I have read on another forum (hearth.com - excellent resource) that outdoor wood boilers may soon need to meet EPA standards, just a indoor woodburning stoves currently do. This is a good thing - when forced on the wood stove industry it forced great increases in efficiency.
I had a indoor boiler at my other house. It was a nice unit. Kept me nice and warm. It was a pressurized unit. The only thing about it,I could not shut it down enough to control the fire if I filled it up with some small dead wood.
The Boiler Room - Wood Boilers and Furnaces. This Forum is for the topic of Central Heating - specifically with wood, coal, pellets, corn and other solid fuels. We can also discuss multi-fuel systems, which burn oil and gas along with solid fuels.
These indoor wood only boilers are gasifier units. The wood needs to be dry, very dry for a gasifer to work properly. I have a multifuel that burns wood coal and oil and IS NOT a gasifier. There is a HUGE difference between to two. If you are only going to burn wood and no coal at all I would go with a gasifier for sure.
Well since it hasn't been mentioned EFM amkes a indoor wood/coal boiler. Stokerman the guy who represents EFM on the forum here has one and used wood in it mostly. The efm WCB-24 hand fired wood/coal boiler It's a beast:
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