Multi-Fuel DEFRA Approved Stoves A multi-fuel DEFRA approved stove allows you to legally burn wood and some non-smokeless fuels in a UK Smoke Control Area. They often come with a continuous supply secondary combustion air to prevent the fuel from smoldering and producing nuisance smoke. A Defra Stove (sometimes known as a DEFRA Smoke Exempt Appliance) has been tested for le
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