Hayward Super Pump® W3SP2621X25 Standard Efficiency Medium Head Up Rated Pump 2-1/2 HP 230V. Hayward Super Pump® medium-head pumps set the industry standard for excellence and value while also meeting DOE efficiency regulations. Their heavy-duty, high-performance motor and airflow ventilation provide quieter, cooler, more efficient operation for virtually any pool or spa, while their exclusive service-ease design offers quick 4-bolt access to all internal components. With these and other advanced features, it’s easy to see why Super Pump is the best-selling medium-head pool pump in the world.