I'm up in northern AZ, and we just set the house to about 77 year round and it makes our snake room stay at 78-80 consistently. We still give each their own hot spot since the room never gets above 80, and we have some that are better in cooler temps in another room that stays a few degrees cooler. Don't forget to QT new additions in a totally separate room if possible and I adore my Hog Island BCI: they're really nice boas.