Power consumption and energy usage of water heater

A water heater is used to heat up the water in your home for bathing, cooking, cleaning, and space heating. Water heaters have become more energy-efficient than those in the olden days. You can calculate the energy usage of a water heater here. Water heaters, depending on their capacity, consume between 1000 watts and 6000 watts. A typical water heater consumes 3000 watts of power.

Enter the wattage, hours of usage, and cost per kWh. The energy usage calculator for water heaters gives you the total energy consumed by them. Also, you can find how much power your water heater consumes.

Energy usage of water heater

Average duration of usage per day (Minutes):
Cost per unit*:(Global Electricity rates)
Electricity usage per day:
Usage cost per day:
Usage cost per month:
Usage cost per year:
*The cost is currency independent and same that of cost per unit input given.

Terms and definitions:


Power usage of the device in watts as mentioned on its label.

Cost per unit:

The average cost per unit charged by the electric utility. Every country has different tariff rates. Visit: Global Electricity prices for details if you don’t know how much the utility company charges you per unit or kWH.

Units per day:

The number of units of electricity consumed by the load every day considering the entered operation hours.

Hours of usage:

The number of hours the load is used per day.

The electricity usage depends on the wattage and the number of hours of usage. The utility company charges you for the total kilowatt-hour of energy you have consumed. Kilowatt-hour is the product of the power consumption of the load and the number of hours of usage.

Power consumption of water heater

A typical water heater consumes 3kWh of energy per hour of usage. That means an hour of usage can cost you 0.36 cents.

Power consumption & energy usage of water heater

The electric heater uses a resistive element to heat up the water. This heating element is placed in the water tank inside the heater in such a way that it stays immersed in water. It also has a temperature control function that cuts off the power to the heating element when the set temperature is reached.

Energy-saving tips for water heater

  • Do not overheat the water – lower the thermostat.
  • Insulate the pipes.
  • Replace the old water heater with a new one.
  • Switch the heater after use.
  • Try to use cold water whenever possible.

Other power consumption calculators

Air conditioner Electric iron LED bulbs CFL Lamps Ceiling fans Clothes Dryer Dishwashers Microwave oven Vacuum cleaner Refrigerators Water heater Hairdryer Toaster Coffee maker Electric kettle Blender Mixer grinder Juicer Space Heater Air Purifiers Deep fryer Freezers Induction cooktop Xbox & PlayStation Rice cooker Steamer Cooker hood Exhaust fans Humidifier

Leave a Comment