20 HP Rotary Screw Air Compressors

A 20 HP rotary screw air compressor is an industrial compressed air machine that uses two interlocking helical rotors to compress air continuously. At 20 HP, it delivers sufficient airflow for small-to-medium manufacturing, auto shops, woodworking facilities, and similar applications. Gardner Denver's L Series and LRS Series both include models covering the 20 HP output range.

A 20 HP rotary screw air compressor typically delivers between 80–100 CFM depending on operating pressure and model configuration. Gardner Denver's L Series covers a broad range from 13 to 1,604 CFM across its full lineup, with 20 HP models falling within the lower portion of that range, making them well-suited for moderate continuous-duty applications.

Choose fixed speed (L Series) if your air demand is relatively constant throughout the day. Opt for variable speed drive (LRS Series) if your demand fluctuates — VSD models save 30–50% in energy costs by automatically adjusting motor speed to match actual air consumption, making them ideal for facilities where compressed air usage varies significantly during shifts.

Gardner Denver's L and LRS Series 20 HP models operate across a pressure range of 75–190 PSIG, offering flexible configuration for a variety of industrial applications. Most general-purpose shop and manufacturing environments operate comfortably between 100–125 PSIG, while specialized applications may require higher pressures within this available range.

Gardner Denver's LRS Series variable-speed models operate as quietly as 63 dBA — comparable to a normal conversation — thanks to sound-insulating enclosure panels. Fixed-speed L Series models also feature whisper-quiet operation. These low noise levels eliminate the need for a dedicated compressor room, allowing installation near the point of use on the shop floor.

Gardner Denver's 20 HP rotary screw air compressors are backed by ISO 9001 certification for quality management, cULus listing for electrical safety compliance, and ASME certification for pressure vessel standards. These certifications provide assurance that the equipment meets rigorous safety and quality requirements for industrial use.

Comp-Air Ohio offers a Platinum 10-Year Extended Warranty on airend components and Platinum+ full-package service agreements, where factory-trained technicians handle all scheduled maintenance, covering wear items and package components. Gardner Denver has engineered compressed air solutions since 1859, and Comp-Air Ohio has provided trusted local service across Northern Ohio since 1977, with factory-trained authorized distributors available across America.