I wonder how big a bay will this thing heat? Massachusetts? Green? Hudson? I'm not sure about the 4.4 cu.ft. fire box claim. The fire box tapers to the back like the floor of many masonry fireplaces, so I squared it off with a measurement across, half way back. Looks like 21x21x10...a little over 2.5 sq.ft. Am I missing something? Maybe the 4.4 is without fire brick, heat shield and combustor box...and leaving the load door open. Regardless, I believe it will do a good job of heating my MIL's house. It's 1750 sq.ft. downstairs (don't need to heat upstairs.) No insulation in the walls. The layout isn't the best; The stove room is at one end, in a room with old windows on three sides. I may have to move cool air back to the stove room when Winter sets in but I think in the Fall, it may circulate adequately from the room (two arched 36" doorways.) My MIL has been closing off a few frequently-used rooms and heating them with ceramic electric heat I picked up the stove Saturday (well, me and three other guys.) Stove is four years old, got it for $1000. I think I did OK for once. Welds look good. No warping that I could see, except the heat shield under the combustor. Couple of cracked bricks... Here, you can see the air wash screen in front of the larger holes in back of that channel. This is the primary air, controlled by a slider under the right-side ash lip. This is the "Shot Gun Air" V-channel, half way back in the fire box, controlled by the left-side slider. Combustor and box look to be in good shape. But there's an expanded-metal grid under the combustor (which is warped) and I accidentally put pressure on it when handling the box, which pushed the combustor out of the box and disturbed the interam gasket. I guess I'll just go ahead and wash the combustor in hot 50/50 water/vinegar solution. I've got a roll of interam gasket around here somewhere. We have a Buck dealer here, so that's handy. I'll pick up a new heat shield, expanded-metal cat support, cat box gasket and a few fire bricks. Shouldn't be too expensive... Here is the Heater's new home. The sides of the masonry fire box are square, not tapered in at the back. Hard to see in these pics for some reason, but there's a row of bricks standing on edge behind the row of flat top bricks of the back wall. Behind that is a vertical rear wall of brick. Looks like I'll have to takeout the three top-center flat bricks, then trim the next course even with the bottom edge of the bricks in that course. All in all, not too much work. You can see the bottom of the 8" HD RoundFlex liner that was on the previous insert. It connects to rigid pipe when it gets into the clay liner. It's insulated all the way up and is an internal chimney...21'. I'll remove the top-row bricks, then go after the next course with an angle grinder and concrete wheel, with a fan in a window to blow the dust up the chimney, hopefully.