Chimney cleaning requires specialized brushes, extension rods, and safety equipment that most homeowners don’t have access to. More importantly, proper cleaning includes inspection for structural problems, creosote levels, and safety issues that require specific training to identify correctly.
DIY cleaning often misses dangerous problems and can actually make things worse if done incorrectly. You might remove some surface soot but miss the creosote buildup that actually causes fires. Professional chimney sweeps also carry insurance and know how to work safely on roofs, eliminating liability risks for you.
The cost of professional cleaning is minimal compared to the potential damage from missed problems, accidents, or improper cleaning. This is definitely one of those jobs worth leaving to professionals who have the right tools, training, and experience.