Hearing Damage
The noise of 2-stroke leaf blowers for the operator is in the 90-115 dB range. Anything over 85 dB is known to cause irreversible hearing loss after just 2 hrs. The noise of electric blowers is in the 59-65 dB range.
Quality of Life
Because the noise gas-powered leaf blowers produce is high-decibel and low-frequency, it travels far and through windows and walls, making their use a nuisance to neighbors and passersby.