What are the advantages and disadvantages of instant electric water heaters?

Instant electric water heaters are also a common type of water heater in normal life. So I wonder if everyone knows about its advantages and disadvantages? Is it safe to use an instant electric water heater?

The advantages of instant electric water heaters

First, the hot electric water heater has large power and is very fast heating. Generally, the user can provide hot water with suitable temperature in a few seconds, which saves the waiting time of the user.

Second, the instant electric water heater eliminates the water storage tank, and the smaller the volume, the installation space is saved, and the expansion screw with strong bearing capacity is not needed for installation.

Third, before use, as long as the temperature is adjusted, the electric water heater will maintain a constant temperature, while washing and heating, do not worry that the temperature will be reduced due to the amount of water.

Fourth, the thermal electric water heater has a high heat conversion rate, and does not need to be preheated in advance during use, which can reduce heat loss, which is convenient to use immediately.

5. It is made of all-metal mainly copper. In order to ensure that it does not leak water during use, it also has an imported carbonized ceramic valve core. This type of water heater does not have a water tank, and the water flow is heated by the heating body inside it without stopping inside the water heater, so that objects such as scales are rarely caused to cause malfunction. The performance of a good thermal electric water heater can last for more than fifteen years.

Shortcomings of instant electric water heaters

First, in order to ensure the characteristics of instant heat, its power is usually not lower than 6000W, and the power consumption is large, which has high requirements for the installed circuit. The power cord generally needs to be above 2.5 square millimeters, and some even need to reach 4 square millimeters to reach the standard. These costs are more expensive for ordinary families.

Second, the characteristics of water flow and heating, it is difficult to heat it to more than 60 degrees, and in order to ensure the temperature, the maximum flow of water will not be set very large

Third, it has strict installation conditions, that is, the electric water heater needs more electric power than the ordinary water storage type water heater. Under normal circumstances, it needs to reach 6.2 kW, if it is more power in winter. In the case of a household 220V power supply, the corresponding current of 6.2kW is 28.3A, which indicates that a copper core wire of at least 4 square millimeters needs to be separately disposed, and a switch larger than 40A is used to ensure that the water temperature of the water heater reaches a temperature suitable for the user. The power supply capacity of the old house basically meets this requirement, and the new house installation must also carefully calculate the power load capacity.