Well I broke down and replaced an old kindlewood insert with a new buck 91, good news it holds a fire for 6 or 7 hrs, bad news it still won't come close to heating my 2300 sq ft ,10 ft ceiling insulated with new windows farmhouse. Despite what people have said my old wonderwood in the other room feels like its throwing more heat. Its a slammer install and plan on putting in liner before next burning season. Idk if that will help a lot or a little, my wood has been anywhere between 15 and some over 30%. Is it really true a stove like this will heat an entire house of my size to over 65? If I shut air down to try and get over 8 hr burns, just feels like standing in front of an electric heater with cat temp about 800. It has to be above 40 degrees for this stove to keep up.