I have a 20k gallon pool, one skimmer, 3 jets and currently I am running a 3/4 HP single speed starite pump that sounds like it's ready to go sometime in the near-ish future. Right now, I am pulling 15 amps @ 120v of power for 8 hours a day and I want to get that down to the least amount of KW/h as possible to save money. I am willing to convert to a 230v and have actually been looking at the Pentair 011018 IntelliFlo 3HP motor. Reason thinking that even though the max flow rate of the DE filter I have is 106 GPM, I can in reality, run at a slower speed that should save more money than going with a Pentair SuperMax 1.5hp which would have to be at a higher constant RPM.
Am I wrong in my thinking or should I be going with a smaller Pentair?