Choosing the right swimming pool pump size is all about matching flow rate to your pool volume and plumbing, not just buying the biggest pump. Here’s a clear, step-by-step guide 👇
🧮 Step 1: Calculate Your Pool Volume
Use this formula:
📐 Pool Volume Formulas
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Rectangular pool
Length × Width × Average Depth × 7.5 -
Round pool
Diameter × Diameter × Average Depth × 5.9 -
Oval pool
Length × Width × Average Depth × 6.7
📌 Result = Gallons
🔄 Step 2: Decide the Turnover Rate
A turnover means circulating all pool water once.
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Standard recommendation: 1 turnover every 8 hours
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Some codes allow up to 12 hours
Flow Rate Formula
Example
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Pool size: 20,000 gallons
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Turnover: 8 hours = 480 minutes
➡️ 20,000 ÷ 480 = ~42 GPM
⚙️ Step 3: Account for Total Dynamic Head (TDH)
TDH = total resistance in your plumbing system.
Includes:
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Pipe length & diameter
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Number of elbows & valves
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Filter type
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Heater, chlorinator, solar, etc.
ROCKSOLAR SOLAR AC/DC swimming pool pump will not only help to keep your swimming pool clean but also save money for you by reducing your electricity bill. Click below link to see details of our offers of solar AC/DC swimming pool pumps.
https://rocksolar.io/collections/solar-dc-swimming-pool-pump