Obviously there are more experts here that can give you a more certain answer but a quick call to a local fireplace dealer would likely also get you the info you need.
Can a gas fireplace be installed on an interior wall.
This type of fireplace can be installed anywhere a chimney can be installed which allows the homeowner to consider installation along an interior wall.
Sure decide if you want a unit with exposed vent pipe or want to build a chase to house the vent pipe then go for it.
Natural draft fireplaces release the flue gases up a chimney because the gases are hot and rise naturally.
In addition to making it possible to put a gas fireplace almost anywhere in the home power venting technology can also be installed to control where the heat is distributed inside or outside your home.
You have the option on direct vent fireplaces of venting verticly or horizontaly.
As long as you have a natural gas connection or propane availability you can install a gas fireplace almost anywhere in your home under a window in either an outside or inside wall at wainscot.
The materials for the wood framing drywall and stucco coating cost an additional 175.
Shure a direct vent fireplace can be on any wall.
For 650 more our fireplace dealer would have installed the fireplace not including the gas and electric hookups or any interior finishing.
We ended up not doing it that way due to an odd configuration of the wall but it would be something to talk to someone about.