Sump Pump Size Calculator
Sump pump sizing involves matching the motor power (HP) and flow rate (GPM) to your basement's water inflow, typically requiring a 1/3 HP pump for average homes and 1/2 to 3/4 HP for high-flow conditions. Proper sizing ensures efficient operation, typically requiring a minimum 24-inch deep by 18-inch wide basin to prevent rapid cycling.
Backup System Size Calculator
Backup system sizing depends on the required flow rate (GPM), vertical lift, and desired runtime. Key options include the Eco ACi+ (up to 35 GPM) for efficiency, 30AC/35AC series (45-55 GPM) for moderate flows, and 55AC series (65 GPM) for high-flow, with runtimes ranging from 15 to over 47 hours depending on battery capacity.
Sizing by Flow Rate (10' Vertical Lift)
- Up to 35 GPM: Eco ACi+ Energy Efficient Sump Pump Battery Backup System.
- Up to 45 GPM: 30AC Series Sump Pump Backup System.
- Up to 55 GPM: 35AC Series Sump Pump Backup System.
- Up to 65 GPM: 55AC Series Sump Pump Backup System.
- Up to 75 GPM: Sumpro Sump Pump Backup System.
Estimated Runtimes (Two 120 AH Batteries)
- 1/3 HP Pump (WC33): ~47 hours.
- 1/2 HP Pump (BA50): ~30 hours.
- 3/4 HP Pump (BA75): ~15 hours.
Sump Basin Water Flow Rate Calculator
- Measure the water rise in your pit in one minute. A 1" rise in a standard 18" pit is 1.1 gallons.
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