Thanks Mark;

Just to extend that a bit . . . let's take your pump, which Inyopools shows as pulling around 9 amps @ 230V, or about 2KW if it runs at that load point.

Since your in Florida, let's assume an 8hours/day run time for 6 months, and a 2 hour /day run time for winter months. That's 1825 hours per year, or 3650 KWH. At around $0.10 / kwh, annual operating cost will be $365, and your savings (with a 5% reduction in electrical usage) will be about $19 per year.

On the other hand with a 2 speed pump, running on low 12 hours/day and 6hours/day at 1/6 the current used on high, your runtime KW would be about 0.35KW, and your annual hours would be 2920. That works out to about 1,000 KWH/year for a savings of $265 per year . . . and a MUCH quieter pump.