I have a fireplace in the living room that rarely gets used for two reasons. The first reason is lack of efficiency the second reason; my wife doesn't like ashes near the light colored carpet. This kills the thought of getting a wood insert since I would like to use it frequently to heat the house. I don't want to pay to run a gas insert either. I would like a wood burner in the basement (unfinished with 9' ceiling) and would like to know: 1. It is possible to put the wood burner under the existing fireplace, exit the basement and tie back into the existing chimney? Code violations? 2. If possible, what is needed to convert the existing furnace/water heater vent to a chimney? Please excuse my ignorance and thanks for the help.