We have an old house built in 1900. It does have central heat and air, but is very expensive to heat in the winter. I want to get a wood stove to help heat and reduce the heating bill. Is it safe to buy a used wood stove on Craigslist? I really want some kind of cast iron, with blower and windows to see the fire. Is that even possible? How do I know that the wood stove is not a safety hazard? I don't want it to vent out the ceiling, I want it to vent out the wall. It this possible and what am I looking for? Is it possible to install it ourself?