Water heating
Annual consumption
Water heating
Baths and showers
Unit of
measure converter

Annual consumption

Estimate the cost of electricity for heating water

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Number of people in household

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Data and assumptions used for estimate:
- Annual consumption is based on typical values, mainly for baths, showers, laundry and washing dishes.
- For 1, 2 or 3 people, calculations take into account standby loss for a 40-gal. water heater (97 W).
- For more than 3 people, calculations take into account standby loss for a 60-gal. water heater (115 W).
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Baths and showers

Estimate the cost of electricity used for heating water

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Amount of water used

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Data and assumptions used for estimate:
- Volume of water in standard bathtub: 100 L
- Low-flow showerhead: 9.5 L/min
- Regular showerhead: 11 L/min
- Water temperature of bath or shower: 38°C
- Mean annual temperature of water from mains: 7°C
- Temperature of water from water heater: 60°C
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Unit of measure	Equivalent
Temperature:	°F
Length:	ft.
Area:	sq. ft.
Volume:	Imp. gal.
U.S. volume:	U.S. gal.
Wattage:	kW
Heat:	Btu/h
Cooling:	ton
Cooling:	ton
Mass:	lbs