24 to 40 hours during typical winter days, augmented with a few of the seasoned, small "cook wood" splits on the left. Part of it is the house not being very well insulated, much of it is the cheap but inefficient boxwood stove. Burns anything, just a lot of it. One day they'll be a Jotul F118 with a glass door there...should cut my wood usage in half going to an EPA stove. Some point in the not too distant future I need to strip and re-shingle, and I'm planning while I'm at that to open a big hole into the attic so I can go in with a haz mat suit and clean out all the mouse [email protected]#$, check all the electrical wiring, fix any wood that looks questionable, and put down new/more insulation, then we'll seal up that last 4x8 section of roof and finish shingling over it . It'll be interesting to see what the insulation does to my wood consumption then.