Saco TreeworksFirewood Ratings
| SPECIES | SEASONED WEIGHT – LBS PER CORD | HEAT PRODUCED – MILLION BTUs PER CORD |
| Ironwood (Hop Hornbeam) | 4,016 | 27.3 |
| Black Locust | 3,890 | 26.8 |
| Apple | 4,100 | 26.5 |
| White Oak | 4,012 | 25.7 |
| American Beech | 3,757 | 24 |
| Sugar Maple | 3,757 | 24 |
| Red Oak | 3,757 | 24 |
| White Ash | 3,689 | 23.6 |
| Yellow Birch | 3,689 | 23.6 |
| Tamarack | 3,247 | 20.8 |
| Paper Birch | 3,179 | 20.3 |
| Gray Birch | 3,179 | 20.3 |
| Black Cherry | 2,880 | 19.9 |
| American Elm | 3,052 | 19.5 |
| Red Maple | 2,924 | 18.7 |
| Pine (Jack, Norway & Pitch) | 2,669 | 17.1 |
| Eastern Hemlock | 2,482 | 15.9 |
| Red Spruce | 2,482 | 15.9 |
| Poplar | 2,290 | 14.7 |
| Butternut | 2,100 | 14.5 |
| Willow | 2,100 | 14.5 |
| Balsam Fir | 2,236 | 14.3 |
| White Pine | 2,236 | 14.3 |
| Basswood | 2,108 | 13.5 |
| Arborvitae (White Cedar) | 1,913 | 12.2 |