In the cold season, water heaters in households increase their operating capacity. However, some wrong habits when using water heaters cause electricity bills in the winter to skyrocket, even affecting health and increasing the risk of fire and explosion.

Many families have the habit of leaving the water heater on 24/24 hours. Basically, the water heater is always in operation and is continuously powered. The advantage of this is that there is always hot water available in the house, which is very convenient for use.

Although the amount of electricity to heat enough water for use is not too much, if the device is on all day, the electricity bill will definitely increase.

The water heater heats water like an electric kettle. When it reaches a certain temperature, the thermal relay of the water heater will automatically turn off. However, the water heater will cool down slowly if not used. If the switch is not turned off, when the water cools, the water heater will turn on again to heat the water. This process is repeated continuously throughout the day, leading to a waste of electricity.

In addition to consuming a lot of electricity, the water heater continuously heating water at high temperatures will cause dirt to gradually accumulate. Over time, the water heater will have a thick layer of residue, reducing its heating efficiency.

In fact, the habit of turning on the water heater all day is the leading cause of wear and tear on the insulation, causing the power cut-off system to no longer work effectively, which in the long run can easily lead to electric leakage, which is very dangerous.

Therefore, many repairmen recommend that you turn on the water heater when needed. This helps save electricity and reduce living expenses. Because when the water heater is off, it will not consume electricity. The water in the tank will not be continuously heated at high temperatures. At the same time, turning it on/off when needed also helps reduce wear and tear, prolonging the life of the tank.

However, turning on the water heater when needed does not mean that you can use hot water immediately. Sometimes if you forget to turn on the water heater first, the user will have to wait a long time. Especially in winter, when the washing area and the kitchen are both connected to the hot water pipe, if the water heater is not working, other areas will not have hot water to use.

When adjusting the temperature of the water heater, safety is the top consideration. Too high a temperature can cause burns. When using a water heater in winter, it is best to set the temperature between 45 - 50 degrees Celsius. This is the most suitable temperature for the human body, and also the most energy-saving. On average, for every 10 degrees increase, energy consumption will increase by about 15%.

In addition, heating hot water at too high a temperature for a long time also reduces the life of the device, creates a lot of residue in the water heater, affecting the safety of the user. Accordingly, if the temperature increases by 5°C, the process of creating residue is accelerated. This wastes electricity and time, and is also suitable for some people with skin allergies.

For devices without a temperature setting, it is recommended to turn on the tank 15-30 minutes before use, depending on the tank capacity. When using a water heater, turn it off to avoid the risk of electrical leakage.

Therefore, you should not turn on the water heater all day:
1. Waste of electricity

The basic operating principle of a water heater is to heat the heating wire in the tank to heat the water. Although the device is designed to be more complex and modern, when turned on for too long, it is very easy to leak electricity, leading to dangerous explosions. Therefore, the water heater should not be turned on all day. Then the tank will have the function of heating when the water temperature in the tank drops to a certain temperature.

Currently, there are also many types of water heaters with the ability to retain water from 48h - 72h. Thanks to that, there is no need to turn on the device all day but still have enough water to use.

2. Dangerous when used

In many cases, turning on the water heater frequently causes electrical overload. This leads to other surrounding devices short-circuiting and burning due to unstable power sources.

In addition, 24/7 operation requires the internal components of the device to always operate, leading to the components in the machine operating at full capacity. This causes easy damage, causing electrical leakage to the outside. More seriously, it will cause life-threatening dangers to the user.

3. Reduces the life of the water heater

Leaving the water heater on all day causes consequences that affect the life of the device:

The heating element corrodes faster in a bad water environment. The element quickly becomes scaled, reducing its life and increasing the possibility of electrical leakage from the heating element inside.

The thermal sensor operates continuously for a long time, which will lead to a decrease in accuracy and life of the machine

The best insulation cannot keep the water completely hot for a long time. Therefore, turning on the heater to heat an unnecessary amount of hot water leads to a waste of electricity and can easily cause fire and explosion

The components in the water heater are always in a high temperature environment, which can easily lead to cracking, breaking and a decrease in life.