Kaeser introduces its new Airtower compressor packages. These competitively-priced models combine a rotary screw air compressor, storage tank and dryer in one durable and compact unit. Designed for light industrial and commercial workshops, Airtowers are available in 4-, 5- and 7 -hp models and deliver up to 28 cfm at pressures from 80 to 217 psig. The industrial-grade, energy efficient Sigma Profile airend provides more air with far less noise and vibration than piston compressors. The vertical receiver tank with automatic drain.