From https://www.swimmingpoolsteve.com/pag... this video explores a maximum efficiency 24 hour pool pump schedule for a variable speed pool pump - Specifically the 1.85hp Hayward Tristar 900 / SP3202VSP. By setting the program to utilize the maximum laminar flow from the pipe size you are using as the top speed you are sure to minimize the losses to friction and water turbulence in your plumbing. This is where most pool filtration schedules lose the majority of the energy efficiency. You generally do not need 100 or 120 GPM or more for peripheral items like heaters or salt systems, nor do skimmers and returns require this amount of flow to adequately skim the surface debris and return clean, filtered water back to your pool. In 1.5' plumbing the limit for laminar flow is 38 gpm, 2" plumbing is 65 gpm and 2.5" plumbing is 90 gpm. The size of the trunk line in your plumbing system will determine which of these you use as your "maximum" flow rate. The two slower speeds are chosen based on the peripheral items that your pool has. This schedule would likely work well for pools with heaters and especially electric heat pumps since 40 GPM should be enough for these to operate for most pools, and the long hours above 40 GPM in this schedule provide adequate time for the heat pump to operate. Finally, the lowest speeds of just over 20 GPM is enough for most salt systems to operate which means this pool can run the salt cell as much or as little as needed over the 24 hour period.

Maximum efficiency with minimum losses to friction and turbulence. This is just one example of an ultra-efficient pool filtration schedule. Ever pool will have unique variables to consider.

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