You do not have to be cold in order to money during your utility balance. How annoying is it to you should be wrapped up in jackets or blankets when you're trying to simply move around your own house.
If you have in mind heating your office cubicle or bathroom, a limited ceramic heater will provide plenty of heat. For under the desk heat, a low wattage radiant heat panel will keep the lower extremities comfortably lukewarm.
Just as there are different varieties of umbrellas, a couple of different associated with heaters besides. Some patio heaters are suitable for residential use while other people are solely suitable commercial application.