Had a Bryant dealer come over and give a quote on a new system. He wasn't too keen on a HP to use with the Evolutin as it already has 2 stages. He thought that the 80% would be the right system to get. He also said that a "valve" on the HP can freeze up in the winter and you need to go out and kick it.
THE QUESTION: Has anyone installed a dual heat system and does anyone have experence with a dual heat system in the part of the country that can get a little cold. Live a couple miles south of cheese county.