For biomass boilers and wood stoves to operate efficiently, the wood fuel must have a low moisture content. High-moisture wood produces less heat because a significant amount of energy is used to evaporate the water during combustion. This not only reduces the heating potential but also results in increased emissions of smoke and particulates, contributing to air pollution.
Wood that is too wet can also cause the build-up of creosote in chimneys and flues, increasing the risk of chimney fires and requiring more frequent maintenance. Dry wood, on the other hand, burns hotter, cleaner, and more efficiently, providing a more consistent and higher heat output while lowering emissions.
The UK’s "Ready to Burn" certification was introduced to ensure that wood fuel sold for domestic use is of high quality and safe for combustion in modern appliances. For wood to qualify as "Ready to Burn," it must have a moisture content of 20% or less, which ensures it burns more efficiently and with fewer harmful emissions. This certification, governed by the Woodsure scheme, allows consumers to buy firewood and wood products with confidence, knowing that the product has been tested and meets government standards for clean burning.
For those using biomass boilers, the Biomass Suppliers List (BSL) is another important accreditation to be aware of. The BSL is a UK government initiative that ensures biomass fuel is sourced sustainably and meets strict quality standards. Biomass boilers are eligible for the Renewable Heat Incentive (RHI) payments, but only if they use fuel that is listed on the BSL. For wood chip and logs to be included, they must be moisture tested to meet the quality standards that maximise efficiency and reduce emissions.
Using BSL-accredited wood chip or logs not only guarantees sustainability but also provides peace of mind that the fuel will meet the moisture content requirements for optimal boiler performance. Moisture content of 30% or less is typically required for biomass boilers to run efficiently and avoid issues like incomplete combustion or higher maintenance costs.
Moisture testing is a vital step in ensuring that the wood chip or logs you use for your biomass boiler or wood stove are safe, efficient, and environmentally responsible. By choosing fuel that carries the "Ready to Burn" certification and BSL accreditation, you not only improve the efficiency of your heating system but also reduce harmful emissions and ensure compliance with UK regulations. At Bowland Bioenergy, we prioritise moisture testing and certification to provide you with high-quality, sustainable wood fuel you can trust for all your heating needs.
