LAMMA 2009: Viadus wood boiler

Marketed in the UK by Manco Energy and built in the Czech Republic, Viadus woodwaste boilers have an output of about 26kW (or 88,000btu) – enough to heat a large 3-4 bedroom house or workshop.

A clever but simple thermostat arrangement connected to the main vent by a chain increases or limits airflow to boost or reduce heat output. The stand-alone burner costs £1500, while the full unit with pressurised heating and hot water system takes the price to £5500. The whole rig can be supplied in a forklift-able cabin built to match the surrounding buildings for £10,000.