Only Burn Dry, Cured Wood

That is, logs that have been split, stacked, and dried for eight to 12 months. Cover your log pile on top, but leave the sides open for air flow.

Hardwoods such as hickory, white oak, beech, sugar maple, and white ash burn longest, though dry firewood is more important than the species. Less dense woods like spruce or white pine burn well if sufficiently dry, but you’ll need to add more wood to your fire more often, according to the Chimney Safety Institute of America (CSIA).