I do not use any other form of heat. We have our heating system set as a back up in the event the stove runs out of pellets or stops for any reason. A little under 2400 sqft, 1200 per floor.

I have a similarly sized house and second this down to the usage. Last year we did end up buying a few loose bags to get us through the end of the season. We purchased our pellet stove and the company that sold it installed it. It was 2 yrs ago and very reasonable. We have it serviced yearly, $150‐$200, but it's fairly easy to maintain in between.