Outdoor Boilers………..think about that for a few moments…………let it sink in. Outdoor boilers are almost an oxymoron when you really think about it. You are taking the very expensive boiler and pumps that you’re using to heat your home, or shop……..and sticking it outside in the coldest possible place. Does that really make that much sense? Yeah ok, get the wood and bugs out of the house, I’m all for that, no problem, but I ask you what about the wood you are going to put in your nice new shiny wood outdoor boiler? Are you planning on dumping it on the ground out in the middle of the yard and dig your wood out of the rain snow and mud and use that to feed your boiler. If so, you’ll be sadly disappointed. Wet, green wood does not burn well. Furthermore it stinks and more than half the BTUs are consumed drying out the wood so it can burn. Even with the “most efficient boiler”, your efficiency will still would drop by half and the chimney will plug up with creosote and become a fire hazard.