If you want an efficient fireplace, I recommend a full insert (sealed-combustion) that runs a new vent pipe, typically up your existing chimney. Hire a professional installer from a local fireplace co ... read more
If an ordinary residential unit won't work for you, then you should consider something such as a Santa Fe, Ultra Aire, or another unit made by Therma-Stor. These are the kind that can be ducted, have ... read more