California Air 20040DCADC 4 HP 20 Gallon Oil-Free Air Compressor

California Air 20040DCADC 4 HP 20 Gallon Oil-Free Air Compressor

Meet the California Air Tools Ultra Dry, Oil-Free & Ultra Quiet class with the CAT-20040DCADC. Designed to deliver exceptionally dry air with remarkably low noise, this 4 HP, 20 gallon unit compresses air while reducing moisture to keep sensitive tools and equipment performing at their best. Operating at a quiet 1680 RPM, it minimizes vibration and wear, so you spend less time maintaining your compressor and more time getting the job done.

Why this model stands out

• Oil-free Dual Piston Pump System for longevity and low-maintenance performance
• Aftercooler and Ultra Dry Air Dyer work together to remove 98% of water vapor from the discharge air
• Air quality certified ISO 8573 - Class 2.3.1, ideal for sensitive tools and precision work
• Ultra Dry, ultra quiet operation with only 75 dB sound level
• 20-gallon horizontal tank designed for stability and even air delivery
• Max pressure of 125 PSI with a rated CFM of 12.8 at 40 PSI and 10.6 at 90 PSI
• Shipped directly from the manufacturer in 1–5 days, with auto drain valve and air drying system included

Key specifications at a glance

• Motor: 4.0 HP
• Volts: 220
• Amps: 14
• Tank: 20 gallons, horizontal
• Max PSI: 125
• CFM: 12.8 @ 40 PSI; 10.6 @ 90 PSI
• Dry Air: 98%
• Lubrication: Oil-free
• Weight: 170 lb
• Noise: 75 dB
• Warranty: 12 months
• Accessory: Air Drying System, Auto Drain Valve
• Performance range PDP: -20°F to -51°F

Ideal uses and applications

Designed for industries that demand clean, dry air, including dental and dental labs, medical and biotech settings, laser operations, and precision processes like 3D printing. Because the air is dried to ISO 8573.1 Class 2.3.1 quality, it helps protect sensitive tools and machinery from moisture-related wear and corrosion. If you’re using tools continuously, consider sizing by CFM requirement and multiplying by two to estimate a continuous CFM rating for your equipment.

How it works

The unit pairs an oil-free dual-piston pump with an aftercooler and a dedicated dryer to condense and remove water vapor from the compressed air. Water vapor is collected by the aftercooler and directed to the air dryer, which dramatically reduces moisture in the output air—delivering consistently dry air for your tools and processes.

What’s included and setup

• Air Drying System and Auto Drain Valve are included for hands-off moisture control
• Ready to ship from the manufacturer in 1–5 days for faster project turnaround

With its combination of dry-air technology, oil-free operation, and quiet performance, the California Air Tools 20040DCADC delivers dependable air delivery for demanding applications while minimizing maintenance and noise.