Okay, I've had my pellet insert three years now, and decided to run a OAK up the chimney. It's been drawing air from the room since it's was installed, but I'm tired of the draft in the house. The stove has a two inch inlet for air. What is allowed material to use. It has to go 15-20 feet. Should I increase it to a three inch? After all, it's only drawing outside air. Anyone have any thoughts?
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