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Internet # 307850348

Model # 20040DCADC

Store SKU # 1003933321

20 Gal. 4.0 HP Ultra-Quiet, Ultra Dry and Oil-Free Electric Stationary Air Compressor with Air Dryer and Auto Drain

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  • Designed as one of the quietest air compressors in the industry
  • Oil-free pump 3000 hours before service
  • Air dryer and aftercooler for dry air delivery
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Product Details

About This Product

The California Air Tools 20040DCADC Ultra Quiet, Ultra Dry Oil-Free Air Compressor with Air Drying System is designed to be 1 of the quietest 4.0 HP air compressors in the industry having only 75 dB of sound. The Powerful two 2.0 HP motors operates at only 1680 RPM creating less noise and less wear. The CAT-20040DCADC Air Compressor has a Oil-Free Dual Piston pump designed to have a life cycle before wear of 3000 Plus hours compared to other comparable air compressors with life cycles of 1500-hours or less. The large 20 Gal. Steel Air Tank is just the right size for shop or garage. The Air Dryer is specially designed to remove up to 98% of the water vapor from the air to protect sensitive tools and machinery. PDP performance range (-20°F to -51°F). Air Quality: ISO 8573-Class 2.3.1. To dry the air from the air compressor an Aftercooler and Dryer are utilized. The aftercooler is a heat exchanger for cooling the discharge air from the air compressor. The water vapor from the compressed air is condensed into liquid form and pushed into the Air Dryer. The easy to replace Spin-On Air Dryer Cartridge has a regenerating High-Temperature Molecular Sieve Desiccant to dry the air. This cartridge dryer has a life of 2-years before replacement. The California Air Tools EZ-1 Automatic Drain Valve has been designed to eliminate manually draining your air compressor air tank. Designed for the person looking for Power, Dry Air and Air Flow with at Least 30% Less Noise.


  • Ultra-quiet-only 75 dB
  • Ultra-dry-up to 98% dry air
  • Oil-free pump for less maintenance and costs
  • Powerful 4.0 HP
  • 20 Gal. steel air tank 170 lbs.
  • 12.80 CFM at 40 psi and 10.60 CFM at 90 psi
  • Maximum pressure: 125 psi
  • One 1/4 in. universal (industrial) quick connector
  • Low amp draw - 14 Amp
  • 220-Volt 60 Hz
  • Time to fill the tank-only 150-seconds
  • Extra-long pump life of over 3000-hours before service
  • Low vibration-motor speed of 1680 RPM
  • Easy to remove desiccant air dry canister
  • Factory installed automatic drain valve
  • 1-year limited warranty
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 307850348

Model # 20040DCADC

Store SKU # 1003933321


Dimensions: H 30.5 in, W 37.1 in, D 22 in


Product Depth (in.)

22 in

Product Height (in.)

30.5 in

Product Width (in.)

37.1 in


Air Delivery SCFM @ 40PSI


Air Delivery SCFM @ 90PSI


Amperage (A)

14 A

Application Use

Air Brushing, Blow Cleaning, Bolting, Brad Nailing, Cutting, Drilling, Finish Nailing, Grinding, HVLP Painting, Hobby Nailing, Hobby Painting, Inflation, Roof Nailing, Sanding, Spraying, Stapling, Surface Prep, Wrenching

Battery Amp Hours

No Battery

Charger Included

Charger Not Included

Compressor Tank Capacity (gal.)

20 gal

Compressor Type


Compressor Volume Rating


Compressor/Air Tool Features

Automatic Start/Stop, Oil Free Compressor, Tank Pressure Gauge, Universal Quick Connectors, With Dryer



Decibel Rating (Outdoor)

75 dBA

Horsepower (hp)

4 hp


No additional components or accessories are included

Lubrication Type


Maximum Pressure (PSI)

125 PSI

Number of Total Batteries Included


Phase Type

1 Phase



Power Source


Power Type

Corded Electric

Product Weight (lb.)

170 lb





Stage Count

Single Stage

Tank Material


Tank Style


Tools Product Type

Air Compressor

Voltage (V)

220 V

Voltage (v)


Warranty / Certifications

Certifications and Listings

No Certifications or Listings

Manufacturer Warranty

1 Year Limited Warranty

Questions & Answers

Q:Can this unit be used with 110 volt outlet with adapter? Or is it strictly 220v?
by|Aug 11, 2023
1 Answer
Answer This Question

A:  Hello. This unit is 220 volts only (220 volts, 60 Hz, Single Phase). Complete 20040DCADC Product Details are here: https://www.californiaairtools.com/air-dryer-ultra-quiet-oil-free-air-compressors/cat-20040dcadc/

by|Aug 12, 2023
    Showing 1-1 of 1

    Customer Reviews

    5 out of 5

    • 5 out of 1 reviews
    • 100% recommend this product
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    Showing 1-1 of 1 reviews
    Runs smooth and have had 2 for about 6 months with no problems yet. Service dept answered questio...
    Runs smooth and have had 2 for about 6 months with no problems yet. Service dept answered questions reasonably well.
      • Recommended
      Showing 1-1 of 1 reviews