20 HP Industrial Rotary Screw Compressors

Kaeser's 20 hp industrial rotary screw air compressors deliver the sustained output, energy efficiency, and quiet operation that busy shops and production floors demand. Available in multiple configurations, including standard, integrated dryer, variable speed drive, and all-in-one AIRCENTER packages, our SK, AS, and SFC series give you the flexibility to match your compressed air system to your exact application and space requirements. From a multi-bay auto body shop to a woodworking facility or a light manufacturing operation, a Kaeser 20 hp air compressor keeps your tools and processes running without interruption, backed by factory-trained service and the reliability Kaeser has built since 1919.

Energy-Saving Control:

The integrated refrigerated dryer in "T” units provides high efficiency performance thanks to its energy saving control. The dryer is active only when compressed air actually needs to be dried. This approach achieves the required compressed air quality with maximum efficiency.

Eco-Drain:

The integrated refrigerated dryer also features a zero loss Eco-Drain. The advanced level-controlled condensate drain eliminates the compressed air losses associated with solenoid valve control. This saves energy and considerably enhances the reliability of the compressed air supply.

Climate-Friendly Design:

In addition to energy-saving controls, our integrated dryers feature the new R-513A refrigerant with 56% lower global warming potential than common dryer refrigerants. Combined with our advanced heat exchanger design, we need only half the refrigerant — resulting in the most climate-friendly dryer possible.

A 20 hp rotary screw air compressor is ideal for small- to mid-size industrial operations, with enough output to run multiple tools or workstations simultaneously in a footprint that fits a shop or production floor without a dedicated compressor room.

Body shops run a demanding mix of pneumatic tools, including spray guns, DA sanders, air hammers, and blow-off wands, often across several bays at once. At 88 cfm (SK 20) to 97 cfm (AS 20) at 125 psig, Kaeser's 20 hp air compressors provide the sustained flow these environments require without the pressure fluctuations that disrupt finish quality. The SK and AS series operate at 68–69 dB(A), keeping the shop quieter than comparable older reciprocating units.

Cabinet shops, millwork operations, and metal fabrication facilities depend on consistent air pressure for CNC pneumatic feeds, clamps, nailers, and surface finishing. A 20 hp rotary screw air compressor meets the simultaneous demands of multiple stations that a smaller machine cannot, and the AIRCENTER configuration, with an integrated dryer, receiver tank, and optional filtration, keeps moisture out of the lines and maintains clean finished surfaces.

Production lines running pneumatic actuators, air-powered torque tools, or automated packaging equipment need an air supply that keeps pace with the process. Kaeser's 20 hp compressors run at 100% duty cycle, unlike reciprocating units that require rest intervals, making them the right fit for continuous shift operations.

Plastics processing, commercial printing, and general manufacturing shops often need pressure flexibility. The SK 20 and AS 20 series cover pressure ranges from 125 to 217 psig, giving operators options across applications without requiring equipment changes. For operations where demand fluctuates throughout the shift, the SFC 15 variable speed model adjusts output to match consumption rather than cycling on and off at a fixed speed.

Choosing the right 20 hp rotary screw compressor comes down to what happens after the purchase: how much it costs to run, how long it runs without issue, and how fast it gets back online when service is needed. We engineer our SK, AS, and SFC series to address all three realities, with measurable efficiency gains, a service-friendly design, and intelligent controls that protect your investment for the long term.

The airend is where efficiency is won or lost. Kaeser's SIGMA Profile rotors require approximately 10 to 20 percent less energy than conventional rotors of the same air delivery capacity. This is not a marginal gain. Over the lifecycle of a 20 hp air compressor running one or two shifts daily, that difference adds up significantly on the power bill.

In our systems design approach, KAESER chooses the components that work together in the most energy efficient way possible. Each and every component — from inlet filter to discharge connection — has been carefully designed with performance in mind. In fact, both the SK and AS series are up to 30% more efficient than the competition. With KAESER’s superior system controls, we guarantee an effective system with lower operating costs.

We build every Kaeser compressor with technicians in mind. All maintenance points on the SK and AS series are accessible from a single side, and windows in the access panel let operators check fluid levels and belt tension without opening the machine. The drive belt uses an automatic tensioning device that maintains consistent power transfer throughout its service life without re-tensioning adjustments. Fewer maintenance steps and longer service intervals mean less scheduled downtime and lower total cost of ownership.

SIGMA CONTROL monitors more than 20 critical operating parameters, shuts the unit down to prevent damage, signals when immediate service is required, tracks preventative maintenance intervals, and provides notice when PMs are due. Remote access via Ethernet and the built-in web server allows operators to check status and review operating data without walking to the machine. For multi-compressor installations, SIGMA CONTROL integrates directly with Kaeser's SIGMA AIR MANAGER 4.0 master controller for coordinated system-wide efficiency.

On T model units with integrated refrigerated dryers, Kaeser uses R-513A refrigerant, a modern refrigerant with 56% lower global warming potential than common dryer refrigerants, and an advanced heat exchanger design that requires only half the refrigerant charge of conventional units.

Kaeser's 20 hp rotary screw air compressors are available in multiple configurations, so the right fit for your shop or facility exists without compromise. Our compressed air system experts will assess your demand profile and installation conditions to identify the most efficient solution for your specific situation. Request a quote today or find your local Kaeser distributor to get started.