The CALIFORNIA AIR TOOLS 20015HP Ultra Quiet, Oil-Free and High Pressure Two-Stage Air Compressor is designed to be one of the quietest 1.5 Hp air compressors in the industry having only 70 decibels of sound. This high pressure 1.5 HP motor operates at only 1750 RPM creating less noise and less wear. This motor has been designed to increase duty cycle and allow for longer continuous run times. The Oil-Free Two-Stage Dual Piston Pump System is engineered for high performance and durability. The CAT-20015HP Air Compressor has a Oil-Free Dual Piston pump designed to have a life cycle before wear of 3000 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 Easy Start Valve feature allows for a easier start up using less starting amps. The Easy Start Valve releases a small amount of air from the pump at start up to produce a no-load condition allowing the motor to spin freely. This no-load start up requires less amps for a easier start up in cold temperatures. The large 20 Gallon Steel Air Tank with wheel kit makes it very easy to move around the jobsite, shop or garage. Designed for the person looking for High Pressure, High Air Flow, Less Service and Maintenance with at Least 30% Less Noise!.