Not as fast as the water-cooled pumps, but much more convenient and doesn't vibrate anything like as badly so actually quieter with the door closed (the water-cooled ones vibrate the whole house! The fans are loud, but I prefer that to the vibrations as you can just shut the door. Seems well built. Analogue shut off is not very accurate or easy to judge, would be better with a more accurate digital one but I usually wait and shut it off manually anyway using the bottle gauge so wasn't a deal breaker. Over all great value, would recommend for filling PCP rifles and topping off bottles.