Thanx Phil.
I am not a welder by trade, but have done quite a bit for myself, and can weld in all forms including gas, mig and tig. I find it saves quite a bit of money when you can do it yourself.
This stove only smokes when you first light it off, and for only until you kick in the air supply. Then, you have to stare at the chimney output to see the heat wave. Thats about the only tell-tale you have that it's running at all.
rj