The California Air Tools 10020DSPC Ultra Quiet and Oil-Free Air Compressor is designed to be one of the quietest 2.0 horse power air compressors in the industry having only 58 decibels of sound. The powerful 2.0 HP motor operates at only 1680 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. Large 10 Gallon steel air tank. The Air Dryer 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 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 sturdy large steel cabinet on caster wheels makes it easier to move and reduces the noise level. The interior of the cabinet is lined with acoustic sound proofing foam insulation to reduce the air compressor's noise and vibration. The 2 latching door handles allows for easy access to the air compressor. The 2 exhaust fans are designed to remove the air from the cabinet for a cooler running air compressor. This air compressor is ideal for anyone working inside (office, shop, store, warehouse or home) where noise is a major issue.