I'll PM you, Mike, re: grad school- you'll get a kick out of it! Seriously, the next time we run for 24 hours straight for a few days, I will pay attention to how many times we feed the stove. We don't let it burn down to an empty hopper every time, or even down to where it will take a full bag every time. We fill the hopper every day during burn season, and most often we have a partial bag left over- but we don't necessarily fill it at the same time every day. In other words, I have been less than scientific about it. We haven't yet burned a ton this season, but we are coming up on it. I'd estimate that we have burned about 40 bags of pellets since the end of October. Husband concurs. That's just about right- we haven't hit the coldest part of winter, and we typically burn about 2 tons a season if it's cold.