I never thought about sucking the hot air
I just went down and check it out, the outer most metal ring of the baro is 88, right above the the stove. If I move it up I can only move it up 18" and then the air temp there is 88 also. I'm working on putting a jacket on my stove so I am gathering most of the air off the back and top, hopefully with in the next week or two I will have the jacket done sealed up with the sides and a 1500 cfm blower pushing the air through out my duct work.
On a side note the first coal I burned was Kimmels, 10 bags emptying the ash pan sometimes 2 times a day and filling the hopper 2 times a day as well. I bought 1200 ponds of loose from my local supplier and I only fill the hopper once a day and empty the hopper once a day as well- and its even colder now! I don't have a coal-trol I have the old rheostat set a about 3 1/2 and the main part of the house is 68-70. Did I mention its darn close to zero out with a wind chill of -25
I love COAL! But I am amazed at the difference between the coal.