Outdoor wood boilers have become a popular option in the cold country for heating the home. The advantage is that you keep all the smoke, mess, and fire danger outside and away from the house. I’m considering modifying this plan to burn wood gas from a DIY gasifier instead of just plain old wood. I’ll be sure to post the results of my project after it gets underway. We have recently purchased a home and I will be installing an outdoor wood furnace (which I will build) and have been researching the current market. I must say I am appalled at the lack of progress in outdoor wood furnace design. Almost all of the furnaces on the market four years ago were very inefficient (in spite of their claims) and very smoky. I’m not sure why, but I’ve decided to document the construction of my forced air outdoor woodburning stove. I got an old worn out forced air wood furnace many years ago and used it for a few years until the sheet metal was so thin and had been patched so many times I had to retire it.
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This outside air is important as all the air that a stove burns and that goes up the chimney has to come from some where. With a normal wood burning stove all that combustion air comes in from the outside around your doors, windows, and any other leaks to the outside of the house. As you said, check Consumer Reports, etc. I personally have built 4 outdoor wood stoves, with the oldest being 7 years. Theses stoves are all simple to build and work quite well. You must remember that up here in Canada, we usually get a lot colder than most of the US. There is NO DOUBT that the wood boilers out there are MUCH more efficient than a forced air stove. But again, I have a FRACTION of money invested in this. Most of the parts to build the framing were scavenged from our farm.
Outdoor Wood Stove: Furnaces & Heating Systems
I used to have a wood stove in the existing shop that worked really well but I sold it a week ago. I figured that I’m going to need a bigger wood furnace and I called the mechanical inspector to find out what the code is just to find out that they dont allow a wood stove in a shop where oxygen and acytelene are stored because you never know when a spark might cause the oxygen cylinder to blow up. The temputure is about 30 degrees F. outside and the building is at 65 degrees. The forced air wood furnace is heating the new portion that is 40′ x 80′ with 18′ ceiling and my original building that is 38′ x 40′ with a 16′ ceiling and I have the furnace in the old section turned down to 55 degrees so its not comming on. Manufacturer of the Hoss Outside Wood Furnace, the best built, longest lasting wood boiler on the market. The WoodMaster 3300 wood furnace, plumbed with a single heating loop, is an economical choice when there is no need for multiple hook-ups. The 3300 furnace comfortably heats an average sized building and its hot water. Download Brochure.