When I first started looking for a stove, I kept asking how much stove I would need and whether a particular stove would be enough. I’ve seen variants of that question asked a number of times here. So, maybe we all can answer some of those questions for the record and build a reference for others? To help others... — What’s your stove model? — How big is your house? How well insulated? — How bad was the vortex for you? — How’d your stove perform? What did you have to do differently? Me: —Progress Hybrid —1800 sq ft, two story, open floor plan with 2x4 walls and r60 in the attic. Fairly tight reflecting 1990s construction. —Temps between -20 and -5 every night with “BIG” wind (40mph gusts common.) Highs were typically low single digits. —I was able to keep the house reasonably warm. 71-73 degrees in the stove room as normal. Morning temps after the burn peaked, dropped to 60-62. I ran the stove a little more open than usual with three full fire boxes per day, Usually, (when the temps run from 10-30 degrees) I’ll run two loads per day that aren’t packed quite as full with a ‘set it and forget it’ mentality. My only issue was burning off coals that wanted to accumulate. When the stove temps dropped to 350-400, I’d open up the air to burn off the coals. This would add maybe 50-100 degrees to the stove top temp for a while before reloading. Because of the amount of coaling, even with the coal burn-down, my wood additions were roughly the same as a normal load, even though I filled the firebox as much as possible. All said, I probably increased my wood consumption by 50%.I felt like there was still room for the weather to get worse before I would have needed to think about using the propane furnace. Of note, when we had the last bad Polar Vortex I saw -35ish with highs around -10, when the house was kept as warm or warmer with less work. The winds this time really made a difference. ————— As an afterthought... I’ve known, but haven’t formalized this in my mind until now. My PH works best on days that run between maybe 0 and 25 degrees. The house stays really warm, but never too warm, and I can load with enough wood that I always have enough wood/heat to avoid the annoyance of a cold start. If I run the stove for easy starts above 30 degrees, the house can get too warm, and if I tone it down, cold starts can be the norm.