I have a Lopi "Freedom Bay" fireplace insert. It's been good and I clean the blower fins and lub the bearings. Here in North Central Texas, West of Ft. Worth, the coldest temps of this Winter's roller coaster temps have been in the lower 20's and mid teens when strong Northers hit. There comes a time, as I burn with 2yr. seasoned Red Oak and some Mesquite, that the max 180 cfm of the blower air doesn't seem to be enough to keep a late 1950's ranch style home comfortable when in the teens and we've been gone for a several hours. With two splits on a bed of coals, with the door closed and dampered, my temp gauge shows 300* on the insert's steel face-frame beside the airtight door. Floor temp is about 65* and a second temp gauge shows the hot blower air coming out is about 200*. So, my question is about getting some of those flames to put more radiant heat out of the firebox and into the living area. Do you ever leave your stove door wide open for any length of time after the fire is nice and even and the flames are steady? Besides the issue of a popping spark now and then, would more "good air" be sucked out and lost as it goes up the 6" flu liner than an open door's heat dump into the room?