Solar Pump Sizing Calculator for OKU Performance+™ Systems

This calculator will help you size up a conventional mains solar pump for your independent or booster/retro OKU Performance+™ solar pool heating system. You can use this calculator to simulate various pump sizing choices and their respective effects on collector efficiencies and energy savings.

For our PoolMasterPro™ PVC strip systems please use the pump sizing calculator here.

† Note: this calculator sizes pumps for independent (or booster) systems only, manual systems don't have a choice on pump power as they are run using the main filter pump which is sized to the pool's volume.
** Include all pipe runs from the pool and to the roof and back again.
§ If electrical energy usage is your priority, choose a low flow rate, the collector efficiency loss can be compensated for with a larger collector.
‡ Daily pool water turnovers less than 50% will require you to run your filter pump in the afternoon to help mix the warm water deeper into your pool. Turnover rates and flow rates greater than 250% and 12 L/min/m² are not only a waste of electricity but may over-pressurise panels.