Pellet Stoves Inserts - Convert Your Drafty Fireplace Into an Efficient Heating Source Pellet stoves can be placed in your existing fireplace or as a standalone heating source. They can be highly efficient and use compressed pellets made from wood byproducts such as sawdust. They are also "green" as they https://www.fireplacesandstove.com/products/castle-serenity-12327-wood-pellet-stove-with-control