Ethanol Fireplaces Ethanol fireplaces don't need chimneys, flues, or gas lines, which makes them easy to install in apartments and condos. These vent-free fireplaces are available in freestanding or wall-mounted models. They also require very little maintenance and don't produce any smoke or ash. Learn more about ethanol fireplaces. 1. https://fireplacesandstoves00987.bleepblogs.com/30717904/why-nobody-cares-about-bio-ethanol-fireplace