I recently purchased a house and there was a pellet stove in the basement with a 4" pipe going out the wall up a chimney. I would like to put a wood stove in it's place but I also want to tear the chimney down and put my pipe for the new stove out the roof. Is it possible to put a pipe through the floor of the upper level and vent out the ceiling or do I need to leave the chimney and vent there?