I am hoping to pour a floor in my shop this summer. I am going to put the pipe in for the floor heat, but instead of the pretty expensive heater for it I am going to wrap my wood stove w/ copper tubing and put on a small circulation pump so the fluid will heat when the stove is going and the pump will move it around. Sometimes if I am busy or gone I don't go in the shop for a week or 2 /forums/images/graemlins/frown.gif so I can't see paying to heat it when it is not getting used!
I have also seen people make their own setups using a small hot water heater and a pump.