RS7 wrote:I also should have stated that he is considering a ground source heat pump an not an air to air heat pump, which is much more efficient no matter how cold it is outside. Air to air are really expensive to run in PA, a ton of electrically in cold months.
I doubt your brother is going to be concerned with the heat pumps efficiency rating when he is freezing his arse off in the dead of winter. Go with a stoker boiler and live comfortably at a reasonable cost. I service my Axeman about every two days when it is bitter cold out, takes about 10 minutes. Dump the ash pan and toss a few bags in the hopper, done.