I think stove are different also depending on fan draft . Mine only smokes for about 30 mins at start then all heatwaves after that . There's a lot of different ways to burn outdoor boiler . Some boilers don't even have draft fans . Some don't have water cooled doors. So there are a lot variables going on . I'm down to 15-20% moiture here. The big deal is how much water your heating I seen some 200-300 gallons .. Heatmors are on low side 125-155 gallons . It's the keep heat in wood theory. So just stove brand and year can be total different how they burn . Sent from my LGL84VL using Tapatalk