Same with mine, I just looked at my hydro bill for this year/ last year and it is up by just over $10.00 for the same period and last year I had a propane furnace. So far I am really impressed and saving a lot of money. I am also finding I don't need to keep playing with my thermostat like I did with the propane furnace. So $10.00 in hydro versus whatever it would have cost me in propane for a month. Clean, quiet, comfortable, so far so good.