Profile: Kaeser is a single source solution for air system needs. We manufacture rotary screw compressors featuring the proprietary, energy-efficient Sigma profile airend, oil-less reciprocating compressors, Omega rotary lobe blowers and Omega-paK blower packages and vacuum packages. We also offer a complete line of refrigerated and desiccant dryers, condensate management systems, plus a variety of related products. Each of our rotary screw compressors features the revolutionary, new Sigma-Control system with inbuilt PC.