Recommended heating area sq. 900 – 2,300. Maximum burn time :&#######xA0. Maximum heat output (dry cordwood) :&#######xA0;(2). 90,000 BTU/h (26.4 kW). Overall heat output rate min. :&#######xA0;(2)&#######xA0;(3). 11,700 BTU/h (3.4 kW) to 26,400 BTU/h (7.7 kW). Average overall efficiency (EPA cribs / Douglas fir) :(3). 67.5 % (HHV)&#######xA0;(4). 72.9 %…