Yeah, that is a huge problem since my downstairs breaker is only 15A. I
don't have much electrical experience so it wouldn't be practical for
me to add another breaker (and I have to keep it up to code). As far as
using a IR heater via a fan ( I've seen these on braun.com ) could I
hardwire this ?

I don't have a plug in shower area since it is seperate from the rest
of my bathroom (it is behind a door)