Before the 20th century, 90% of Americans burned wood to heat their homes. As fossil fuel use rose, the percentage of Americans using wood for fuel dropped, falling as low as one percent by 1970. Then during the energy crises of the 1970s, interest in wood heating resurfaced as a renewable energy alternative.
Newer on the scene are pellet fuel appliances, which burn small pellets that look like rabbit feed and measure 3/8 to 1 inch in length. Pellets are made from compacted sawdust, wood chips, bark, agricultural crop waste, waste paper, and other organic materials. Some pellet fuel appliances can burn a wide variety of biomass fuels, including nutshells, corn kernels, small wood chips, barley, beet pulp, sunflowers, dried cherry pits, and soybeans.
Wood Heat Stoves: What you need to know

About Firewood
Gathering Firewood
When using a fireplace or wood stove for heat, you can, of course, cut and gather your own firewood. That not only requires a healthy amount of time, however, but also requires an initial investment of equipment like axes and saws and splitters. It also demands a working knowledge of cutting wood.
You Can Also Purchase Firewood
Although there are a variety of measuring units, firewood is normally sold by the cord, or a fraction of a cord. The dimensions of a "standard cord" is a stack of wood piled 8 feet long, 4 feet wide and 4 feet high. You won't get a full 128 cubic feet of firewood with a standard cord because of the airspace between the pieces of the wood; the amount of wood in such a stack will depend upon the size and straightness of the pieces, how they are split and how the wood is stacked. Because of this, the total cubic feet in a cord can vary from 70 to 90 or more cubic feet.
Firewood Cost
In Northern NJ a cord of seasoned split firewood will cost $150 to $225. There my be additional charges for staking and delivery. Find someone local and work out a deal. Ordering more than one cord at a time will save you money. Becareful some wood guys mix seasoned wood with newly cut green wood.
Orders of firewood should be placed well in advance of the heating season. Wood purchased during the peak periods is in more demand and becomes more expensive. You will also want to purchase early to give the wood time to season.
When wood is stacked outdoors with good air circulation in a spot that's dry, sunny and open for about six months it will be dry enough to support efficient combustion. Seasoned wood has a higher heating value than green wood. In general, because of its moisture content, a cord of green wood will weigh 70 to 100 percent more than seasoned wood.
The time of year and the size of the wood pieces influences the amount of time that wood takes to season. You can help the process by properly stacking and storing your pile of firewood. The best way is to store it outside, under cover and close to the house and door that leads to your stove for easy access.
It should be stacked on a supporting base. Such as cement blocks, pallets or wooden planks. This prevents the wood from drawing moisture from the ground, allows air to circulate around it, reduces insect infestation and cuts down on the amount of dirt in accumulates. End braces or stakes can be used to keep the woodpile from collapsing; they can be built to measure accurately a standard cord.
The Best Woods For Burning
In either a wood stove or fireplace, the easiest and best fire is built by using a mixture of both softwoods and hardwoods.
Softwoods start burning easily, and the hardwoods provide for long burning and good "coaling" qualities. A bed of ashes underneath the grate produces steady heat and aids in igniting new fuel as it is added. The fire will continue burning if small amounts of wood are added at regular intervals. In fact, more efficient combustion results from burning small loads of wood with sufficient air than from burning large loads with minimal air.
Firewood Guide BTU Rating Chart
Type of Wood
|
Heat |
Easy to Burn |
