What is Optimum flow rate for solar pool heater?

The optimum flow rate for a solar pool heater typically ranges from 4 to 6 gallons per minute (GPM) for every 10,000 BTUs of heating capacity. This ensures efficient heat transfer while allowing the solar collector to effectively absorb solar energy. Too high a flow rate can reduce the heating efficiency, while too low can lead to insufficient circulation and inadequate heating. It's essential to consult the specific manufacturer's guidelines for the best performance.