This tool helps you determine the right pump size for your well based on your specific needs.
Well Pump Size Calculator
This calculator helps you determine the necessary size of a well pump based on various parameters such as well depth, well yield, desired pressure, distance to the house, required daily flow, and head loss per 100 feet.
How to Use
- Enter the depth of the well in feet.
- Enter the well yield in gallons per minute (gpm).
- Enter the desired water pressure in pounds per square inch (psi).
- Enter the distance from the well to the house in feet.
- Enter the required daily water flow in gallons.
- Enter the head loss per 100 feet of water pipe in feet.
- Click the “Calculate” button to see the recommended pump size in horsepower (HP).
How It Calculates
The total dynamic head (TDH) is calculated by summing the well depth, the equivalent head from desired pressure (pressure * 2.31), and the head loss due to pipe distance. Then, we determine the pump size by considering the total dynamic head and the flow requirements, normalized by the well yield.
Limitations
Please note that this calculator provides an estimate for pump size. It assumes steady parameters and does not account for complex factors such as varying flow rates, efficiency of specific pumps, or other site-specific conditions. It’s always best to consult with a professional for precise requirements and installation.
Use Cases for This Calculator
Calculate Gallons per Minute (GPM) Required
Determine the suitable well pump size by inputting the required gallons per minute (GPM) for your water usage. The calculator will then recommend the pump size that can meet your household or commercial needs efficiently.
Estimate Total Dynamic Head (TDH)
Input the total dynamic head (TDH) of your pumping system to accurately determine the well pump size required for optimal performance. The calculator will factor in the vertical lift, pipe friction, and other components affecting TDH.
Choose Pump Horsepower (HP) Based on Depth
Specify the depth of your well to calculate the appropriate pump horsepower (HP) needed to lift water effectively. The calculator will suggest the minimum HP required for your well depth to avoid overloading or underperforming.
Determine Pump Efficiency
Enter the pump efficiency rating to assess its performance level and energy consumption. The calculator will help you understand how efficient the selected well pump is in converting power input into water output.
Calculate Minimum Pump Capacity
Input the minimum pump capacity required for your specific use case, such as irrigation or household water supply. The calculator will recommend the ideal well pump size based on your desired water flow rate and usage patterns.
Compare Pump Options
Explore multiple pump options by inputting different specifications and comparing their performance outcomes. The calculator will help you make an informed decision by displaying various pump sizes and their corresponding capabilities.
Estimate Pump Run Time
Calculate the estimated run time of the well pump based on the input flow rate and tank size. The calculator will provide you with a rough estimate of how long the pump needs to run to fill a specific volume of water.
Optimize Pump Selection for Efficiency
Fine-tune your pump selection by adjusting parameters such as flow rate, head height, and efficiency rating for optimal performance. The calculator will assist you in finding the most efficient well pump size that meets your water supply needs.
Check System Compatibility
Verify the compatibility of the selected well pump size with your existing water system components. The calculator will ensure that the pump is suitable for your well depth, piping configuration, and expected water demand to prevent operational issues.
Plan for Future Expansion
Take into account potential future water usage increases when selecting the well pump size to allow for scalability. The calculator can help you anticipate and accommodate additional water demands by recommending a pump size that meets both current and future needs.