1. Water Heaters – The Unsuspected “Money Burner”
An indirect water heater (with a storage tank) has a power rating of 1,500 – 2,500W, which is double that of a typical wall-mounted air conditioner. Direct water heaters even have a power rating of up to 3,500W – 4,500W.
If you turn on the water heater for 30 minutes every day, this appliance can consume between 45 and 70 kWh of electricity per month, equivalent to 120,000 – 200,000 VND, depending on the capacity and usage.
2. Why Do Water Heaters Consume So Much Electricity?
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High Power Consumption: With a power rating of 2,000W and above, these heaters can use up electricity very quickly.
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Left On All Day: Many people forget or are reluctant to turn off the heater, leaving it running continuously.
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Poor Insulation (for older models): Water cools down faster, requiring the heater to turn on more frequently.
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Lack of Regular Maintenance: Scale buildup on the heating element increases heating time and electricity consumption.
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Incorrect Usage: Turning on the heater during peak hours or taking long showers after turning it on causes the appliance to work harder to maintain the temperature.
3. How to Use a Water Heater Efficiently
Here are some simple yet highly effective tips:
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Only turn on the heater 10-15 minutes before showering, then turn it off immediately.
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Do not leave the heater on all day, especially when not in use.
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Install a timer switch to automatically turn off the heater if you forget.
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Choose a model with a high energy efficiency rating (5-star label) or an Inverter heater (smart heater).
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Maintain the heater regularly every 6 months to remove scale buildup and improve heat transfer efficiency.
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For direct water heaters, select a model with smart temperature adjustment and safety sensors.
Water heaters, seemingly insignificant appliances in your bathroom, can significantly increase your electricity bill if used incorrectly.
Be more mindful of how you use your water heater. Don’t let a small habit like “forgetting to turn it off” become a hefty burden on your monthly electricity bill.
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