Configure your parameters to calculate the approximate amount of loose volume wood you need for a 6-month heating season (October to March).

* How Our Firewood Calculation Works: This calculator models seasonal firewood consumption in loose cubic meters (m³ loose) for a standard 6-month UK heating period (October through March) using thermal engineering benchmarks established in CIBSE Guide A (Environmental Design) and the UK Government’s Standard Assessment Procedure (SAP / RdSAP) for residential energy performance. Property heat demand is derived from a baseline space-heating load of 0.055 kW/m², adjusted for building envelope transmission factors (ranging from a 0.7 structural coefficient for flats to 1.2 for detached homes) and room geometry. Total required thermal energy (kWh) accounts for operating schedules and seasonal appliance efficiency ratings defined under BS EN 16510 / EN 13240 standards and Ecodesign regulations, spanning 20% for open masonry hearths to 80% for modern Ecodesign stoves. Solid fuel calorific yields are calculated using Net Calorific Value (NCV at Lower Heating Value) equations per BS EN ISO 17225-5 (Solid Biofuels — Fuel Specifications: Graded Firewood), demonstrating how usable energy for species like Beech declines from ~1,350 kWh/m³ loose at ultra-low moisture (<10%) down to ~1,150 kWh/m³ loose at 20% moisture due to latent heat lost evaporating internal water content. Recommended order configurations prioritize Timports crates (Large, Medium, Standard) to fulfill main volumetric demand, adding Boxes of Beech (in 12, 24, or 48 box tiers) only when needed for FLAMECO range selections, in compliance with HETAS and Defra Ready to Burn standards.