I don't understand at all, how they create the appropriate level of heat without drying out the air just like a ceramic heat emitter. Or why they can't burn your snake, like a CHE would if the snake could reach it. I'm using a 100w CHE now and I'm having to pipe in mist from a humidifier (admittedly I'm still using a glass tank with screen top) :/ I'm looking at something like a T8 or reptile basics equivalent and it seems like switching to RHP would be better - UTH won't keep the ambient from getting too cold - but it doesn't make sense to me that they work the way they are said to. I admit freely I have never seen one in the flesh. Also it seems like the t-8s (and equivalents in design and price) are designed with belly heat in mind rather than RHPs...?