Independent research conducted by Kiwa on behalf of the Stove Industry Alliance (SIA) has shown that modern clean burning stoves, designed to meet the new Ecodesign requirements, will reduce particulate emissions by 90% compared to an open fire and by 80-84% compared to an old stove.
This confirms the European wide understanding that Ecodesign stoves will lead to improved air quality. DEFRA is using the introduction of Ecodesign to reduce emissions from wood burning in the UK. The stoves were tested at their nominal operating level and also when turned down to reflect the burning cycle of a stove at start and finish. Open fires and oId stoves have increased emissions when turned down whereas the emissions from Ecodesign stoves reduce when turned down. The 84% reduction is during the turn down period, when traditionally the possibility of emissions is at its highest.
Kiwa tested an open fire, a stove from 10 years ago and a stove designed to meet the stringent emission levels in Ecodesign. The tests covered the emission of particles, other carbon gases (OCG) and NOx, which all showed significant reductions.
The SIA’s main manufacturers will ensure that all newly-designed wood burning stove models will meet Ecodesign environmental standards for particulate emissions, from now on. Ecodesign is the European Union’s programme for lowering emissions across Europe. On 14th October the member countries agreed on the emission limits for biomass appliances including wood burning stoves. This part of Ecodesign is known as Lot 20. The legalisation is due to be implemented in 2022 and covers a broad range of emissions including CO2, NOx and CO.
Test results can be viewed on the SIA website at http://www.stoveindustryalliance.com/testresults.