I have a 1600 m and am trying anthracite stove coal this year . i have been burning wood the last 5 years,but its seems to use too much wood. IT either overheats my home,or cloggs my chimney . my house is a 1600 sq ft farmhouse . i believe the unit is oversized a bit,especially as i begain to insulate my home. my thought was to burn coal and just damper it back as needed. anyone have a 1600? ANY THOUGHTS?