Oak and maple are the two hardwoods most often offered side by side in the eastern US, and the honest answer is that oak wins on heat and maple wins on time. Which matters more depends entirely on when you need to burn it.
There is also a trap in the question: maple is two very different woods depending on which maple, and sellers rarely say which.
The numbers
| Species | Million BTU per cord | Seasoned weight (lb) |
|---|---|---|
| White oak | 25.7 | 4,200 |
| Red oak | 24.0 | 3,757 |
| Sugar maple | 24.0 | 3,757 |
| Red maple | 18.6 | 2,900 |
White oak leads at 25.7 million BTU per cord, about 7 percent ahead of sugar maple. Red oak and sugar maple are level at 24.0.
The number to notice is red maple, at 18.6 million BTU. That is 29 percent below sugar maple, and it is sold under the same one word name.
Which maple are you being sold?
This is the practical issue with maple. “Maple” covers:
- Sugar maple, also called hard maple or rock maple. Dense, high heat, genuinely comparable to red oak.
- Red maple, also called soft maple. Considerably lighter, and it burns like it.
Silver maple and box elder are lighter again. A seller quoting a cord of maple may have any of these on the truck, and the difference between the best and worst is larger than the difference between oak and maple as categories.
Ask which maple. If the answer is vague, price it as soft maple.
Where oak wins
Overnight burns. This is oak’s real advantage and it is not fully captured by the BTU column. Dense wood holds coals, so a firebox loaded with oak at bedtime is more likely to have live coals at six in the morning. Maple burns hot and settles sooner.
Cold weather, sustained heat. When the stove is running continuously in deep winter, the extra density means fewer reloads for the same output.
Coaling. Oak produces a long lived coal bed, which is what you want under a sustained fire. Maple produces a shorter one.
Where maple wins
Seasoning time, which is decisive. Oak needs a full year split and stacked, and white oak often closer to two. Maple is generally ready in six to twelve months.
That difference outweighs the heat advantage in one very common case: you need to burn it this winter. A cord of seasoned maple beats a cord of half seasoned oak by a wide margin, because wet oak spends its energy boiling off water and coats your flue with creosote while doing it. The rated heat content of oak is only available if the oak is actually dry.
Splitting. Maple splits considerably more easily than oak, especially by hand. If you are processing rounds yourself rather than buying split wood, this is real work saved.
Shoulder season. In October and April a hot, shorter fire suits the weather better than banking dense oak you do not need.
What to pay
On heat content alone, white oak justifies roughly a 7 percent premium over sugar maple, and rather more over red maple. That is the fair premium. Much more than that is paying for the name.
Two rules before agreeing a price:
- Ask which maple, since sugar and red are 29 percent apart.
- Ask when the oak was split. Not felled, split. Oak split last month is green wood no matter how long the log sat in the yard, and green oak at a seasoned price is the worst deal in this market.
Put both quotes through the firewood cost calculator, which adjusts for heat content by species and normalises face cord quotes to a price per full cord.
The practical answer
Buy oak if you are buying ahead, in spring, for next winter or the one after. You get the best heat and burn time available in most of the eastern US, and you have given it the time it needs.
Buy sugar maple if you are buying for this season, or if you are splitting it yourself. You give up a few percent of heat and get wood that is actually ready to burn.
Buy a mix if it is offered, which most yards do. Maple and ash for the shoulder season and daytime fires, oak for the cold nights, is how most experienced burners run a woodpile.
For how these sit against the other species available to you, see the best firewood to burn.