How well do they function? Do they provide nice consistent heat? How's the noise? Sorry to clog up HN with a random request of a product quality review but I'm in the market right now to replace my furnace as well. Thanks.
For a similar reason, heat pump water heaters tend to have a larger storage tank, as they take longer to heat the water and you want more of a usage buffer.
It also appears that the tech for the more typical air source heat pumps has improved significantly in recent years which makes it more viable for colder climates
If above ground ranges from 0-100 degrees F, underground likely ranges from like 64-68 degrees F, which makes it really energetically "cheap" to get to your preferred temperature range, heating to idk 70 at most and cooling to probably not even 65.
Why do you even respond if you don't know enough about heat pumps?
But do go on about how I don't know enough.
Modern heat pumps do fine well below 0 degrees Celsius. Here's one that's great to -15 C and okay down to -25 C[0]. If you search cold-climate heat pumps, you'll find plenty of information about how modern heat pumps are fine in most the temperatures you'll find in most of the US (including up north).
(I have heard that a lot of them are still only available in Europe, but you can definitely find some in the US.)
So his point still stands.
"Below 0° Fahrenheit, heat pumps can still heat your home with more than twice the efficiency of gas heating or standard electric heating (such as electric furnaces and baseboard heaters). They’ve been tested and approved as far north as the Arctic Circle, and are popular options in very cold countries like Finland and Norway."
Finland has over 60% heat pumps.
And heat pumps, just to be clear, work by generating a temp difference. The main problem is the efficiency and that drops also because there is a heating cycle needed for the air intake.
How many models did you actually research yourself?