What you need to know about Catalytic Combustors
Your wood stove or fireplace will need a bypass damper in order to use a catalytic combustor. (When the exhaust temperature isn't high enough for a combustor to "light-off" the wood-smoke, the exhaust must have an alternate route to go until the combustor is hot enough to perform its function.)
Will I Need A Gasket For My Catalytic Combustor?
Combustors that have no stainless steel "can" must always be installed with a new expanding gasket. Uncanned combustors are manufactured with a CatGard (an expanding gasket that is wrapped around the combustor) at no extra charge. The factory ships the correct gasket already in place, with masking tape to hold the gasket in the proper position during installation.
Federal law requires any EPA-certified catalytic wood stoves be operated with combustors to reduce air pollution over the entire life of the stove.