Water Heater Calculator

Small Storage·Hot Water Calculation

°F / gal

Tank Size

Heater Temp (°F)

Cold Water Temp (°F)

Target Temp (°F)

Hot Water (gal/min)

1.2

Heating Power (W)

12V elements = 200W

24V elements = 400W

48V elements = 500W

110V elements = 500W

110V elements (9L) = 1000W

3L = max of 2 elements

6L = max of 3 elements

9L = max of 3 elements

10L 3-in-1 = max of 2 elements

Heater output exceeds draw demand — the tank can sustain continuous flow at this rate.

Draw Duration

— min

— gal at —°F

Hot Water

1.2 gal/min

Available

— gal

Heater After

—°F

Recharge

— min

Water Heater Temperature

Base

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Energy Balance

Required Power — W

Energy in Heater — kWh

Heating Power — W