I need a new pump for my pool. It is a 32k gallon pool with a Jandy RS Aqualink Rev QQ with Pool/Spa combo with 2" piping, Jandy membrane 420 filter and separate Polaris 280 with pump. The water fills and overflows the spa in its circulation; no solar or other attachments. There is currently an AO Smith Centurion 1.5 hp pump with a 1.5 service rating, running 12 hours per day with Pentair challenger head. I was thinking I could simply replace the current motor with a 2 speed, but don't know how would I properly select a 2 speed motor, knowing that I need enough flow to overflow the spa? Hence the consideration of a variable speed motor.
At this point I'm pretty convinced I can integrate the Intelliflo into the Aqualink RS and control it via the PDA or automation. The reason for considering the Intelliflo is the 3 hp rating, which I am hoping would give more power to the spa jets, and perhaps run with more power reserve, e.g. less strain.
My questions are these: Any perceived differences in reliability between the pumps? Has the integration with the Jandy worked out well overall? I spoke with Jandy and they say that the ePump has the best head flow of any pump. Would that make the flow rates between the epump and the Intelliflo VF similar despite the differences in HP? Are there any other reasons to go with the Intelliflo VF over the ePump?
Any advice would be appreciated.