Can I Install A Gas Fireplace On An Interior Wall. As long as you have a natural gas connection or propane availability you can install a gas fireplace almost anywhere in your homeunder a window in either an outside or inside wall at wainscot. You have the option on direct vent fireplaces of venting verticly or horizontaly.
A direct-vent fireplace restricts the fireplaces placement because it requires a venting system adding difficulty to the installation. However inset gas fires go a step further than simply hanging on your wall by sitting inside a wall or chimney cavity meaning they run as flat against your wall as possible. A gas fitter does the gas fireplace installation and it can often be done in one day.
I had an existing fireplace with gas log set and one company I talked to suggested venting out the wall and sealing up the existing chimney.
Another reason for their appeal is their striking and versatile appearance. Inserts are usually cut in various sizes to suit your preferences and needs. Direct vent gas fireplaces can be installed almost anywhere in in a home where natural gas or liquid propane is available. Im not an expert but I think you might just be able to vent out the exterior wall.