The way these devices are used incorrectly can also significantly increase your monthly electricity bill.

1. Water Heater

When using a water heater, many households leave it running continuously day and night, thinking this ensures hot water is always available when needed. Although this saves time, it does not save electricity. In fact, water heaters consume far more power than many people realize.

Common water heaters on the market have capacities ranging from 896 to 3500 watts and can consume between 1 and 3 kWh of electricity per hour. Therefore, to save electricity and reduce costs, it is best to turn on the heater only about 30 minutes before use. This not only lowers electricity bills but also ensures user safety.

2. Kitchen Water Heater

Many families choose to install a small water heater in the kitchen to provide hot water for the sink area, making cooking and washing more convenient.

During cold weather, people may leave the device running continuously when hot water is needed. However, when the weather becomes warmer, do not forget to turn it off because it consumes a large amount of electricity.

In one month, this device can add hundreds of thousands of đồng to the electricity bill. Even in standby mode, its power consumption is not low, using up to about 0.36 kWh of electricity per day.

3. Smart Toilet

To improve comfort and convenience, more and more families are replacing traditional toilets with smart toilets. With this type of toilet, users no longer have to deal with cold toilet seats, creating a much more comfortable experience, especially during cold weather.

However, this convenience also comes with higher electricity costs. If your home uses a smart toilet, it is best to turn off the power when going on business trips or when the toilet will not be used for a long time. Even in standby mode, it still consumes about 0.15 kWh of electricity per day.

4. Microwave Oven

A microwave oven not only reheats food but can also function like a small oven to prepare various dishes. That is why many young people living alone often own one.

Even when not in use, many people keep the microwave plugged in, assuming it does not consume much electricity. However, the reality may surprise you.

Even in standby mode, a microwave can consume about 0.08 kWh of electricity per day. Furthermore, reheating food with little moisture uses even more electricity. Therefore, when not using the microwave, remember to unplug or switch it off as soon as possible. In addition, before reheating dry foods, you can sprinkle a little water on the food to reduce electricity consumption.

5. Set-Top Box

Many people think that since they do not watch TV often and only leave it on standby mode, it does not use much electricity. In reality, that is not the case.

Nowadays, televisions mainly receive signals through the internet, and most households use a set-top box. Even when the TV is turned off, the set-top box continues consuming electricity constantly, and the power consumption is not insignificant.

Some users have tested and found that the amount of electricity consumed when the set-top box is operating normally and when it is in standby mode is almost the same. A tiny set-top box can consume nearly 10 kWh of electricity in a month.

Therefore, when not in use, remember to switch off the set-top box promptly or use a power strip with a switch to easily cut off power when it is unnecessary