Rack temps

[Ascended]

My oil filled heater does most the work for keeping my collection happy. Being in Texas certainly helps though. During the hot months it seems none of the heaters have to do much. Today around 11am I walked into my snake room and checked my oil filled heater and found it cool to the touch......the ambient temp in my room? 82F. Sometimes in the hot months I will leave the door of my snake room cracked to let some hot air out during the hot time of the day.

OK, now you have me more than interested this method. I have some oil filed heaters for emergencies, power cuts and such. I could use one or two of them in my snake room.
How would do you manage the temperatures in the room. Their own internal thermostats or another way?