Recently moved into a new apartment with a few roommates that love to keep the thermostat around 70 degrees.

My BP's heat pad/hot side is still around 92-94 degrees, but the ambient temp. in her enclosure (plastic storage bin) is now usually around 73-76 degrees.

I would like to raise the temp. to around 80 degrees but I'm not sure what the best method would be.

I've thought about getting heat emitting bulb or maybe a general space heater for her side of the room but there are a few problems I've thought of such as increased humidity from the bulb being close to her water bowl.

Any thoughts on how to raise the ambient temperature?