any one every build a out door wood furnace ?????

Iowa Ron · Sep 20, 2008

looking for ideas and tips thanks

MapleStone · Sep 20, 2008

My Uncle did. He started with an industrial tank and built a fire box in the bottom and a stainless steel water tank and heat exchanger. His is huge, too big actually. The tank was about 7' round so the fire box is huge. The one problem he had was due to the fire box being so big he could over heat the tank and it would boil over and potentially boil dry.

Dale(MO) · Sep 20, 2008

Ron,
I've got one in my yard right now, and I've built 3 others over the years. I've helped out with 5 or 6 others, also. It's not what I would call extremely simple, but not that bad an undertaking.

I prefer a round firebox, I think they do a better job. You also don't have any square corners to fool with, which is where you will have leaks, usually. Mine is a 26"X26" long firebox inside a 36" pipe 36" long. This gives me 90 gallons of boiler capacity. With both firebox and boiler round, you have less welding, and less gusseting to do - but can be a little harder to keep square.

Everyone has their own opinions on how to build one, little tricks, innovations, etc., so I won't get into that. Every stove I've been involved with was a little different in design. In that respect, to each his own.

Whatever you do, if you go with a boiler, you MUST install a pressure relief valve (30#), and I also install an air/steam valve - both in the top of the boiler. Safety first.

Sorry for being so long-winded.

Hope this helps,
Dale(MO)

JH · Sep 20, 2008

I have been studing about how to build one them hot air stoves to duct the air into our place what is a good size fire box to start with any ideas would be helpful

any one every build a out door wood furnace ?????

Iowa Ron

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MapleStone

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Dale(MO)

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JH

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