We use a oil filled radiant heater from wally world. I picked it up when I spent the winter in Maine one year and have used it for the last four years. It has three settings, 600watt/900watt/1500watt. It is radiant so there is no fan to pull more electric. It works to well in the bedroom of the 3650rk helps very much in the main living area to conserve gas. We have been very happy with it so far.
