Pellet inserts function similarly to pellet stoves and have many of the same components. They both use the same kinds of fuel and are equally efficient. Installation and venting are the two main areas where pellet inserts and stoves diverge. For anyone looking for a low-cost, highly efficient, environmentally friendly fireplace, pellet stoves are fantastic. Better air quality is provided by the affordable, clean-burning fuel, which is also a renewable energy source. Many models regulate the fuel intake automatically to keep your preferred temperature range.