Variable speed pump meets new Department of Energy (DOE) federal standards for swimming pools pumps. 1 year Warranty. Water-cooled permanent magnet motor technology and an enclosed design ensures this pump runs cooler, stays dry, and is built to last. For in-ground pools with 2-in union-style fittings, the new PRO VS II pool pump meets new DOE standards that become effective July 2021. Exceptionally quiet compared to single and dual speed pumps. Energy Star rated and extremely quiet during running speeds, this pump does require wiring by a licensed electrician. The PRO VS II comes with a timer function with adjustable RPMs for 4 periods per day and has an easy programming platform. Weighted Energy Factor of 10.34. With variable speed technology, you can forgo the stress of single or dual speed pumps and enjoy your pool for what it's supposed to be: safe, sparkling, and fun.