I heat with a natural gas (methane) furnace, but have been turning the thermostat down to 60F and closing all the vents except for the room I'm in and supplementing that with a 1500w, oscillating, ceramic heater. Living alone makes this more reasonable than for a family. Actually I've found it to give me 'about' a 25%+ savings. My combined $$$ spent have certainly been considerably lower the past couple years but it is hard to get very accurate without inside/outside temperature differentials for the season.

My daughter also heats with natural gas but they supplement with a free standing soap stone wood burner piped into the fireplace that does an impressive job. Much more practical for a family with two small kids. Sonoutlaw has a supply of wood that only costs MUCH labor that he willing invests throughout the year.

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