Answer: Yes
Explanation: Yes, they are also now required in Arizona .. (But I will still install a single speed motor for around $350)
Arizona Pool Pump Law-Title 44-New Jan 2012 Regulations
February 2, 2012
If you own an Arizona home with a swimming pool you’ll want to be aware that the Arizona Legislature recently passed Title 44 that requires new energy-efficiency standards for residential pool pumps, pool pump motors and portable electric spas. This new legislation went into effect January 1, 2012.
The new Arizona law doesn’t mean you have to run out and change your in-ground pool and spa motor immediately, but it does require any newly installed pumps that are at least one horsepower or greater to meet the new standards. Dual-speed pumps will be the minimum efficiency for pool pump installations moving forward, and inefficient single-speed pumps will no longer be allowed.
By requiring the change on all pool pumps over one horsepower or greater, the new regulation is thought to be something that will ultimately help homeowner’s save money over time.