I just purchased a Presto HeatDish Plus from Costco, that's an infrared heater. It can be aimed at certain parts of your body if you have it closer than 3 feet or your whole body between 3-10 feet. It's not meant to heat a room, just your person, and might work for those who live with other "normal" humans...so you can still share the same space. It was $60.

As I've written before, I'm a fan of infrared saunas, so I'm hoping this works out. If anyone else uses one, I'd love to hear your opinion.

It does seem to work very fast (within minutes) heating up my limbs that don't react much to a standard heater. The only other thing I've ever been able to get to work is soaking in a hot, hot tub for a long, long time.