Well, I got the new pellet stove in and running. It came wednesday around 3:30pm and my brother and I had it all installed and running by 9:00pm. Kind of took our time because its the first pellet stove we've ever installed and we didn't want to make any mistakes. It worked really good the first night and Thanksgiving Day. Outside Temp was high 30's low 40's. Thankgiving night got down to around 20 here, but the stove managed to keep the living room around 78, down the hall was about 68. Friday was high 20's low 30's. Friday night I noticed alot of fly ash (i assume you call it that) on the fake log and around the outside of the burn pot so I shut the stove down and waited for it to cool down and vacuumed it all out and cleaned the heat exchanger tubes. There was alot of build up in the bottom of the burn pot so I cleaned that out also. I pulled the cap off the bottom of the T in the exhaust vent at the back of the stove and cleaned some more fly ash out of that too. Checked the ash pan, wasn't even a quarter of the way full. This was after 5 bags of premium hardwood pellets, that claim low ash content (Empire pellet, Associated Harvest Co. Lafargeville, N.Y.). My vent pipe (3") comes from the back of the stove into a T and goes up 36" to a 90 degree elbow then to a 3" to 4" adaptor then to a 4" to 6" adaptor then to my 6" metalbestos T out through the wall and there is 16' of 6" metalbestos above that. I had a wood stove that I replaced with this pellet stove and the metalbestos was already there( I installed it 2 years ago) that is why I just adapted the vent pipe into it. The dealer had the display stove vent setup the same way in the store. Also my house is just shy of 1800 square foot, 2 story with no insulation on the second story. Stairway is closed off by a door with a heavy blanket behind it. Lower level ceilings have drop ceilings. I know I have alot of heat loss. I expect that till I get the second story back together. Maybe this is normal but my concern is not about the heat output but of the excessive amount of fly ash. Is this normal? After cleaning it last night and running it all night on high setting I checked again this morning and it doesn't even look like I cleaned it at all. There is alot of ash again after 1 and a half bags of pellets. Could it be the pellets, my exhaust vent, the stove? Flame looks good. Stove is rated for 50,000 btu. I did sweep the metalbestos before installing the pellet stove so it was good and clean. Sorry to be long winded but the pellet thing is new to me. Thanks, Jarrod