Hearing about the ventless fireplace that burns with no smoke, smell or ash probably makes you think that it is too good to be true. It is real fire at the end of the day, so how is it possible? How come the fireplace doesn’t require chimney or additional ventilation? You can find the answers to all these questions below.

Ethanol burning process

Ethanol fireplaces run on bio fuel based on ethanol, which is of plant origin mainly obtained from crops like grains as well as potatoes or sugarcane. Because all these products are biological, the combustion of ethanol is complete and clean, which means that there is no smoke, smell or ash being produced during the burning. The only by-products are heat, water vapor and CO2 in very small amounts comparable to human breath. Considering that, we can say that ethanol fuel has a neutral impact on the environment and is a renewable source of energy. The small amount of CO2 produced during the burning process is absorbed by plants, which can be later used to produce the fuel.

Because there is no smoke or harmful substance emitted during the burning of fuel, ethanol fireplaces don’t require chimney or additional ventilation. The only thing, about which you need to remember is to make sure that you still get ventilation by cracking a window in the space the fireplace is installed. Just like candles, the flames of a bio fireplace consume some oxygen, so it is good to occasionally let some fresh air into the room.