Pellets: Pellets are an eco-friendly, renewable energy source. Pellets are made from sawdust and small fraction of wood chips under high pressure without the addition of chemical binders. Fuel briquettes: They are made of sawdust, which do not contain any harmful impurities and substances. The use is absolutely safe and environmentally friendly. They do not contain substances in their composition that could negatively affect health. When gorenje do not spark and leave behind a minimum of ash. The density is twice the density of ordinary firewood.