Outdoor wood boiler

If firewood is readily available, and you are already equipped to cut/haul/process said firewood then it should be a no-brainer in my opinion. Dont cheap out on the boiler, as above, stainless is a good choice.

a hot fire is the best for longevity, an idle fire produces acidic compounds as well as creosote. When i was in search of some pellet feeder parts i made contact with a very knowledgable fellow, his best advice was run burner hot enough to prevent condensation in the chimney/heat exchanger. i run pellet stove in shop,and in house.300 feet between buildings makes a boiler impractical.