I would be slightly concerned about most space heaters and proportional thermostats. don't these type of thermostats control the amount of electricity being sent to the heater? Some of these heaters have fans and oscilators, etc. Might this be unsafe to artifically reduce the amount of electricity being sent to these devices. Now if there was a standard ON/OFF or HI/OFF space heater, then perhaps a thermostat (especially the non proportional ones) may work great. Thoughts?