Firewood 1m: everything you need to know to make the right choice

Firewood 1m: choosing the right wood, storing it correctly, and optimizing your firewood profitability requires more than common sense. Between the species that determine calorific value, the rate of wood moisture that makes all the difference, and the classic storage errors, I provide here concrete benchmarks drawn from my 15 years of field experience. This article explains why to prioritize dense hardwoods for sustainable heating, how to check that wood is truly dry (H1), what length to order according to your appliance, and how to convert steres and m³ to avoid unpleasant surprises upon delivery. We also follow the journey of Laurent, a Breton owner who learned the hard way that damp wood costs more to use than well-dried wood. You will find purchasing advice, labels to know, conversion tables, and storage tips. In the end, you will know how to choose your wood 1m without being taken advantage of and preserve your stove, insert, or boiler.

• Priority: dense species (oak, beech, hornbeam, ash) for long-lasting and economical heating.
• Moisture: aim for < 20% (H1 certificate) for clean and safe performance.
• Size: adapt the length (25–50 cm) to your appliance to avoid waste.
• Storage: protected, on pallets, breathable tarpaulin; ventilate to prevent mold.
• Purchase: prioritize certified suppliers or networks like ONF Énergie Bois for wood quality.

Firewood 1m: which species to prioritize for efficient wood heating

On the ground, the question that often arises is: “What type of wood should I order?” The answer depends on the goal: heat retention, quick ignition, or initial budget. Types of wood are generally classified into hard hardwoods (G1), intermediate hardwoods (G2), and softwoods/tender woods (G3).

Hardwoods—oak, beech, hornbeam, ash—offer slow combustion and high calorific value. At 20% moisture, one generally obtains between 2,100 and 2,500 kWh/stere, making it the most efficient option when seeking firewood profitability. Soft and resinous woods like birch or pine are mainly used for ignition; they ignite quickly but do not hold heat well.

Recommended species and average yields

Here’s a summary table for quickly comparing performance according to species and recommended use.

Species	Category (G)	Approximate yield (kWh/stere at 20% H)	Recommended use
Oak	G1	2,200 – 2,500	Long-duration heating, ideal for night
Beech	G1	2,100 – 2,400	Constant warmth, good compromise
Ash / Hornbeam	G1	2,000 – 2,300	Regular combustion, easy to split
Birch, poplar	G2/G3	~1,400 – 1,800	Ignition, temperature rise
Softwoods (fir, pine)	G3	~1,200 – 1,500	Ignition, not for continuous combustion

For information on more specific species like chestnut and its uses, refer to a detailed technical file on chestnut in heating and a complementary sheet on choosing chestnut. These resources have often assisted me during projects in rural areas.

Insight: prioritize G1 if you want a profitable investment for the heating season.

Wood moisture: why aim for dry wood H1 for clean and safe wood heating

Wood moisture is the criterion that most influences combustion quality. Damp wood wastes energy drying out during combustion, creates more smoke, and accelerates the fouling of flues. We speak of dry certified H1 wood when the rate is below 20%.

The NF Firewood standard distinguishes H1 (dry) and H2 (wet); the supplier’s invoice should ideally specify this mention. Woods between 20% and 35% are “semi-dry”, and above 35% we speak of green wood.

How to check and reduce moisture: methods and tools

• Visual check: split logs, lighter wood on the surface, clear resonance when striking two logs together.
• Reliable tool: use a moisture meter to confirm a rate below 20%.
• Drying: allow up to 2–3 years for certain species if the wood is green; store in a sheltered and ventilated area.
• Beware of cheap purchases: they often hide damp wood that will cost you more in use; see the alert about sales conditions and restrictions in certain regions via this article on prohibition and regulation.

Insight: H1 labeled wood avoids premature sweeping work and improves the longevity of your installation.

Wood 1m and packaging: understanding stere, stacked m³, and bulk m³ to buy right

The length of the logs affects the apparent volume. The term “stere” is still often used in common language, but the legal sales unit is the m³. Depending on the length, a well-stacked stere corresponds to a different real volume: the shorter the logs, the more densely they stack.

