What Is a Decibel (dB) Rating?

A measurement of how loud a generator is while running, typically listed by manufacturers at a standard distance of 23 feet. Residential standby generators generally run in the 58–70 dB range — comparable to a normal conversation or a dishwasher. Lower dB ratings matter most when the installation site is close to a bedroom window, a patio, or a neighboring property line, since local noise ordinances in some cities can also factor into equipment placement decisions during permitting.