First off, this thing is quiet. It's not totally silent don't get me wrong, but I could easily mistake it for a idling push mower when it is running on eco mode and no louder than a small lawnmower when it is running full tilt. I have my generator hookup installed on the back porch and when running at full throttle, it is no more than a faint background noise when the doors are closed which is a HUGE improvement over the construction site level of noise the old generator produced when running.