A SECRET WEAPON FOR BLEND WOOD PELLETS FOR VERSATILE USE

I just uncovered about the double wall pipe yesterday. It is smart. Keeps the gases very hot to allow them to escape instead of condense because of enormous temp diff in between pipe and place?I assume its just a little increased then I thought a quick plug in of quantities on this chart places it at about $250 for 6.5c kw/hr. All people tilts figu