Pellet Stove Fireplace Pellet stove fireplaces can be purchased as freestanding models or are installed into existing chimneys that burn wood and give new life to old drafty fireplaces. They operate by using a thermostat to determine the temperature of the room and then feed pellets into the fire at https://www.fireplacesandstove.com/products/comfortbilt-hp22i-pellet-stove-fireplace-insert