How often do you reload your f55 then? Climate? House size and age? Thanks!
I live in Maine. It gets cold. The house is only a few years old and is very insulated so it almost doesn't matter what the outside temp is.
The house is a ranch. 1400 sq ft. Half of the basement is a two-bay under garage. There's an attached garage on the other side. The stove is in the center of the basement. 2x8 walls and good windows. The garages stay above freezing just from the heat bleed-through on the walls.
I don't typically run the stove at night. I get up in the morning and the house is around 55F if it's real cold. I head down and stuff the cold stove full of hardwood.
1). It takes about 45 min to get up to temp.
2). Next it runs 3 hours or so at 500-600F.
3). Then it ramps down to about 400F and stays there about 3 hours. I usually open the primary air a little and back off the damper.
4). I rake the coals forward and open the primary air more. Leave it for an hour. Now it's at 300F with some coals. Upstairs the house is around 67F.
5). I reload with 3 or 4 splits and run the cycle again. House is at 70F upstairs until evening and slowly drops off.
If I burn more at this point it will get too warm in the house, just in time for bed and I like to sleep cold.
It gets nice and toasty in the basement. The foundation is entirely insulated on the outside with two layers of foam board. As a result, the concrete ends up being a large thermal mass. Once everything is up to temp in the basement, it takes a while to bring it back down again.
Of note, the house is so tight that I have an air exchange system. I have it on a timer so it runs in the middle of the day and cycles some fresh air in and some house air out. As a result, I lose some heat during that time.