If you're getting hot spots you might want to add another fan. I used to have that problem in my old incubator and a fan took care of it. I also took a couple of blankets and draped them over the bator, that kept the room temp fluctuations from affecting the bator as much. The new bator isn't as touchy as my old one was so I can keep the room at whatever temp I like during incubation. Now that the chicks are brooding the room is at 75. Feels more like 80 in there though. Every time someone comes in to look at the chicks they start to remove their coats, etc. immediately. I kinda like the warm room, however I seem to be the only one that does.