The CALIFORNIA AIR TOOLS 20020CR Continuous Run (100% Duty Cycle) Ultra Quiet & Oil-Free Air Compressor is designed to be one of the quietest 2.0 Hp air compressors in the industry having only 77 decibels of sound. The Powerful 2.0 HP motor operates at only 1700 RPM creating less noise and less wear. The CR Series of Ultra Quiet Air Compressor Motors have been designed to increase duty cycle and allow for longer continuous run times. Up to 8 hours of continuous running at 90 PSI and 12 hours at 40 PSI. The Oil-Free Dual Piston Pump System is engineered for high performance and durability. The CAT-20020CR Air Compressor has an Oil-Free Dual Piston pump designed to have a life cycle before wear of 4000 Plus hours. The Oil-Free pump allows for use in a variety of temperatures (cold starts) and uneven terrains (no oil in the pump). The large 20 Gallon Steel Air Tank is designed to store more air for higher demand air tools such as spray guns and sanders. Prefect for the shop or garage. The 2 (no flat) wheels makes moving this air compressor very easy. Designed for the person looking for Power, Air Flow, Less Service and Maintenance with at Least 30% Less Noise!