Depends on the heat pump, and the quality of your house. Hopefully houses in northern US states are of better quality than houses in California or West Virginia/South Ohio, so a furnface might not be needed.
Because for the scandinavians reading the thread and with the "It works in my country", US house build quality, in my experience, is even worse than UK houses build quality (and that's a pretty low bar).
Because for the scandinavians reading the thread and with the "It works in my country", US house build quality, in my experience, is even worse than UK houses build quality (and that's a pretty low bar).