I haven't metered it or nothing, but I would say yes, or it comes damm close-lol...I just leave it on for all night w/ an empty barrel outside and when I wake up, it's full-and usually running over-lol...you should know that production seems to be less than half when it is REAL cold outside...and seems to be alittle better when it is REALLY hot--and don't be dumb like me and leave it outside when it's gonna be freezing cold all night-lol