back in 2004 I removed a gas log fireplace and inserted a St. Croix pellet stove in its place. It was on a thermostat and heated the entire house very well. A bag of pellets was $5 for 40 lbs and I would buy a pallet at a time, usually 2 tons per winter at a cost of around $500. That was in my last house, now I have a gas log that is very efficient, and I put a thermostat on it and it heats my entire house. Bedrooms are a little cooler than the main living area which is fine.