reply to redholm
Re: At 7F outside heat pump maintained 73F indoors
said by redholm:There is a widespread misconception that "heat pumps don't work in cold climates".
I do not understand why HP are not more popular in the US and why the common perception is that they are no good?
Actually undersized head pumps don't work well in cold climates. The "upstairs" system of my home gets to even cycle at 10F.