How Many Therms in a Cord of Wood?

What is a Therm in a Cord of Wood?

A therm in a cord of wood is a measurement of energy in a cord of wood. One therm is equal to 100,000 British Thermal Units (BTUs). A cord of wood is a stack of wood measuring 4' x 4' x 8', usually consisting of a mix of hardwoods and softwoods. A therm of wood is typically used to measure the energy content of a cord of wood for residential or commercial heating applications.

Depending on the type of wood that you use, the temperature of the wood may vary from one end to the other. This is why you should always check your wood’s temperature before using it. You should also check the temperature of the wood after you have finished using it. This will ensure that you will get the best results.

Red oak

Among the many types of wood in the world, Red Oak is among the most popular. A Red Oak tree is moderate to fast-growing and can thrive in various soil conditions.

Red Oak will give you a lot of heat if you have a wood stove. But, it may burn slower than some other types of wood.

Nevertheless, Red Oak burns exceptionally hot and gives off a savory scent when burning. This makes it a good choice for grilling meats and cooking. But if you’re looking for something a little more powerful, you might want to check out white oak. White oak has similar BTU ratings to red oak, which burns just as long.

Red Oak trees are also used for cabinetry, fence rails, and railroad ties. They are also durable and can be used in the manufacture of caskets.

The best thing about Red Oak is that it is relatively inexpensive. You can buy a cord for as little as $300 or get bundles for around $7 each. It is also reasonably easy to split. If you use it for firewood, get a good-quality piece. You can also break it into thinner pieces, which will help it burn faster and produce more heat per cord.

While there are better types of wood for fencing posts, red oak is a fine choice for heating. A cord of Red Oak can heat a two-story house. But it would help if you waited a few months before burning it to allow it to season.

You may have to put a little extra effort into splitting and seasoning your Red Oak wood, but you should be rewarded with the best-burning firewood you can buy.

Shagbark hickory

Besides its edible nuts, shagbark hickory is also known for its good quality wood products. It is a member of the Family Juglandaceae. It is found in North America. In the Eastern United States, it can be located in Alabama, Georgia, Louisiana, Mississippi, Missouri, North Carolina, South Carolina, Tennessee, Virginia, West Virginia, and Oklahoma. It grows to a height of 60-150 feet.

The wood is dense, challenging, and has exceptional shock resistance. It is used for smoking meat, paneling, and furniture. It is also used as firewood. It is said that hickory wood can rival steel in strength and density. It takes about 12 months to season, but it can be longer.

Shagbark hickory is commonly found in the eastern United States. The tree is slow-growing and long-lived. It produces edible nuts and can be cross-bred with other hickory varieties.

Several varieties of shagbark hickory include Mexican shagbark hickory, a geographical variety with a slightly angled shell. The husk of this variety is thinner than the Mexican variety.

The name Shagbark Hickory is derived from Carya, the Greek goddess of the nut tree. The tree is also known as the hickory, a word from the Algonquin Indians. It is also shortened to hackery. It is a robust and rugged tree and is considered one of the best woods for firewood.

Several shagbark “cultivars” have been named in recognition of their selection for nut production. Some of these include ‘Wilcox’ and ‘Kentucky.’ However, most of the cultivars need to be propagated.

Shagbark hickory seeds have excellent anchorage and wind resistance. They overwinter naturally in moist leaf litter. The seeds have a dormancy period, which allows them to survive the winter and germinate quickly in the spring.


In the past, a cord of wood was four pieces of unsplit timber stacked four feet high. Today, cords of wood are commonly stacked and sold in pick-up loads. They can cost as much as $240 or more.

The heat value of a cord of dry wood is calculated by adding 10% to the greenwood cord values. A typical full line of timber may be 70 to 90 cubic feet. The larger the wood, the more energy it will contain.

There may be better choices than the cord of wood with the largest BTUs. Dense hardwoods produce more heat than lighter hardwoods so they will burn longer and hotter. For best results, stock up on three cords of the thickest wood.

A cord of shagbark hickory has twice the BTU value of a line of basswood. It also has many more BTUs per pound than a cord of basswood.

For comparison, a full cord of maple wood weighs 3,680 pounds. It produces 25.5 million BTUs when burned.

The most energy-efficient way to burn wood is to use a wood stove or furnace. A wood stove can burn up to 60% more efficiently than a gas furnace.

Basswood is an excellent choice for a backyard fire but could be better for home heating. It has a low BTU value but produces a lot of smoke. Also, it isn’t very durable and can easily be infested with insects. Try mixing basswood with more durable wood to keep your fire burning longer.

The physics of burning a cord of wood is relatively easy. Basswood is a softwood with little density, so it is easy to split.


Eucalyptus is one of the best heat sources, whether you use a fireplace, a wood stove, or a log burner. The wood is hard, dense, and has an excellent burning quality. It is also resistant to insects, flames, and fires.

However, the eucalyptus is challenging to work with, and the tree tends to twist as it grows. This twisting creates problems when trying to split the wood. You will also get a lot of smoke if you try to work with eucalyptus. This can make it hard to light the fire. It is best burned on a log burner.

Eucalyptus contains high oil content, and this oil has many uses. It can be used as an insect repellent and in herbal preparations. It also has a pleasant fragrance. This fragrance is similar to incense.

Eucalyptus is also suitable for smelting. The fibers have better strength than other softwood species, and adhesives do not need to keep them strong.

Eucalyptus wood has a high BTU value. A cord of eucalyptus can provide up to 34 million BTUs. It also produces a good bed of coals. It leaves very little ash behind.

Eucalyptus is one of the world’s most valuable hardwoods, grown in 90 countries worldwide. It has a wide range of uses, including woodworking, landscaping, and as a windbreak. It has also been used in traditional medicine.

Eucalyptus firewood is more challenging to split than hardwoods, and you should try to break it soon after you cut it. You can use a hydraulic wood splitter to help you do this. However, you may need to leave it to dry for at least a week before you split it.


Using the British thermal unit (BTU) as a measure of relative heat, a standard cord of wood has about 19 million BTUs or about one-fifth of a pound of energy. The BTU values of resinous woods are between 8,000 and 9700, while non-resinous woods range from 8,000 to 8500.

Heavier woods burn hotter and produce more heat than lighter woods. In addition, dense wood has more energy per pound than soft softwood.

Hemlock is an excellent wood for firewood and campfires. Its energy content makes it a good choice for indoor fireplaces, though if you use it as a source for cooking, it’s best to ensure it’s properly seasoned.

Hemlocks are also used for paper pulp, plywood, and fence posts. They are commonly found in the northeastern United States, from Maine to Virginia. They are also susceptible to several fungal diseases.

Hemlock is not dense wood, so it burns quickly. It is also a good source of kindling. When combined with larger pieces, it’s good firewood for starting a fire in a fireplace or wood stove.

It is a good idea to store your hemlock in a dry place such as a shed or garage. However, keep the wood from sunlight or moisture because it can hold onto the water if damp. Using plastic, you can also keep mold spores from the lower layers of your logs.

It is also a good idea to consider other fuel sources, such as alternative fuels. These may offer a softer smell or a gentler burn.

It’s also possible to use a screen, such as a mesh screen or mosquito netting, to keep out insects.