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Maintaining a Wood Burning Fireplace The crackle of a fireplace that is wood-burning is a fantastic way to warm up the interior of a house. If you have one, it is vital to maintain it regularly to avoid the risk of dangerous build-ups of creosote. Airflow can be controlled with a damper which is a crucial element of maintaining efficient combustion. The type of firewood used can also be a factor, with hardwoods like oak and ash producing less creosote than softwoods. Energy Efficienc