I have done some digging and this idea came from California. It is certainly the energy code there. The question is whether this is a federal law, an incentive rebate or just a rumor that a pool company guy embraced to make some extra money. The pump is about 2.5 times as much.
Judy is going to check with the pool (health) inspector tomorrow to see if it is even legal on a commercial pool. That would be my first concern because that guy can throw a red tag and shut you down. You certainly would not want to be several hundred dollars into this and find out you still have run your pump at high speed all night anyway.
If they can find a compromise I can see how this would save a boat load of money. These pools are only licensed to operate during daylight hours.
