Well Sean, your right I am trying to tweak it as far as it can go, further than any one has, I think. (and maybe too far but nothing ventured is nothing gained) Yes I know my old church is a pain to heat too. It goes back to budget on everything of which i have none. That's why I need every bit of heat I can get into the battery and room. Your insights are appreciated negative or not. This is all new to me and I had to fly blind, we are very low income, I have a sizer condition and haven't been able to work in three years outside of the home. So I had no money to buy any plans or videos or supplies. I have had to do this with the free information on my own researching what I could find and from teaching myself. So there are a tremendous amount of gaps in my knowledge. I'm trying to make up for with experimentation. Now Just for a need for clarification. The forced air system I built is threw the bench only, I have a slow draw of air from inside the room, the intake vents are pulling heat into the air in the air duct from the outside of the barrel, to circulate the air threw the heat battery ( in theory) heating up the clean air as it moves threw, then out into the room. That part of my design will only work once I can get the bench to heat up. I have not put any fans inline with my exhaust so it has no effect on draw. I can if I can get another one. All the draw I was getting was from my heat riser and that part was working. My area of expertise is in electronics so my home power system I have made so electricity to me is free. The thing is, the amount of waist in an electrical heating system and the wear on the system using heaters on it are tremendous so this was my alternative. (you can blow inverters like crazy and the overpowering required to protect them makes the ones that will work unaffordable for me.) I could put a fan inline with the exhaust, I suppose, on the side by the chimney pushing out but I want to see if I can get it to work with out one. In fact I thought it was. We will see. I finally got rid of this fever after two months now its below zero outside and by extrapolation in my home. I just don't get it, the planets warming up and in my little neck of the woods its colder this year than in a long time. I figure the goddess is testing my resolve..lol.. anyway thank you again, Sean all information I get is more than I have so it's good.