Yup, and that's one of the great things about them. Pellet stoves are popular in restaurants, diners, and coffee shops, too, for this reason. Fuel and gas fires can be hazardous indoors, but pellet stoves are made for outdoor and indoor use. Circulation is the secret to why pellet stoves can burn safely for hours. As long as there is enough ventilation, pellet stoves are fine for indoor use.