(908) 359-5368

Located at:
265 US 206, Hillsborough NJ 08844
Hours of operation:
Monday-Saturday, 9 a.m.-5 p.m.
Sunday, - Closed
Self Serve Kiosk Open 24 hours.

Firewood Facts

Firewood Facts (based on data from Utah State University Forestry Extension)

SpeciesWeight (lbs./Cord)Heat per Cord (Million BTUs)% of Green AshEase of SplittingSmokeSparksCoalsFragranceOverall Quality
GreenDry
Apple 4850 3888 27.0 135 Medium Low Few Good Excellent Excellent
Ash, Green 4184 2880 20.0 100 Easy Low Few Good Slight Excellent
Alder   2540 17.5   Easy   Moderate Good Slight  
Ash, White 3952 3472 24.2 121 Medium Low Few Good Slight Excellent
Aspen, Quaking   2160 18.2   Easy   Few Good Slight  
Basswood (Linden) 4404 1984 13.8 69 Easy Medium Few Poor Good Fair
Beech   3760 27.5   Difficult   Few Excellent Good  
Birch 4312 2992 20.8 104 Medium Medium Few Good Slight Fair
Boxelder 3589 2632 18.3 92 Difficult Medium Few Poor Slight Fair
Buckeye, Horsechestnut 4210 1984 13.8 69 Medium Low Few Poor Slight Fair
Catalpa 4560 2360 16.4 82 Difficult Medium Few Good Bad Fair
Cedar, Red   2060 13.0   Easy Low Many Poor slight Fair
Cherry 3696 2928 20.4 102 Easy Low Few Excellent Excellent Good
Chestnut     18.0           Good Good
Coffeetree, Kentucky 3872 3112 21.6 108 Medium Low Few Good Good Good
Cottonwood 4640 2272 15.8 79 Easy Medium Few Good Slight Fair
Dogwood   4230 High   Difficult   Few Fair    
Douglas-fir 3319 2970 20.7 103 Easy High Few Fair Slight Good
Elm, American 4456 2872 20.0 100 Difficult Medium Few Excellent Good Fair
Elm, Siberian 3800 3020 20.9 105 Difficult Medium Few Good Fair Fair
Fir, White 3585 2104 14.6 73 Easy Medium Few Poor Slight Fair
Hackberry 3984 3048 21.2 106 Easy Low Few Good Slight Good
Hemlock   2700 19.3   Easy   Many Poor Good  
SpeciesWeight (lbs./Cord)Heat per Cord (Million BTUs)% of Green AshEase of SplittingSmokeSparksCoalsFragranceOverall Quality
GreenDry
Honeylocust 4640 3832 26.7 133 Easy Low Few Excellent Slight Excellent
Juniper, Rocky Mountain 3535 3150 21.8 109 Medium Medium Many Poor Excellent Fair
Larch (Tamarack)   3330 21.8   Easy-med   Many fair Slight Fair
Locust, Black 4616 4016 27.9 140 Difficult Low Few Excellent Slight Excellent
Maple, Other 4685 3680 25.5 128 Easy Low Few Excellent Good Excellent
Maple, Silver 3904 2752 19.0 95 Medium Low Few Excellent Good Fair
Mulberry 4712 3712 25.8 129 Easy Medium Many Excellent Good Excellent
Oak, Bur 4960 3768 26.2 131 Easy Low Few Excellent Good Excellent
Oak, Gamble     30.7              
Oak, Red 4888 3528 24.6 123 Medium Low Few Excellent Good Excellent
Oak, White 5573 4200 29.1 146 Medium Low Few Excellent Good Excellent
Osage-orange 5120 4728 32.9 165 Easy Low Many Excellent Excellent Excellent
Pine, Ponderosa 3600 2336 16.2 81 Easy Medium Many Fair Good Fair
Pine, Lodgepole   2610 21.1   Easy   Many Fair Good Fair
Pine, White   2250 15.9   Easy   Moderate poor Good  
Pinon   3000 27.1   Easy   Many      
Poplar   2080 Low   Easy   Many Fair Bitter  
Redcedar, Eastern 2950 2632 18.2 91 Medium Medium Many Poor Excellent Fair
Spruce 2800 2240 15.5 78 Easy Medium Many Poor Slight Fair
Spruce, Engleman   2070 15.0 78 Easy   Few Poor Slight  
Sycamore 5096 2808 19.5 98 Difficult Medium Few Good Slight Good
Walnut, Black 4584 3192 22.2 111 Easy Low Few Good Good Excellent
Willow 4320 2540 17.6 88 Easy Low Few Poor Slight Poor


Green weight is the weight of a cord of freshly cut wood before drying. Dry weight is the weight of a cord after air drying. Green firewood may contain 50% or more water by weight. Green wood produces less heat because heat must be used to boil off water before combustion can occur. Green wood also produces more smoke and creosote (material that deposits on inside walls of chimneys and may cause chimney fires) than dry wood. Firewood should therefore always be purchased dry or allowed to dry before burning. Dry wood may cost more than green wood because it produces more heat and is easier to handle.

A wood’s dry weight per volume, or density, is important because denser or heavier wood contains more heat per volume. Osage-orange is a very dense firewood with limited availability in Utah. It’s included here to show what a very dense wood is like. It contains almost twice the heat by volume of cottonwood, one of our lightest woods. In general it is best to buy or gather dense woods such as oak, hard maple, or ash. Hardwoods, or woods from broadleaved trees, tend to be denser than softwoods or woods from conifers. Some firewood dealers sell “mixed hardwood” firewood. This may or may not be desirable, depending on the proportion of low- density hardwoods such as cottonwood that are included.

The amount of heat per cord of dry wood is presented in the table above. Heat content is shown as a percent of dry green ash, a fairly common, dense firewood. Values above 100 signify a higher heat content than green ash and below 100 a lower heat content.

The information above also contains information on other characteristics that determine firewood quality. Ease of splitting is important because larger pieces of wood must usually be split for good drying and burning. Fragrance and tendency to smoke and spark are most important when wood is burned in a fireplace. Woods that spark or pop can throw embers out of an open fireplace and cause a fire danger. Conifers tend to do this more because of their high resin content. Woods that form coals are good to use in wood stoves because they allow a fire to be carried overnight effectively.