The problem with these outdoor boilers is SMOKE! First of all they typically have a very short smoke stack on them which doesn’t do a great job getting the smoke up and away from surround structures. Secondly these units create more smoke than normal because of house the firebox is constructed. The firebox is completely surrounded with a water jacket, hence being a boiler. It’s a very effective way to transfer the heat to the water which in turn heats your home. However, it makes it very difficult if not impossible for complete combustion, hence the nasty smoke. Complete combustion of wood occurs at temperatures above 1000 degrees F, however, the surface of the firebox can’t get that hot when it has 150 degree water on the other side.
Recently the State of New Hampshire passed laws governing the placement and use of outdoor wood-fired boilers. You can read more about recent changes to the NH laws with this outdoor wood-fired boiler fact sheet. The following are the new requirements in New Hampshire.
Ultimately the new laws have been implemented to try and protect the health and value of neihboring properties. However, even with these new requirements it’s very likely that outdoor wood boilers will cause strife between neighbors. If you’re thinking about installing one of these energy effecient boilers then I highly recommend you discuss it with your neighbors. Taking a proactive stance with such a significant decision you’re likely to earn some respect from your neighbors and prevent some expensive legal battles.
Do you have an outdoor boiler or a neighbor with one? What are your thoughts?
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