Every certified pool pump, plotted where it actually runs

What the spread is worth in money

Running the best-rated and the worst-rated in-ground pump in the detailed set on the same schedule: 10 hours a day at each pump's low-speed measured point, 2 at its high-speed point, 180 days, at 18.31¢/kWh.

Both are certified and both beat their class minimum. They are not the same size, so this is the cost spread across the certified range, not a like-for-like swap. Sizing comes first, which is what the turnover calculator is for, and the schedule above is this site's stated assumption rather than a measurement.

Best-rated certified in-ground pumps

Reported weighted energy factor from each pump's own record. The tick is the median across all 330 certified in-ground records.

What is here

1. Every certified pump, with its own numbers

   423 certified records; 63 carried in full detail with flow, head, rpm and watts at each measured point.

2. Cost arithmetic you can check

   The calculator shows the formula, every assumption, and the difference between a watt and a watt-hour. No hidden multipliers.

3. Sizing by flow, not by horsepower

   The turnover calculator works from pool volume and flow in gallons per minute, with the geometry spelled out.

4. Blanks stay blank

   Where the source publishes no value, such as a standby figure or a second speed point, the page says so rather than filling the gap.

• Specifications, October 17, 2026

  Pool Pump Weighted Energy Factor: What WEF Measures

  The pool pump weighted energy factor is gallons moved per kilowatt-hour on a standard test. What WEF includes, what it leaves out, and how to read it.