(lots of outdoor wood furnace vendors on the 'net - very little "overview" type information, it seems)
Do all outdoor wood furnaces use an unsealed system for water circulation, or are some of them sealed loops these days?
cheers
Jules
(lots of outdoor wood furnace vendors on the 'net - very little "overview" type information, it seems)
Do all outdoor wood furnaces use an unsealed system for water circulation, or are some of them sealed loops these days?
cheers
Jules
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