Good Morning all, i have a Mt Vernon non self cleaning. I was told that these units have too use the thermostat that it came with, something about compatability with the main board. I find it hard to believe that there is another thermostat out that works with it. The problem i have is that if i set it at 70 it shuts off at and restarts at 70. There is no dead spot, it use to be that the stats wpuld heat to like 72 the not rrheat till 68. This use to be called a dead zone. Is there any stats out there that will do this???? preferably a smart stat????