Hayward HCP3400VSP 230-volt EcoStar C Variable Speed Single Phase Pump EcoStar C variable speed pump is most energy efficient variable speed pump at any speed Hydraulic design moves water more efficiently, operating at lower speeds to minimize noise save pool operators up to 90 percent on energy costs Comes with interchangeable bases to allow easy retrofitting into existing pipe-work Large rib less basket for extended time between cleaning Speed ranges from 600-3450 rpm and single phase 230-volt voltage