The main criterion, on which the choice of any water heater depends, is the volume of hot water consumed. Two people spend much water much less than a full -fledged or large family.
There are several types of water heaters.
Electric flow water heater.
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The main feature of this water heater is rapid heating to the desired water temperature, which is achieved by passing water through the heat exchanger. The water passage period is very short – about a few minutes. As a result, you get hot water almost immediately, which is very convenient. The water temperature of the flowing from the flow heater depends on the flow rate. Naturally, the lower, the increased heating temperature.
The power that he consumes is quite high.
As a result, it is necessary to conduct a separate electric cable, this should not be forgotten when the acquisition of such a device.
Accumulative electric heater.
To use water in large volumes, a great option would be a large heater of storage water. Such a heater has one drawback, he needs the required time to heat the water to a certain temperature. After the water ended in the water heater, it is automatically filled into it. With the help of powerful thermal insulation of the accumulative heater, water retains the resulting temperature for a long time, the same way as this happens in the thermos.