Pentair 011018 IntelliFlo Variable Speed High Performance Pool Pump, 3 Horsepower, 230 Volt, 1 Phase - Energy Star Certified;

Traditional pumps operate at set, unchangeable speeds. Those speeds are almost always higher than required. As a result, they overpower the jobs they're assigned to do, which wastes energy. Intelliflo allows custom programming of optimum pump speeds for specific tasks such as filtering, heating, cleaning, spa jets and waterfalls. for virtually all applications, the optimum speed is lower than the preset, unchangeable speeds of older pumps. When water moves more slowly for longer periods, it helps reduce the occurrence of algae that forms more easily when water is pumped briskly and then allowed to rest for long intervals. Your filter works more effectively because it has more time to sift out particles from the water, and because particles aren't forced through the Filter media under needlessly high pressure. Automatic chemical dispensers and chlorinators also work better when water is kept moving.