Screw Air compressors was formed when Holman merged with BroomWade to produce "an organisation with the resources to compete effectively in world markets.... the name of the group was the International Compressed Screw Air compressors.

Most Screw Air compressors either are reciprocating piston type, rotary vane or rotary screw. Centrifugal compressors are common in very large applications, while rotary screw, scroll,[7] and reciprocating air compressors are favored for small and medium sized applications.