Oxford
ArboristSite Operative
The problem is inside, where the hot water goes into the furnace plenum whether there's a call for heat, and then the problem is more or less universal in location, since the laws of physics dictate that less dense things rise. This means the warmer, less dense air around the heat exchanger rises, creating natural convection, which overheats the space. It's not difficult or complicated at all, and is a perfect illustration of why so many OWB installations turn into clusters: people don't bother to think about what they are doing, or about any kind of load calculations, or about wood consumption, or about really anything at all other than Sticking It to the Propane Guy. Welcome to open windows in winter.