Flickerflame 5kw LargeWood burning stove, 5kW ECODesign 2022, Smoke Control Area Exempt, 80. 4% Efficient, A+ Energy Rating, 14% Dust. Designed in the UK, these stoves are the most efficient of their size in the UK, together with the lowest emissions (Dust Particles). Rated Power: 5 kW Energy Rating: A+ Weight: 76 Kg Efficiency: 0. 804 CO (at 13% O2): 0. 1 Mean Flue Temp: 249C DIN Plus dust (at 13% O2): 14 Nmg m3 Mean CnHm (at 13% O2): 79 Nmg m3 Mean NOx (at 13% O2): 127