I live in Denver, CO. Obviously we have cold winters here. The good news for me is that when I would notice the problem, I would yank the damn thing off the wall and let it completely die. That is the only way to fix it. That would fix it for about 5 days or so, before it would happen again. Additionally, I have a home that has 3 stories that face south. No shade. So, once about 9 AM rolls around, my heat won't kick in all day until about 6 PM. At that point, we have a fireplace we use as well. This would be a much larger problem for me in the summer for running AC. At that point - yes, I would have yanked the stupid thing off the wall and put back my other thermostat that I still have laying on a shelf in the basement.