On it's second year in a partially finished basement, ranch with a walkout. The basement alone is 1550 sq ft, keepin it 70-80 on most days. Last night we hit a low of -9 at the homestead north of Cheyenne. I think the stove did well, woke up at 4am and it was 63 upstairs and 70 down in the basement. I was on 5 and 9 setting, usually run her on 3 and 9. Waiting for the Air Flow Breeze to come in the mail and I'd bet with those extreme lows it will help out. Thinking about putting above the stove in the ceiling to pump some of the warmer air in to the upstairs. Hope it's not this cold where you are!
EW
EW