My Jandy JHPU2 2 HP circulation pump is making a lot of noise. Somewhat goes loud then softer every 45-60 seconds. I want to replace it with something more energy efficient and less noisy. I also think it is over sized for my application.
Pool is 25,000 gallons. This pump is for circulation only. There are 2 more Jandy pumps same model for waterfall and effects. And another Jandy 2.5HP for the spa. Polaris also with it's own booster pump. Note - I bought the house and pool was already installed and I'm guessing # of pumps and HP was the pool builders selling point. Pool and equipment about 6.5 years old.
So the circulation pump feeds a Jandy CL580 cartridge filter and AquaPure chlorine generator and then to pool. All lines are 2".
Since I don't need this pump to run at a higher speed to power anything else, I'm thinking I should buy a much lower horsepower pump that will turn water over once every 24 hours. Is one turnover per 24 hours the correct guideline? Looks to me a 1/2 HP pump would need to run 14 hours a day for 1 turn?
What advantages would a larger pump with 2 speeds and run on low speed offer?
My electricity is right now .12/kwh, but likely to be .15 this summer. I would consider VFD style pumps, but just do not see the cost justification. Unless payback period is under 5 years, then it's not for me.
Based on the above, I would appreciate any feedback with suggestions or pump brand/model recommendations.
I bought house 2 years ago and struggled with pool the first year. I found this site last spring, became a BBB convert and pool has looked great since!