http://www.srpnet.com/energy/powerwise/poolpumpfaq.aspx#79

FYI: AZ law change as of Jan 1st 2012. Any new motor installed on pool equipment must be “Energy Efficiency Pump/Motor” (@ more than double the price of old motors). Sunrise Pool Care is now “Certified” by SRP & APS as intaller/calibration of the new motors so consumers can qualify for rebates offered. The dollars $ you save in electric over 1 year is staggering.

2-Speed

Variable Speed