Pellet Stoves Inserts - Convert Your Drafty Fireplace Into an Efficient Heating Source Pellet stoves are either freestanding heat sources or fireplace inserts that install in your existing fireplace. They burn compressed pellets made from wood byproducts like sawdust and can be extremely efficient. They are also considered "green" because https://stoveuk54208.blogs100.com/30920903/10-places-that-you-can-find-best-rated-pellet-stoves