An alcohol fireplace is a ventless fireplace, which uses biomass ethanol as a fuel source. You can use many types of such appliances indoors and outdoors. Since they do not require chimneys or gas pipes, these convenient devices can be moved to any place you want. Using an alcohol fireplace indoors or outdoors is as easy as lighting a match. Alcohol fireplace appliances are generally quite safe, but it is also important to use fireplaces and store fuel as directed.