A wood chipper noise level is high.
The process of suction, followed by the chopping and grinding action of the blades and the ejection of material, produces not only sound but also vibration, which the ear registers. Typically, gas powered wood chippers produce noise at a 110-decibel rate, five decibels higher than a chainsaw. While electric models are generally quieter than their gas powered counterparts, coming in at roughly 85 decibels, they are still considered noisy enough to warrant hearing protection. Prolonged use is common for workers, or even homeowners who simply rent a machine for the day.
Ongoing, regular use without hearing protection may lead to gradual hearing damage. Operators are therefore advised to use either ear muff or earplugs, preferably custom fitted.