How to Size a Well Pump for Your Home? | GPM and Head First

Kitchen Guide / By

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The right well pump for a home is chosen from two numbers: peak demand in gallons per minute and total dynamic head in feet.

For the full breakdown, see our best 1/2 HP Well Pump guide.

A pump sized too small leaves you with a weak shower every time a second tap opens. One sized too large can outrun the well, drag the water level down, and wear itself out cycling on and off. Both failures trace back to the same shortcut: choosing by horsepower instead of by the work the pump actually has to do.

You don’t need an engineer to figure out how to size a well

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Mo Maruf

Mo Maruf

Founder

I am a dedicated home cook and appliance enthusiast. I spend hours in my kitchen testing real-world storage methods, reheating techniques, and kitchen gear performance. My goal is to provide you with safe, tested advice to help you run a more efficient kitchen.