Hi everyone,
I have a 18’ Round 4’ deep above ground. I need to replace the pump which is a 1HP Jacuzzi LRC. Eventually, I would like to add a heater, which will require me to move the pump and filter to the side of my house, but not for another year or two. I was told I would need a 1.5 HP so I ordered a Pentair Whisper Flow Energy Efficient 1.5 up rated pump. After more studying I learned this thing is WAY too big and am returning it.
As the setup is now, it is right next to the pool. From checking the vacuum and pressure readings, I calculated 28 feet of head (4’’mg and 10psi). Moving to the side of the house and adding the heater will add an additional 11 feet of head. I want to keep 40GPM at the very least.
I know I should just go with a 1HP above ground pump then replace it again when I install the heater.
I figure my current pump is similar to a 1HP Pentair Dynamo and has a similar performance curve. If I do go with an above ground pump, it will be that one. At 30FOH it would give me a flow of 70 GPM. Moving to the side of the house and adding the heater gets me to 40FOH. Which the Dyanmo can put out 49GPM@40FOH.
BUT…I really like the design and features of the whisper flow, and that it is quiet. A 1/2 horse full rated would give me 78GPM@30FOH and 60GPM@4FOH.
If this logic is correct, it seems like the perfect fit, but I thought the same thing about the 1.5WF.
My filter is a Hayward D.E. EC40AC. I also have a Hayward CL200 chlorine feeder.
Skimmer is a Hayward SP1091LX.
Everything is plumbed with 1.5 in Schedule 40 PVC. I plan install 2 inch after I move everything, and can replumb it with 2in now and upgrade the skimmer if need be.
It would be great if someone could confirm this or convince me the in ground WF is a bad idea. I want to learn, the more technical the better.
Thanks in Advance!
