Heating Characteristics of Wood
| Species | Density | Weight per | BTUs per cord | Recoverable BTUs | Units needed to |
| (lb./cu.ft.) | cord (lb.) | (millions) | per cord (millions) | produce 1 million BTUs | |
| black locust | 52.5 | 4462 | 28.5 | 19.95 | 0.051 |
| hickory | 50.9 | 4327 | 27.7 | 19.39 | 0.052 |
| east hophornbeam | 50.2 | 4267 | 27.3 | 19.11 | 0.052 |
| apple | 48.7 | 4100 | 26.5 | 18.55 | 0.054 |
| white oak | 47.2 | 4012 | 25.7 | 17.99 | 0.056 |
| sugar maple | 44.2 | 3757 | 24 | 16.8 | 0.06 |
| red oak | 44.2 | 3757 | 24 | 16.8 | 0.06 |
| beech | 44.2 | 3757 | 24 | 16.8 | 0.06 |
| yellow birch | 43.4 | 3689 | 23.6 | 16.52 | 0.061 |
| white ash | 43.4 | 3689 | 23.6 | 16.52 | 0.061 |
| hackberry | 38.2 | 3247 | 20.8 | 14.56 | 0.069 |
| tamarack | 38.2 | 3247 | 20.8 | 14.56 | 0.069 |
| paper birch | 37.4 | 3179 | 20.3 | 14.21 | 0.07 |
| cherry | 36.7 | 3121 | 20 | 14 | 0.071 |
| elm | 35.9 | 3052 | 19.5 | 13.65 | 0.073 |
| black ash | 35.2 | 2992 | 19.1 | 13.37 | 0.075 |
| red maple | 34.4 | 2924 | 18.7 | 13.09 | 0.076 |
| box elder | 32.9 | 2797 | 17.9 | 12.53 | 0.08 |
| jack pine | 31.4 | 2669 | 17.1 | 11.97 | 0.084 |
| norway pine | 31.4 | 2669 | 17.1 | 11.97 | 0.084 |
| hemlock | 29.2 | 2482 | 15.9 | 11.13 | 0.09 |
| black spruce | 29.2 | 2482 | 15.9 | 11.13 | 0.09 |
| ponderosa pine | 28 | 2380 | 15.2 | 10.64 | 0.094 |
| aspen | 27 | 2290 | 14.7 | 10.29 | 0.097 |
| white pine | 26.3 | 2236 | 14.3 | 10.01 | 0.1 |
| balsam fir | 26.3 | 2236 | 14.3 | 10.01 | 0.1 |
| cottonwood | 24.8 | 2108 | 13.5 | 9.45 | 0.106 |
| basswood | 24.8 | 2108 | 13.5 | 9.45 | 0.106 |