In New Zealand, wood heating continues to be a trusted and effective way to warm the home. However, the quality of your fire begins well before ignition — and selecting the right firewood is a critical part of that process. With the right knowledge, homeowners can ensure cleaner burning, greater efficiency, and a longer-lasting fire.
1. Wood Species
Softwoods such as radiata pine, macrocarpa, and Douglas fir (Oregon) are the most commonly used firewood species across the country. These are readily available, affordable, and, when properly seasoned, provide strong heat output. While softwoods do tend to burn faster than hardwoods, their performance can be excellent when correctly prepared and managed. In some areas, dense native hardwoods like kānuka or beech may also be available and are valued for their longer burn time.
2. Seasoning your wood
Proper seasoning of firewood is essential. Freshly cut timber contains a high level of moisture, which inhibits combustion, reduces heat output, and increases the production of smoke and creosote. Firewood should be seasoned for a minimum of 12 months and should have a moisture content of less than 20% before use. A moisture meter is the most accurate way to confirm this, although other indicators include visible checking (cracks in the end grain), reduced weight, and a hollow sound when two pieces are knocked together.
3. Size and splitting matters!
Splitting firewood enhances the seasoning process and supports more effective combustion. Smaller, well-split logs offer increased surface area, helping them dry more quickly and burn more efficiently once in use.
4. Storage conditions
Firewood must be stored in a way that supports airflow and protects it from excess moisture. Elevating the wood off the ground and stacking it loosely under cover — such as in a ventilated wood shed — will promote drying and help maintain quality throughout the seasons. Purpose-built storage solutions can also assist in maintaining both function and visual appeal around the home.
5. Clean and safe burning
Finally, it is vital to ensure that the firewood being used is untreated and free from any paints, oils, stains, or other chemical coatings. Burning treated or contaminated wood can release harmful toxins and damage the internal components of your appliance.
By choosing appropriate local species, ensuring proper seasoning, and storing firewood with care, New Zealand households can maximise the performance of their wood-burning appliances — ensuring safer, cleaner, and more efficient fires throughout the colder months.