I'm trying to pull the trigger on a new variable speed pump to replace my Sta-Rite Max E Pro 1.5 hp pump that rattles like crazy and is killing me in electric usage.
I'm thinking the Pentair Intelliflo 011018 3hp max pump. But I've been told I can't use it because I have 1.5" return plumbing. However the current setup has the (2) 1.5" return lines combined into a 2" line about 18" ahead of the inlet to the pump. All of the plumbing around the equipment is 2" including to the filter and back out. Pentair has a new i1 pump that has 1.5" plumbing, is the same pump with a smaller impeller and reduced amperage somehow, but this one would require me to change fittings to attach to the current 2" inlet and outlet. It would be very nice to just put the 3hp pump in and go. I have a relative down the street who has one and it is fantastic.
The local Leslie's manage thinks no problem, just hook up the 3hp, will be just fine, but a local pool guy I know said the plumbing will be an issue, possible cavitation, ... .
Any ideas or thoughts much appreciated, I simply have to get this thing done, current pump is running me like $200+ per month at my .36 kwh rate at the high tier which I get to pretty quickly. (Yes, I'm looking at a solar power system, just haven't figured out best way to do yet). I think the VS pump might save me $100+ per month which will be a pretty quick payback.
Thanks, Luther(Chris in Central CA)