PENTAIR INTELLIFLO VARIABLE SPEED PUMPENERGY STAR Certified: meets strict energy efficiency criteria set by the U. S. Environmental Protection Agency and the U. S. Department of Energy. 8 programmable speed settings and built in timer to ensure the pump runs at optimum speed and duration. Ultra efficient permanent magnet motor design reduces noise and vibration for greater efficiency and longer pump life. Dramatically quieter operation as low as 45 decibels about 4 times quieter than most