The A.O. Smith NEMA C-Face Pool Filter Motor works effectively with its single speed design. With a horsepower rating of 1/2"P, 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 50°C and constructed with an open drip proof enclosure, the NEMA C-Face Pool Filter Motor is sure to last. The NEMA C-Face Pool Filter Motor also meets California Energy Commission Appliance Regulations 2008 for ultimate efficiency.