We LOVE ours. It's in the living room fireplace, and due to the design of our house the heat is able to circulate through the entire first floor. Second floor stays cool... but we prefer it like that. I had thought that running it mid winter would help lower the gas bill, but it did not. The cost of that many pellets and the gas easily exceeded the cost of just running the natural gas furnace. It is much more economical for us to just use it in between seasons and occasionally for a little extra warmth or ambiance in the living room.