Outdoor Wood Boiler Air Quality

Some problems with outdoor wood boilers.

When you see smoke pouring out of an outdoor wood boiler, this is a signal of incomplete combustion.

Another problem is the intermittent heat demand that occurs with use of the furnaces. When demand is low the wood will smolder, which then builds up creosote. Once the demand rises and intensity increases the creosote is burned off in the form of black soot into the air.

The furnaces being stand alone units means the stack is quite low to the ground, thus the smoke and soot can drift more easily into occupied spaces.