Overall I am very satisfied with my stove. I am able to comfortably heat two of the floors in my house. I blocked the 3rd floor off with a door and am not heating that, however, I think I could depending on a variety of factors. (outside air temp, how warm I want the other two floors to be, etc.) I am VERY glad I was able to get the upgrade blowers as that I am certain is helping a lot.
I was surprised at the quantity of fly ash the stove produces. I have had to completely shut the stove down two times to take the pipe apart to clean out the ash. The 2nd time ash had accumulated on the fins of the power vent fan to the point that it was starting to wobble a bit. Cleaning the pipes was an inconvenience but nothing more. On the other hand, cleaning the fins on the fan meant working outside as winds/snow howled off Lake Michigan. The wind chill was in the -30 degree range that day but I didn't have a choice due to the wobble. I survived thanks to a bit of whiskey to warm my bones.
I was hoping that the stove would run a bit longer unattended. And I say that from an ash standpoint, not coal. When I am running the stove hard (both burners at 20-25 feed rate) to keep the floors warm I need to empty the ash bin every 24 hours. That's not an inconvenience at all unless I want to leave for a couple days and maintain temperature in the house. If I leave now, I adjust the max feed rate down low enough that ash is not accumulating as quickly. No big deal. It beats a wood stove which would likely need ash to be removed much more often.
There are a few other minor items about the entire setup I would revise if given the opportunity but nothing major. Based on my satisfaction AND the drastic change in environment in my home (much warmer, cheaper to heat) I have had a number of friends interested in the stove to the point that I spoke with the LL guys about becoming a dealer and selling to my friends and the general public. LL has requirements/restrictions that I was not interested in entertaining though so that did not work out.
My neighbor has a house larger than mine and uses a wood fired boiler outside to heat his baseboard system. He HATES me now as my house is warm AND I don't have to walk outside at all hours in Northern Michigan blizzards to feed a fire. And of course, the propane company hates me as well. I went from purchasing upwards of $3000 of propane per month to..... Zero so far this Winter. I don't even turn that system on anymore. I am spending approximately $450 per month in coal. I have a LOT to learn about this stove but am very glad I made the purchase.
Thanks for your interest!