Sorry I didn't see your comments. Yes, as long as you have four conductors, the Atwood thermostat will work fine and control the furnace as well as the heat pump. Ours works great.
My Dometec 13.5 stopped cooling and I want to change to an Atwood 15K but I am concerned with thermostat. My Dometec tstat controls my gas furnace. Will the new Atwood tstat control my gas furnace?