Before purchasing, check if the seller indicates stacked m³ or bulk m³ and apply the correct coefficient to compare actual prices.

Conversion table stere / m³ according to length

Length of logs	1 stere = stacked m³	1 m³ = stere (approx.)
1 meter	1 stere = 1 m³	1 m³ = 1 stere
50 cm	1 stere ≈ 0.80 m³	1 m³ ≈ 1.25 stere
33 cm	1 stere ≈ 0.70 m³	1 m³ ≈ 1.43 stere
25 cm	1 stere ≈ 0.60 m³	1 m³ ≈ 1.67 stere

If you are considering purchasing logs or rough wood to transform, refer to practical resources for purchasing logs and processing via these sheets on log purchasing and buying wood in logs. These options are suitable for DIY enthusiasts or local sawmill instructors but require more effort for drying and storage.

Insight: always check the sales unit (stacked m³ vs. bulk) for a fair comparison of prices.

Wood storage: simple methods to preserve wood quality and minimize wood maintenance

Storage determines the lifespan of the wood and its calorific power. Even dry wood becomes problematic if stored on damp or poorly ventilated ground. To optimize wood quality and reduce wood maintenance, follow practical and economical rules.

In my experience, customers who stack their wood on pallets and allow air to circulate have less soot and cleaner flues the following winter.

• Place logs on pallets or blocks: avoids contact with the ground and moisture.
• Breathable cover: a tarpaulin that protects the top without sealing the sides.
• Ventilation: leave space between rows for air circulation.
• Orientation: take advantage of a sunny location sheltered from prevailing winds.
• Rotation: use the oldest wood first (FIFO – first in, first out).

Insight: proper storage is often more cost-effective than seeking the cheapest wood without checking moisture.

Where to buy your 1m wood: suppliers, labels, and recommended purchase periods

The choice of supplier influences wood quality. Favor certified players or networks that guarantee moisture content and traceability. The main recognized networks are France Bois Bûche and ONF Énergie Bois. Among the leading online sales sites, some companies highlight quality and delivery across the territory.

For targeted purchases, compare offers and the H1 mention on the invoice. If you consider a compressed product or pellets, inquire with local suppliers to minimize transport costs and support the local economy.

Some useful addresses to deepen your choice:

• Commercial sheet on a frequent sale: Sugarai offer.
• Alternatives and supplies: article on wood sales by Sugarai (detailed version).
• Market study and local consumption, useful if you live in a specific region like Brittany: consumption in Brittany.
• For specific species and in-depth local sales: chestnut file.
• If you are considering a large-format purchase, read this guide first on log purchasing.

When to buy? The ideal period is between spring and summer (May–August): wood benefits from natural drying, and prices are often lower. It’s also when delivery times are reduced.

Insight: prefer a transparent supplier who indicates H1/H2, offers customer references, and preferably belongs to a recognized network.

Connecting thread: Laurent’s experience

Laurent, a homeowner in Brittany, ordered a large quantity of wood before winter. Attracted by a low price, he received quite damp wood. The result: more sweeping, lower yield, and a higher energy bill. After discussion, he preferred to order from a nearby ONF distributor and store the wood correctly. Result the following winter: cleaner flame, lower consumption, and less maintenance.

This case illustrates a simple rule: the purchase price is not the final criterion; it is the wood quality at the end of storage that will determine satisfaction during the season.

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What is the ideal moisture rate for firewood?

Good firewood has a moisture content of less than 20% (category H1). Beyond that, combustion is less efficient and produces more soot and particles.

What length should I choose for my logs?

Adapt the length to your appliance: 25 cm for small stoves, 33 cm for standard stoves, 50 cm for large fireplaces or boilers. Measure the shoulder before buying.

How to store wood so that it remains dry?

Store on pallets, under a shelter or a breathable tarpaulin, leaving the sides open for ventilation. Position the pile in the sun if possible and maintain stock rotation.

How to compare offers between stere and m³?

Check if the volume is indicated in stacked m³ or in bulk. Use the compaction coefficients (e.g., 1 m³ ≈ 1.25 steres for logs of 50 cm in bulk) for a correct comparison.