Only had my stove about a week-bought a couple of bags of pellets the local Tractor Supply had in stock when we bought the stove (Piney Woods). Burned through about a bag of those, not impressed at all with the stove's heat. Made a short road trip and found some Rocky Mountain pellets, emptied the hopper and poured in the Rockies.....wow, what a difference! Gained 30 degrees F at the room fan outlet with the exact same settings-I've read on here about the brands being different, but I didn't think it'd be this drastic. Love this place--lots of good info.