A straightforward way to turn your workshop's wood offcuts into free heat. The WT2 is sized for smaller joinery and craft workshops up to around 2,500 ft², with a compact footprint and minimal installation complexity.
Typically chosen by
Small joinery or craft workshops looking to offset heating costs by burning their own wood waste
Businesses with limited floor space who need a heater with a modest footprint
Workshops heating a single unit or bay up to around 2,500 ft² where a larger WT model would be over-specified
This is an approximate guide — actual coverage will depend on insulation quality, ceiling height, and building fabric. IWM can help you assess whether the WT2 is correctly sized for your space.
Heat Output
25 kW / 85,300 BTU/hr
At 25 kW this is a direct warm-air unit — heat is delivered into the workshop space rather than via wet radiator circuits, so placement and any ductwork runs need to be planned at installation stage.
Fuel Consumption
200–350 kg of wood waste per week
Whether your waste output matches this range is worth checking before specifying — if your workshop produces significantly more or less, a different model in the WT range may be a better fit.
Thermostatic Control
Yes — fully thermostatically controlled
The thermostat regulates burn rate automatically, so the heater maintains a consistent temperature without manual adjustment throughout the working day.
Approximate figure — dependent on insulation, ceiling height, and building construction.
Heat Output
25 kW / 85,300 BTU/hr
Air Volume
2,730 m³/hr
Fuel Consumption
200–350 kg of wood waste per week
Consumption range reflects variation in waste type, moisture content, and heating demand.
Fuel Types Accepted
Uncontaminated softwood and hardwood timber offcuts
The WT2 is designed for clean, dry wood waste only — it does not carry the exempt appliance status required to burn chipboard or MDF; if your waste stream includes composite board, the WT5 or above should be considered.
Thermostatic Control
Yes
Unit Dimensions (L × W × H)
1,695 mm × 950 mm × 1,000 mm
Allow additional clearance around the unit for safe loading access and flue connection; confirm exact clearances with your installer.
Weight
310 kg
Electrical Supply Required
Single phase, 13 A
Standard single-phase supply — no dedicated 3-phase circuit required, which simplifies installation in most workshop settings.
Flue
Stainless steel flue sold per metre; maximum recommended ductwork height 6 m
Flue runs above 6 m require prior discussion with your installer due to health and safety requirements.
DEFRA Approval
Yes — DEFRA approved
DEFRA approval confirms the unit meets clean air standards; however, the WT2 does not hold full exempt appliance status for composite board materials, so check your local smoke control area status and waste type before specifying.
Warranty
Contact IWM to confirm
Warranty terms were not published by the manufacturer at time of writing — speak to IWM for current details.
Your workshop is a single unit or bay up to around 2,500 ft² and does not require zoned or multi-area heating
Your wood waste output sits broadly in the 200–350 kg per week range — enough to fuel consistent heating without surplus
Floor space is limited and you need the most compact option in the WT range, with single-phase electrical installation and no specialist wiring
Consider an alternate model if...
Your workshop exceeds 2,500 ft² — the WT5 (up to ~4,000 ft²) or WT10 (up to ~7,500 ft²) will be more appropriately sized and avoid the unit running beyond its design capacity
You produce significantly more than 350 kg of wood waste per week — the WT10 (800–1,250 kg/week) or WT15 (1,000–2,000 kg/week) may be better matched to your waste volume
Your waste stream includes chipboard or MDF offcuts — the WT5 and above hold full exempt appliance status for composite board materials, which the WT2 does not