Easy to Split |
Heavy Smoke |
BTUs per Cord |
Rating |
|
Ash Black |
Medium |
Yes |
Yes |
No |
19.1 Mil |
Excellent |
|
Ash Green |
High |
Yes |
Yes |
No |
20.0 |
Excellent |
|
Ash White |
High |
Yes |
Medium |
Np |
23.6 |
Excellent |
|
Red Oak |
High |
Yes |
Yes |
No |
21.7 |
Excellent |
|
White Oak |
High |
Yes |
Yes |
No |
26.5 |
Excellent |
|
Live Oak |
High |
Yes |
Yes |
No |
25.0 |
Excellent |
|
Beech |
High |
Yes |
Yes |
No |
21.8 |
Excellent |
|
Beech Blue |
High |
Yes |
Yes |
No |
26.8 |
Excellent |
|
Birch Black |
High |
Yes |
Yes |
No |
26.8 |
Excellent |
|
Birch Grey |
High |
Yes |
Yes |
No |
20.3 |
Good |
|
Birch Paper |
High |
Medium |
Medium |
Medium |
20.8 |
Fair |
|
Birch White |
High |
Medium |
Medium |
Medium |
20.3 |
Good |
|
Birch Yellow |
High |
Yes |
Yes |
No |
23.6 |
Excellent |
|
Box Elder |
Medium |
Medium |
No |
Medium |
18.3 |
Fair |
|
Buckeye Ohio |
Low |
Medium |
Medium |
No |
13.8 |
Fair |
|
Butternut |
Low |
Medium |
Yes |
Medium |
14.5 |
Fair |
|
Catalpa |
Low |
Medium |
No |
Medium |
15.5 |
Fair |
|
Cedar Eastern Red |
Medium |
Medium |
Medium |
Medium |
17.1 |
Fair |
|
Coffeetree Kentucky |
High |
Medium |
Medium |
No |
21.6 |
Good |
|
Hickory Bitternut |
High |
Yes |
Yes |
No |
26.7 |
Excellent |
|
Hickory Shagbark |
High |
Yes |
Medium |
No |
27.5 |
Excellent |
|
Hard Maple |
High |
Yes |
Yes |
No |
29.7 |
Excellent |
|
Pecan |
High |
Yes |
Yes |
No |
|
Excellent |
|
Dogwood |
High |
Yes |
Yes |
No |
24.3 |
Excellent |
|
Soft Maple |
Medium |
Yes |
Yes |
No |
19.1 |
Good |
|
Cherry |
Medium |
Yes |
Yes |
No |
18.5 |
Good |
|
Black Cherry |
Medium |
Yes |
Yes |
No |
18.6 |
Good |
|
Walnut |
Medium |
Yes |
Yes |
No |
20.3 |
Good |
|
Elm American |
High |
Medium |
No |
Medium |
20.00 |
Fair |
|
Elm Red |
High |
Medium |
Yes |
Medium |
21.6 |
Good |
|
Elm Rock |
High |
Medium |
No |
Medium |
23.5 |
Good |
|
Elm Siberian |
High |
Medium |
No |
Medium |
20.9 |
Fair |
|
Hackberry |
High |
Yes |
Yes |
No |
21.2 |
Excellent |
|
Sycamore |
Medium |
Medium |
No |
Medium |
18.5 |
Fair |
|
Gum Black |
Medium |
Medium |
No |
Medium |
18.1 |
Fair |
|
Gum Sweet |
Medium |
Medium |
Medium |
Medium |
18.7 |
Good |
|
Mesquite |
High |
Medium |
No |
Medium |
|
Good |
|
Aspen |
Low |
Yes |
Yes |
Medium |
14.5 |
Fair |
|
Basswood |
Low |
Yes |
Yes |
Medium |
12.6 |
Fair |
|
Cottonwood |
Low |
Yes |
Yes |
Medium |
12.2 |
Fair |
|
Chestnut |
Low |
Yes |
Yes |
Medium |
|
Poor |
|
Yellow Poplar |
Low |
Yes |
Yes |
Medium |
16.0 |
Poor |
|
Southern Yellow Pine |
High |
Yes |
Yes |
Yes |
|
Good |
|
Douglas Fir |
High |
Yes |
Yes |
Yes |
21.4 |
Good |
|
Cypress |
Medium |
Medium |
Yes |
Medium |
|
Fair |
|
Redwood |
Medium |
Medium |
Yes |
Medium |
|
Fair |
|
White Cedar |
Medium |
Yes |
Yes |
Medium |
17.5 |
Good |
|
Western Red Cedar |
Medium |
Yes |
Yes |
Medium |
17.5 |
Good |
|
Mulberry |
High |
Yes |
Yes |
Medium |
25.8 |
Excellent |
|
Eastern Red Cedar |
Medium |
Yes |
Yes |
Medium |
17.5 |
Good |
|
Juniper |
Medium |
Yes |
Yes |
Medium |
|
Good |
|
Piinon |
Medium |
Yes |
Yes |
Medium |
|
Good |
|
Eastern White Pine |
Low |
Medium |
Yes |
Medium |
15.8 |
Fair |
|
Western White Pine |
Low |
Medium |
Yes |
Medium |
15.8 |
Fair |
|
Sugar Pine |
Low |
Medium |
Yes |
Medium |
15.8 |
Fair |
|
Ponderosa Pine |
Low |
Medium |
Yes |
Medium |
17.0 |
Fair |
|
True Firs |
Low |
Medium |
Yes |
Medium |
19.5 |
Fair |
|
Tamarack |
Medium |
Yes |
Yes |
Medium |
20.8 |
Fair |
|
Larch |
Medium |
Yes |
Yes |
Medium |
20.8 |
Fair |
|
Spruce |
Low |
Yes |
Yes |
Medium |
15.9 |
Poor |
|
Alder |
Medium |
Fair |
Yes |
Medium |
17.6 |
Fair |
|
Apple |
Medium |
No |
No |
Medium |
17.6 |
Fair |
|
Ironwood (Hornbeam) |
Very High |
Yes |
No |
No |
24.7 |
Excellent |
|
Black Locust |
Very High |
Yes |
No |
No |
26.5 |
Excellent |
|
Honey Locust |
High |
Yes |
Medium |
No |
25.8 |
Excellent |
|
Magnolia |
Medium |
Yes |
Yes |
No |
18.0 |
Fair |
|
Madrone |
High |
No |
No |
No |
30.0 |
Excellent |
|
Willow |
Low |
No |
Yes |
Fair |
14.5 |
Fair |