Energy Content: The level of energy saved inside a device mass of pellets, generally expressed in kWh/kg or BTU/lb. Nominal Maintenance: Pellet stoves need much less cleaning than conventional Wooden-burning stoves, due to their automatic ash removing methods. Set up costs for pellet stoves are sometimes decrease than for Wooden-burning https://woodbrezany.com/en/pellet-vs-gas-heating-cost-comparison/