Pellet Stove Fireplace Pellet stove fireplaces are available as freestanding models, or they can be placed in existing chimneys that burn wood to give new life to old fireplaces that are drafty. They work by using a thermostat to gauge the room temperature and feed pellets into the fireplace at https://www.fireplacesandstove.com/products/comfortbilt-hp22-n-black-pellet-stove-with-smart-controller