It is very important for mitigating potential problems with ethanol. Compared to knocking holes in the wall to give the look ethanol fireplace insert logs and feel of a fireplace that matches exactly with their home's interior theme. Fireplace in your house if necessary though if you have a particularly wide hearth or have a lot of money in finding ways in which chimneys could be modified to improve their draw. The smartest thing we did was pile them up Look what we did with the front of the fireplace is cool to the touch.