Hello all. I live in Southcentral Alaska, at about 12,000 heating degree days. I heat a 1500 sq ft., well insulated 2 story home on 3 cords of birch a year. I've been using a Dutch West branded Century FW300006 75,000 BTU for the last 10 years and while it does the job, it burns so hot that the only time I keep a fire going throughout the day is when it's at least -20 out. So most days I light a fire in the morning and one in the evening. I would love to be able to turn the fire down to a simmer and also have the power to heat my home if it does decide to get real cold. Been looking over a bunch of different stoves over the years to replace my adequate burner. I have been focusing more on catalytic stoves and have a few questions. Seems the Blaze King/King is the ultimate long time burner - but the stove is rather not what I'd like to look at on a daily basis. After Blaze King then all the others fall way short in burn times, but 16 hours is better than the 6 hours I get on my EPA certified air tight stove. The Woodstock Stoves are real nice to look at but i have one concern that i cannot find a reference to and that's if these Woodstock stoves need to be rebuilt every so often, to keep them airtight, as other caste iron stoves require? I'm not inept or incapable of performing such tasks, but I would rather not have to worry about such things. Any suggestions would be appreciated.