Yes the UTH does have a thermostat. And as far as him being in his hide; He doesn't go in his hide as often as he sleeps in between the wall of the enclosure and the hide box itself. He does cruise the cage in the mornings. Obviously he cruises at night but recently he has stated roaming during the mornings. He stays on his cool side a lot more than his hot side. I thought of adding another hide but he rarely uses the one he has. I really appreciate the help and advice also!