I've got my theater in the basement. I love the room for movies and such. However, it is cold down there in the winter. We only have 2 small heating vents for a finished 1000 sq ft area. Even both open, it doesn't do much good. I have a radiant space heater that I use down there. The kind that has a 800 watt or 1200 watt setting. It works ok, but I am afraid it's using to much electricity. What do you guys use or have heard about for heat in the basement like that?