i have a CHE on the cool side and a UTH on the warm side. I didn't worry about it too much before now b/c the temps do stay stable and I wasn't worried about it. but I moved back to OK yesterday and I need to make sure the temps get up to where they should be and stay there again. I seems pretty stable now, but my room here is quite a bit cooler than it was at home, so I want to make sure, accurately, that her temps aren't too low.