I am building a new home and have to pick between York and Carrier air conditioners. The price is about the same. One unit will be a split system and the other will be a package unit.
It does get too cold for heat pumps here on occasion so propane is a must for the heat. Are the duel fuel units any good? Can you select what temperature the duel fuel units switches over from electric to propane? I would like to be able to manually switch it between propane and electric if possible.