My 2012 Interstate manual says that the thermostat is wired to a 5amp breaker on the front of the furnace. May want to check that first before you go looking for a new thermostat.
WHY it's wired to a breaker on the furnace, and not to a fuse on the house fuse panel, I don't know. But that's what the manual says. And since the same thermostat controls both A/C and furnace…
Engineering: Finding complex solutions to simple problems you didn't even know you had.