Chimney Fires Destroy Homes. Creosote buildup may not look dangerous, but it ignites at a mere 451 degrees F, and once it starts burning, it expands like foam sealant. In less than a minute, it ...

Key Takeaways. The average cost for chimney cleaning ranges from $120 to $390.Still, it can vary from as low as $90 for well-maintained chimneys to as high as $5,000 for extensive cleaning.; Costs ...