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Clinker - Definition of a Clinker

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Question: Clinker - Definition of a Clinker

What is a wood ash clinker? Why are clinkers a concern?

Answer: A clinker is an incombustible fragment that can be found in ash residue after burning heating fuels such as coal or wood. In relation to burning wood for heat in a wood stove or fireplace, a clinker looks like a chunk of ash, and is composed of wood residue and ash. The concern is that clinkers can contain live or active spark.

When cleaning/removing the ash build-up from the fire box of your stove or fireplace, clinkers in the ash may appear to be cold and harmless. However, clinkers can harbor live ash which can re-ignite when introduced to the air. For this reason, always use a metal pan or pail to remove the stove ash and dispose of all ash carefully.

More About Burning Wood for Heat:

Heating With Wood
Best Woods to Burn for Heat
Heating Resources
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