Wanted to point out. If you are using a fire starter and kindling. You can close your air some while the fire starter and the small kindling are burning. As they will burn just fine at lower input air air settings. The result is your stove will heat up quicker. Less heat flushed up the flue. Time and experience you will learn how much you can close the air on your fire starter and kindling to get the quickest heatup of the stove.