United States Stove Company 22AF - Manual (Page 31)

31 •DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
TYPE WEIGHT PER CORD EFFICIENCY SPLITS MILLIONS
(LBS. CU. FT., DRY)
RANKING BTU's/CORD
Hickory 63 4500 1.0 Well 31.5
White Oak 48 4100 .9 Fair 28.6
Red Oak 46 3900 .8 Fair 27.4
Beech 45 3800 .7 Hard 26.8
Sugar Maple 44 3700 .6 Fair 26.2
Black Oak 43 3700 .6 Fair 25.6
Ash 42 3600 .5 Well 25.0
Yellow Birch 40 3400 .4 Hard 23.8
Red Maple 38 3200 .3 Fair 22.6
Paper Birch 37 3100 .3 Easy 22.1
Elm/Sycamore 34 2900 .2 Very Difficult 20.1
Red Spruce 29 1800 .1 Easy 16.1
HEATING WITH WOOD