I've always known about the ability to turn on the room-air fan (MANFAN) but have not really used it that much until this week. (I think this is the "coal burning as a hobby" part) What a difference! The house temp increasing by at least 3* just by running it for maybe 45min without using more coal. My stove will be at 425-450* then I turn on the MANFAN and the heat washes off the stove dropping it to about maybe 350*. (This is on a LL Econo I) I also noticed that the temp in my bedroom at the other end of the house gains a few degrees and is a more comfortable 69*.
Mark