Ethanol Fireplaces Ethanol fireplaces don't need chimneys, flues or gas lines, making them easy to install in condos and apartments. These fireplaces that are vent-free are available in freestanding or wall-mounted models. They also don't produce smoke or ash, and require minimal maintenance. Find out more about ethanol fireplaces. 1. https://fireplaces65431.blazingblog.com/30097627/the-top-5-reasons-people-win-within-the-bio-ethanol-fireplace-industry