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Wood for Home Heating

Most species of wood contain approximately the same amount of energy per pound, assuming they are at the same moisture content. Firewood at 20 percent moisture content or air seasoned for at least one year has approximately 7,000 Btu of energy per pound.  Species differences occur in firewood because of the density variation across species. InIowa, basswood weights about 25 pounds per cubic foot and shagbark hickory weighs 51 pounds.