I went to bed it was 75 in the room next to the stove room. Woke up at 6 and it was still 71 and it was cold last night..still cold about 6f right now. I had room for 3 smaller splits when I left for work,,when I got home at 5 it was 69 in the next room..plenty of wood left...cold and breezy all day. Here's the deal. I notice that when having a fire if i turn it up a little the stove will warm up and the t-stat will close..seems fine. But when away for 9 hours the stove will cool some and to me the t-stat does not open enough to bring the heat back up. I know that it did open some cause turning it down I heard it click shut. That's the only area that I can see that could use a little tuning...that and a better air wash..lol. Anyways when I got home I put another 3 splits in..and cranked her up. 1.5 hours raised the temp 5 degrees in the next room..I'm more then happy. I'll be burning down coals on high by 8:30 till maybe 10 ..then the night load. Still can't get over that 740 I seen last night with no flame...that cat did pig out..lol.