Pentair 011511 WhisperFlo High Performance Energy Efficient Single Speed Full Rated Pump, 1/2 Horsepower, 115/208-230 Volt, 1 Phase The Pentair WhisperFlo single-speed full rated 1/2-horsepower high-performance pool pump is ultra-quiet Unique FunnelFlo diffuser and high-efficiency impeller maximize water flow and energy efficiency while minimizing turbulence and noise WhisperFlo costs less to operate, because it uses less horsepower to produce required water flow Oversized strainer basket extends time between cleanings; see-through lid makes inspection fast and easy Compatible with all cleaning systems, various filters and jet action spas; 1-year limited warranty