Was over at a buddies house today. Very large (3200sqft) open A frame with 20' ceilings. It was 65 degrees inside when we got there. He decided to light a fire in the Sierra 8000 to take the chill off. After only a half hour the temp was rising nicely. What amazed me was how the stove at only 500 degrees ( felt practically cold to me compared to the Elm) was able to warm the house so quickly. I've got a feeling when I start heating drywall instead of concrete I will experience something totally different with wood heat. Stove didn't appear to be putting off much heat but the room was really responding well. No wonder you guys with small stoves in rooms with 8 or 9 foot ceilings talk about temps in the 70s and 80s.