Booster Pump Sizing Calculator

Size water booster pumps for multi-story buildings and low-pressure applications

Building Information

Pressure Requirements

Minimum available
15 PSI flush tank, 25 PSI flush valve

System Losses

Pump Requirements

Required Pump Head --
Required Flow Rate --
Motor Horsepower --
Static Head (elevation) --
Pressure Deficit --
Total System Losses --
Booster Required? --
Note: Select pump with performance curve matching required flow and head.

System Configuration

Recommended System:

Configuration will appear after calculation.

Typical Pump Efficiencies

Pump Size Efficiency Typical HP Range
Small (< 50 GPM)50-60%1/2 - 3 HP
Medium (50-150 GPM)60-70%3 - 10 HP
Large (> 150 GPM)70-80%10 - 50 HP

Booster Pump System Types

System Type Application Advantages Considerations
Constant Speed Small buildings Simple, low cost Less efficient, pressure fluctuation
Variable Speed (VFD) Most applications Energy efficient, constant pressure Higher initial cost
Duplex/Triplex Critical systems Redundancy, lead-lag operation More complex, higher cost
Hydropneumatic Small systems Simple controls Tank space, pressure variation