I recently installed an Alderlea T6 stove. It just seems like I'm not getting alot of heat out of the stove. My biggest factors against the stove is a wall with approxiamately 190 square feet of windows and doors on the north side, which is right behind the stove. I did a load calc on that and with double paned windows there is a total heating load of around 20,000 BTUs. So according to PE and the actual BTU/hr for a T6, it's pretty much a wash between the stove and the heat loss from the windows. I also have 19 foot vaulted ceilings. There is a big ceiling fan to move some air. The house furnace fan is circulating all the time, so that is yet another major factor against me. They also seem to not have very long burn times, maybe 3-4 hours with the air on low. The biggest misconception is the stove is advertised as 99,000 BTU's and the whole 3,000 square feet advertisement they thought would meet their needs. Another problem is they previously had a Fisher stove and clarifying between an older stove to an Alderlea is a very gray area. My last resort is installing a chimney damper thinking I am loosing some amount of heat up the chimney with it being so tall. I also am going to have them shut off the fan to the furnace so I'm not competing with trying to heat the entire house. We also installed a fresh air vent with it being a new house, so I think I might plug that up also. Does anyone have any opinions on this situation?