The A.O. Smith NEMA C-Face Pool Filter Motor works efficiently with its single speed design. With horsepower ratings from 1/2"P to 3HP, the NEMA C-Face Pool Filter Motor is Full-Rated and provides long lasting and trustworthy performance. Its Energy Efficient capacitor start is run using a ?Conservationist? motor for enhanced performance. Equipped with the ability to withstand ambient temperatures up to 50C and constructed with an open drip proof enclosure, the NEMA C-Face Pool Filter Motor is sure to last.