I had an old Cemi II hazard wood stove in my masonry fireplace and have decided the risk isn't worth it (I can't see flames inside it anyway, and that was the whole point). I am planning to remove the wood stove, clean the firebox, clean the flue, and install a top damper. The fireplace is in the lower level of my bi-level home and the whole area tends to be drafty and cold most of the year. Does anyone have any thoughts regarding installing an outside air kit through the back of the firebox? Is it just a dumb waste of time, an unecessary hazard, or perhaps actually useful? We have the tools; we can cut a hole through brick and install the thing.