Pellet fireplace inserts are among the cleanest-burning home heating appliances. The sealed combustion boxes vent through your existing masonry chimney.
Pellet stoves need electricity versus a wood-burning or gas fireplace insert. Instead of loading logs, you pour in pellets to fuel the fire. Pellet fireplace inserts can heat up to 2,500 square feet. The average household burns about a bag of pellets a day for a 1,500 square foot living space (at an average of $4 to $10 per 40-pound bag of pellets).