The new Circ-Master pump from Aqua-Flo by Gecko takes 24 hour filtration to a new level, delivering the highest gpm of any recirculation pump in the spa industry. Higher gpm allows the Circ-Master to operate a high-flow heating system resulting in increased heating efficiency and filtration time. The Circ-Master also operates standard low-flow heating systems with increased reliability. This single speed pump is side discharge and is rated 1/15 hp and 120 V.