Air Compressor with Air Drying System & Automatic Drain 20040DSPCAD

Experience professional-grade air without the noise. The CALIFORNIA AIR TOOLS 20040DSPCAD combines a powerful 4.0 HP oil-free compressor with an integrated air drying system and built-in auto drain, all housed in a soundproof cabinet. At just 65 decibels, it’s among the quietest 4.0 HP units on the market — ideal for offices, shops, garages, or any workspace where quiet operation matters.

Key features that elevate performance

• Ultra-quiet operation: 65 dB with a dual-motor setup and soundproof cabinet reduces disruption.
• Oil-free dual piston pump: cleaner air for better tool performance and lower maintenance costs.
• Two 2.0 HP motors running at 1680 RPM: less vibration, longer motor life, and smoother operation.
• 20-gallon steel air tank: substantial reserve for consistent tool performance and shorter cycle times.
• Air drying system: aftercooler and dryer with activated alumina desiccant (4000-hour life) removes moisture and protects sensitive tools.
• EZ-1 Automatic Drain Valve (factory-installed): eliminates manual tank draining with an adjustable timer for drain frequency and duration.
• Pressure and flow: 12.80 CFM @ 40 PSI and 10.60 CFM @ 90 PSI, with a maximum of 130 PSI.
• Electrical specs: 220 Volts / 60 Hz / Single Phase; low amp draw at 14 A.
• Durability and life: SP-Motor/Pumps tested for a minimum 3000 hours before service; about 30% more life before repairs.
• Mobility and accessibility: sturdy steel cabinet with caster wheels and two latching doors for easy access.
• Dimensions and weight: 31" L x 46" W x 39" H; 370 lbs.
• Duty cycle and runtime: 70/30 duty cycle with a 150-second fill from empty to full and a 40-second recovery from 100 PSI to 130 PSI.

Why this unit stands out

Air quality matters for tool longevity. The integrated aftercooler and dryer reduce moisture and contaminants before air reaches your tools, reducing corrosion and helping maintain consistent performance. The oil-free design minimizes maintenance while delivering reliable, clean air for spray guns, nailers, impact wrenches, and other pneumatic equipment. The cabinet’s acoustic insulation and multiple exhaust fans keep temperatures down, preserving components and keeping noise to a minimum even under heavier workloads.

Who benefits most

Ideal for offices, shops, stores, warehouses, or home garages where space is limited and noise is a concern. It’s well-suited for spray finishing, sanding, and general pneumatic work that benefits from dry, clean air and consistent CFM at multiple pressures.

What’s included and practical usage tips

• Includes a factory-installed EZ-1 Automatic Drain Valve for hands-off moisture management.
• Prepare for 220V outlets, ensure adequate space for cabinet access and air circulation.
• Use the 20-gallon tank to handle short bursts of demand and smooth out tool performance during continuous operation.
• Leverage the 150-second fill time and 40-second recovery to plan cycles around peak tool usage.

Documentation and manuals are available for the EZ-1 Automatic Drain Valve and related components.