am finishing up 2 cords of oak and walnut that i started burning in November, prior to that i burned 2 cords of ash and maple rounds from when i started burning end of September. So 4 cords since end of September and am now tapping into my hickory and black locust for the coldest months. had been averaging $40 in heat bills with the heat turned off but mid December it started getting into the teens night AND day, I can't tend to the stove while at work all day so turned up the heat a week or so ago. maybe after the 1st of the year i'll turn the heat back off and see how temps go. this is my first full year of having the woodstove [ Regency] so it's a learning process.