Solar Water Heater Pump Calculator

Size circulation pumps and estimate power use for solar water heating systems.

Determine optimal pump sizing for solar water heaters based on collector area, vertical head, and plumbing details. Provides power consumption estimates and annual cost projections.

Key Features

Flow rate calculation based on collector area
Pump head and power estimation
Cost projections using local electricity rate
Presets for common system configurations
Efficiency adjustments via Solar Energy Factor

System Specs

Collector Area (sq ft)

Flow Rate per Collector (gpm/sq ft)

0.040

Pump & Plumbing

Vertical Head (ft)

Pipe Diameter (inches)

Number of Fittings

Efficiency & Cost

Solar Energy Factor (SEF)

2.0

Electricity Rate ($/kWh)

Presets

Required Flow

1.6 gpm

Pump Head

20.5 ft

Pump Power

16.8 W

Annual Cost

$2.76

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