Instant geyser electricity consumption

Work it out for your home

Units at 3 kW

Instant water heaters have no BEE star label. Units = rated kW × hours used. Check the rating on your heater (3 kW is common; some are 4.5 kW).

What it adds to your bill, state by state

For 3 kW instant heater, 15 minutes a day (22 units a month), on each state’s current tariff with the government schemes that apply to every home. Per month; two-monthly and quarterly bills are shown as a monthly average. Duty and fuel surcharge are not included.

Why the cost differs so much

Your electricity is charged in slabs. An appliance adds its units at the top of what you already use, where each unit costs the most, and in some states it can push the whole bill into a dearer table or past the limit of a free-units scheme. That is why the same appliance costs very different amounts in different states, and in different homes in the same state.

Method and sources

• Instant water heaters are not covered by BEE star labelling; rated kW from the appliance

Related guides

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• 15 litre geyser
• 25 litre geyser
• 1 ton AC
• 1.5 ton AC
• 2 ton AC
• AC units per hour
• 3 star vs 5 star AC
• Inverter vs non-inverter AC
• All appliance guides