Capacities: from 10 to 4,800 scfm Pressures: up to 250 psig Highly efficient air-cooled aftercoolers from Kaeser are an economical way to remove water vapor and cool compressed air to safe, usable levels for many applications. They also prepare the air for further filtration and drying. Compressed air is cooled to within 5°F to 20°F of the ambient temperature, and as the air cools, up to 80% of the water vapor condenses to a liquid.