A friend of mine has a home in Connecticut that has a smokeless fireplace in the livingroom. He does not have a propane grill or anything in it... It's just a stone-backed opening with some candles on the floor. I thought this was so creative and I wanted to do something similar for my condo (I have a wall to put it on, I'm just infringing on some dead space under the stairs). Any thoughts on how much something like this could cost to install? Does anyone have one?