We are planning to install a pellet stove to help offset our heating oil consumption. We use about 700 gallons of oil/year, including heat & hot water. Our house is a 1250 sq ft ranch (7 years old), with the living room/kitchen/dining room being one open room with cathedral ceilings, bedrooms are at the other end of the hall. We have 2 heat zones on this floor - 1 for the great room, 1 for the bedrooms. We are considering the Harman Accentra, Advance or XXV. Some questions I have are: What is the difference between the cast iron stoves and the steel stoves? Is one material or the other better for heat production, efficiency, stove longevity, maintenance, etc.? How many BTUs do we need? The Accentra is the smallest of these stoves with 40,000 BTU & supposedly will heat 1,400 sq ft, the other 2 stoves have a higher BTU/sq ft heat rating. Are we better to get a stove with a higher BTU rating? Will that burn more efficiently to heat our size house? Will the cathedral ceilings hurt us due to heat rising? We do have a ceiling fan that could be put into use if this will make a difference. Will the heat spread out to the bedrooms at the end of the hall, or will we need to use the furnace to heat those rooms? I'm planning to set both thermostats at a lower temperature just in case the stove doesn't cover it (ex. set the thermostats at 60, but want tthe rooms about 64-65 during the day, 68-70 evenings, back to 64-65 overnight). What am I looking for when buying pellets? Low ash content, hardwood vs softwood, etc.? Anything else we need to consider? We have a spare lined chimney flue waiting to be used (never used). We had a 6" stove opening put into the brick wall hearth in the living room (end wall of the house), but need a floor pad for the stove. All suggestions/comments are appreciated.