I am considering installing a Freestanding woodstove or ask about other options. I have two chimneys. The house was built around 1920 and both are the old shallow coal burning type fireboxes so i am not comfortable burning anything in them now. I have lived in the house for 20 yrs. and never used either. One is in the living room and I am not really considering using.The other is a double firebox single chimney. The den side is original and has a flue hole cut thru the brick and there has previously been a stove there at one time(apparently without floor protection because there are some burn marks in the floor. The other backs up to the bedroom and has been sealed off completely with concrete or morter. I do not know why but assume it is because I also have gas heat and the flue is vented up thru that same chimney. What are my options??? Your suggestions and exprerience would be greatly appreciated.