I’ve burned three tons through my Comfortbilt pellet stove. 1 season. My Auger started whining loudly after about 1 ton. I was able to correct it by cleaning out the hopper with a shop vac and lubricating the bottom of the auger with 3-in-1 Teflon lubricant every so often. The stove is capable of burning a bigger hotter flame than some of the other pellet stoves I’ve seen. So far I am happy with it. The online support and tutorials are extensive and accurate. I believe I will be able to keep this pellet stove running for a very long time the way it is set up. You need to get an ash vacuum with a thin extension hose and clean it out periodically. Also set up your outside vent so that it can be easily accessed for cleaning as well. After about 2 tons I was losing performance, but it was because the vent stack was getting clogged. So far I am pleased with my purchase.