OER Fireplaces OER 5 MultiFuel 5KW Wood Burning StoveOER 5 MultiFuel Wood Burning Stove Log Burner The OER 5 Multifuel Stove is an excellent option for those looking to build a household with less impact on the environment. With modern technologies creating low cost and smokeless solid fuels, these burners are compatible with all solid fuels including wood, coal, pellets and eco logs. Overview DEFRA Approved and Eco Design ready Reliable steel body & cast door combination A+ Efficiency rated Approved