The CALIFORNIA AIR TOOLS 20020CR-22060 Ultra Quiet & Oil-Free Continuous (100% Duty Cycle) 2.0 Hp Air Compressor is designed to be one of the quietest air compressors in the industry having only 77 decibels of sound. The Powerful "New" 200CR-22060 2.0 hp motor/pump operates at only 1700 RPM creating less noise and less wear. Continuous running up to 8 hours at 90 PSI and 12 hours at 40 PSI or below. The Oil-Free Dual Head Piston Pump System with Teflon Coated Piston Rings is engineered for high performance and durability. The CAT-20020CR-22060 Air Compressor has a Oil-Free Piston pump designed to have a life cycle before wear of 4000 hours of usage. 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 with no flat wheels is just the right size for a shop, warehouse or factory. Designed for people looking for Oil-Free Continuous Air Flow with at Least 30% Less Noise!