bigchunk wrote:now that i think about it. the baro was set to a wood fire the baro always opened for the wood fire . now ive been burning coal all winter and it was never set to the coal fire. thats what im starting to believe. wow what if ive been not getting all the potential out of my stove!! scary. wow.
A Baro is not going to "add" any efficience to your stove. If you are primarily burning coal, it probably won't open unless you get a really strong draft, and it needs "extra" air to exhaust stack.
All it will do is keep the sudden change in draft (remember, draft is not a static number. It changes due to wind, relative temperatures, fuel, etc), from sucking _through_ the stove.
In cases of exceptional draft, it might allow the stack the amount of air it want's, but let you run the stove at a cooler temperature because it's not sucking the air through the fire.
It's the same idea as a manual damper, kinda, except a manual restricts the draft, and the baro gives it all it wants, but they both keep it from pulling demand-air through the stove at a sudden, higher rate.
With a coal fire, it's probably not as much of a big deal, unless it's a _really_ windy day, but it can play havoc with a wood fire, and in some cases, suck embers or flame into the pipes.. and that can hand you a nice fat chimney fire in short order.