In response to judykitten1971; obviously does  not own a SUNHEAT Heater, if she did she would find the increase in electricity to be as claimed. The heater does not draw maximum power all the time. It is only on the start-up, after that the consumption goes way down, since the 1 and 1/2 lbs of copper (most copper of any other brand) retains the heats while only the fan continues to draw minimal power to produce the heat. These units are controlled by a thermostat, so like other heat sources they are not always on. Think about how much it would cost for an oil furnace to run 24 hours a day. It just doesn't happen people and the SUNHEAT Heaters are no different. In fact these electronic zone heating systems cost less than a Mr. Coffee a day. I urge anyone to compare the SUNHEAT to any other model on the market today and you will find the clear winner is SUNHEAT. The heaters are the only one available that are user servicable too, and are they backed by a 3 year bumper to bumper warranty. It's the best bang for your buck and it will keep you warm and cozy all winter long. You will see a big savings on your main heating source, whether it's propane, natural gas, or oil.