How this type of heating works:  It captures the heat given off of a candle flame and then concentrates it into a steel and ceramic radiator assembly. The ceramic surface will act as a thermal mass and begin to radiate the captured thermal energy into a room.  You can learn more and make your own here: http://www.tacticalintelligence.net/blog/how-to-make-a-candle-heater.htm  Or you can purchase a completed one here: http://www.heatstick.com/_KanHeet01.htm