WNY wrote:Depends on how much heat is needed to satisfy the thermostat, mine is at Max. 48 and still have a good 1-2" of ash and it cranks out the heat when needed. I don't think I need to tune it up any more. It has more in it if needed, mine is only running 50-70% of max of the stove and seems to keep up nicely. I would probably roast myself if cranked any higher.