The E71-II VSP (1.1 THP) variable speed swimming pool pump is another example of Speck Pumps innovations to meet world energy and environmental challenges. Perfect for above-ground and on-ground pools. Benefits of Variable Speed Pump Energy efficiency One of the biggest reasons that homeowners should consider variable speed pumps is due to their fantastic energy efficiency. This variable speed pump will cut energy costs by up to 80% when compared to traditional two-speed pump designs that use more energy than is necessary to circulate and filter out pool water. Whether you're running a pool cleaner, a waterfall, variable speed pumps will only use the amount of energy required to get the job done in the most efficient way possible. Long lifespan Variable speed pumps are a fantastic investment to help reduce home energy costs, but they also boast a much longer lifespan than two-speed designs. Variable speed pumps produce less heat and vibration than induction motors, which in turn reduces the regular wear and tear that comes with year-round use. Most of these pumps make use of internal cooling fans, which can help the pump run at peak efficiency and reduce wear that may occur with consistent use. Quiet operation The drone of a pool pump is a fact of life for many homeowners, but variable speed pumps make that a thing of the past. They rank among the most quiet pool pumps ever built. Now you won't have to listen to your pool pump run all night long and you can sleep soundly in knowing that your investment is saving you money!