I did not want to make the same point as others, but it has already been pointed out that 3-4 COP for heat pumps is the more common range for comparison than 2

I did not want to make the same point as others, but it has already been pointed out that 3-4 COP for heat pumps is the more common range for comparison than 2 COP. I have done the math in my area, which is very expensive for electricity, and it still pencils out without factoring in my reduced costs if I get solar (which yes, does finally pay for itself).