Flickerflame 5kw MediumWood burning stove, 5kW ECODesign 2022, Smoke Control Area Exempt, 85. 1% Efficient, A+ Energy Rating, 13% Dust. Designed in the UK, these stoves are the most efficient of their size in the UK, together with the lowest emissions (Dust Particles) available today. Rated Power: 5 kW Energy Rating: A+ Weight: 64 Kg Efficiency: 0. 851 CO (at 13% O2): 0. 08 Mean Flue Temp: 218C DIN Plus dust (at 13% O2): 13 Nmg m3 Mean CnHm (at 13% O2): 70 Nmg m3 Mean NOx