Solar Water Heater Pump
Size circulation pumps and estimate running costs for your solar water heater. Enter collector area, vertical head, and your electricity rate.
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Well Pump Power Requirements Calculator
Estimate running and starting watts for your submersible well pump. Size generators and breaker circuits using total dynamic head and efficiency.
Guide
What size generator do I need for a well pump?
Why the generator is sized by the pump's starting surge (2.75× running watts), a horsepower-by-horsepower table from this calculator, and how well depth and pressure move the answer.
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