Im probably gonna catch a verbal beating here for saying this but I think that sometimes its okay to think outside the box on reptile husbandry. I turned off my UTH in each enclosure a long time ago because the room that I keep my snakes in can only get down to 85 degrees(f) on a good day. My snakes are doing great. They eat like champs and dont show any signs of stress other than a little retained shed for one (but it was gone with a little soaking). I just monitor them throughout the day and they are fine.