 100% capacity down to 23 F and then fall off fairly linearly to 76% capacity at -13 F. Fujitsu has some [2] that go down to -15 F.

It's probably a good as people's existing systems reach replacement age to replace them with that kind of system.

[1] https://www.mitsubishicomfort.com/articles/technology/keep-w...

[2] https://www.fujitsugeneral.com/us/residential/technology/xlt...