Occasionally I get some really ugly/smelly smoke when loading the OWB with wet or punky wood, or having to start a fire cold with no coal bed. Most of the time though, I have to look carefully at the stack from the house to make sure it's running. Generally ranges from wisps of smoke to almost nothing.
The best thing to do is make sure your wood is dry and clean. My woodshed has already made a big difference in the smoke output of my OWB since I built it, a month ago. I also try to load it at the top of its' cycle - when the set temp has been reached and the damper is either about to close or has just cloed. That way a full load of wood has anywhere from 4-10 hours, depending on demand, to "bake" and cook off steam. I'd take a wild guess that 60-80% of the moisture left in the wood is gone by the time the fire starts back up again. There have been times at full burn that alll I see are heat waves coming out of the stack - almost no color to the smoke.
My chimney is two sections - about 13' above the ground. Local regulations state that you CAN be closer to a neighbor as long as your stack is above the roofline of THEIR house. I'm glad I don't have close neighbors - I'd need a 90' high stack.
The best thing to do is make sure your wood is dry and clean. My woodshed has already made a big difference in the smoke output of my OWB since I built it, a month ago. I also try to load it at the top of its' cycle - when the set temp has been reached and the damper is either about to close or has just cloed. That way a full load of wood has anywhere from 4-10 hours, depending on demand, to "bake" and cook off steam. I'd take a wild guess that 60-80% of the moisture left in the wood is gone by the time the fire starts back up again. There have been times at full burn that alll I see are heat waves coming out of the stack - almost no color to the smoke.
My chimney is two sections - about 13' above the ground. Local regulations state that you CAN be closer to a neighbor as long as your stack is above the roofline of THEIR house. I'm glad I don't have close neighbors - I'd need a 90' high stack.