Ethanol Fireplaces Ethanol fireplaces don't need chimneys, flues, or gas lines, making them ideal for installation in condos and apartments. Vent-free fireplaces are available in tabletop, wall mounted or freestanding models. They also require minimal maintenance and produce no smoke or the ash. Find out more about ethanol fireplaces. 1. https://fireplace09752.humor-blog.com/29342113/what-to-focus-on-when-the-improvement-of-bio-ethanol-fireplace