Pump Flow Rate Formula:
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The Hayward Pool Pump Size Calculator helps determine the appropriate pump flow rate needed for your swimming pool based on pool volume and desired turnover time. Proper pump sizing ensures efficient water circulation and filtration.
The calculator uses the pump flow rate formula:
Where:
Explanation: The formula calculates how many gallons per hour the pump needs to move to completely turn over the pool water within the specified time frame.
Details: Correct pump sizing is essential for efficient pool operation. An undersized pump won't properly circulate and filter water, while an oversized pump wastes energy and can cause excessive wear on pool equipment.
Tips: Enter pool volume in gallons and desired turnover time in hours. Typical turnover times are 6-8 hours for residential pools. All values must be positive numbers.
Q1: What is the ideal turnover time for a residential pool?
A: Most residential pools require 6-8 hour turnover times for proper filtration and water quality maintenance.
Q2: How do I calculate my pool volume?
A: For rectangular pools: Length × Width × Average Depth × 7.5. For circular pools: π × Radius² × Average Depth × 7.5.
Q3: Should I consider other factors when selecting a pump?
A: Yes, also consider pipe size, filter type, number of water features, and total dynamic head (TDH) for complete pump sizing.
Q4: What's the difference between GPH and GPM?
A: GPH is gallons per hour, GPM is gallons per minute. To convert GPH to GPM, divide by 60.
Q5: Can this calculator be used for commercial pools?
A: Yes, but commercial pools typically require faster turnover times (2-4 hours) depending on usage and health department regulations.