Your new model 21 is a non-catalytic wood stove designed to meet the most stringent EPA without the use of a catalytic combustor. Most effectively, this is achieved through the use of secondary air which is mixed with primary air in the unit’s firebox.
For ultimate performance, we suggest the use of hard seasoned natural wood, loading wood length way from front to rear.
NOTE: To produce efficient burn performance, it's best to use hard woods such as oak to reduce creosote which causes chimney clogging.
We discourage burning of trash, painted wood, or anything artificial in your wood stove.