The CALIFORNIA AIR TOOLS 10020DC Ultra Quiet & Oil-Free Air Compressor is designed to be one of the quietest 2.0 horse power air compressors in the industry having only 70 decibels of sound. The powerful 2.0 HP motor operates at only 1400 RPM creating less noise, vibration and creating less wear. The Oil-Free Dual Piston Pump System is engineered for longevity, high performance and durability. The SP-9421 Motor/Pump is tested for a minimum pump life of 3000 hours before service. 30% more life before repair. The large 10.0 gallon steel air tank is only 91 lbs. The Air Dyer is specially designed to remove the water vapor from the air to protect sensitive tools and machinery.  To dry the air from the air compressor an After cooler and Dryer are utilized. The after cooler 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 Dyer. This air compressor is ideal for anyone working inside (office, shop, store, warehouse or home) where noise is a major issue. This Ultra Quiet & Oil-Free Air Compressor with built-in Air Drying System is designed for industries including Dental Office, Dental Milling, Dental Lab, Medical, Biotech, Laser, Restaurant, Manufacturing, CNC, 3D Printing and other specialized pneumatic systems with a need for Clean Dry Air.