Estimate electric geyser/immersion heating cost and practical saving actions.
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Water Heating Cost Check
Estimate geyser/immersion cost and simple saving actions.
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Input Details
Fill what you know. If a value is unknown, keep the practical default and verify the nameplate later.
How many units does a 2000 watt geyser use?
Short answer: A 2,000 W geyser uses 2 units (kWh) for every hour its heating element is on. Heating for 1 hour a day uses about 60 kWh a month, around ₹480 at ₹8/kWh in India, or about $10.99 at the US average of 18.3¢/kWh. A 3,000 W instant geyser uses 3 units per hour of heating.
Geyser consumption at 1 hour heating per day
Geyser rating
kWh per day
kWh per month
Cost/month (₹8/kWh · US 18.3¢/kWh)
1,000 W
1.0
30
₹240 / $5.49
2,000 W
2.0
60
₹480 / $10.99
3,000 W
3.0
90
₹720 / $16.48
Tip: Switching the geyser off after heating and using a timer typically cuts 20–30% of its energy.
Using this calculator outside India? Outside India? Pick your currency at the top of the page and enter the per-kWh rate printed on your bill. Typical residential averages: USA 18.3¢/kWh (EIA, July 2026; California 33.6¢, Texas 15.9¢), UK about £0.25/kWh, Germany about €0.38/kWh, UAE about AED 0.23–0.38/kWh, Canada about C$0.13–0.20/kWh and Australia about A$0.30–0.35/kWh. The kWh result is the same in every country; only the cost changes.
By Harshad Kumar Sharma · Last reviewed · Method: kWh = watts × hours × days ÷ 1,000
Monthly units = geyser watts × heating hours/day × days/month ÷ 1000. Thermostat cycling and water temperature affect actual use.
This is a preliminary planning estimate. For certified audits, use site measurement and nameplate readings.
FAQ
Does keeping the geyser on all day increase the bill?
Yes. A storage geyser loses heat through its tank and keeps reheating the water, so leaving it on all day wastes standby energy. Heat water only before use.
Is geyser a high load?
Yes. 2kW geyser running daily can become one of the top winter loads.
Is solar water heater worth it?
For daily hot water use, it can be worth checking payback. Occasional users may not recover cost quickly.
Best first action
Use a timer and avoid keeping the geyser on after hot water is ready. This is usually cheaper than replacing the geyser.
Accuracy note
The result is a planning estimate. Use nameplate wattage, measured runtime and current tariff for professional-level accuracy.