Carlyle screw compressor twin screw air compressor used rotary air compressor CARLYLE SCREW COMPRESSOR Carlyle screw compressor offers innovative, high-efficiency, patented rotor profiles as well as optimized housing geometry that provide outstanding efficiency and reliability. In addition, the Paragon model provides infinitely variable capacity from 100 percent to 25 percent for perfect load matching and superior seasonal energy efficiency. Carlyle compressor manufacturers have since invested in their own R&D programmes to produce new 'in-house' profiles, all based upon an initial concept now over 120 years old. At that time it was not possible to develop the idea any further because of the lack of manufacturing technology.