In private houses and many apartments, hot water is provided using a water heater. Thanks to their function, no need to worry about that, how to take a hot bath or wash dishes in a comfortable environment. Considering various solutions, available on the market, doubts may arise - which water heaters will be better. Below are the main types of devices in this class. Water heaters can be divided into two groups, depending on the heating method.
Instantaneous water heaters
Such models heat water the moment the hot water tap is opened.. They can be connected to only one tap. This forces you to install multiple devices. Electric instantaneous water heater ideal for bathrooms, where only a shower cabin is installed. 
The advantages of flow models are as follows::
- The water only heats up then, when it's really needed;
- Takes up little space and looks more presentable;
- Lower installation cost;
- Low energy consumption.
disadvantages
- You have to wait a while, until the water heats up to the required temperature. Cold water will come out of the tap first;
- It is necessary to install a heater in each room, where do you plan to use the hot water?.
Capacitive water heaters
Capacitive heaters differ from models of the first category in their heating function and long-term storage of hot water. When choosing such a model, first of all you need to select the tank volume and take into account, how many people are in the family and their needs. Happy birthday, thanks to the additional insulating layer, they allow you to maintain a high temperature for quite a long time after heating. In this group, two types of capacitive heaters can be distinguished:
- under pressure. Have a large tank (200 liters) and allow you to make branching throughout the house;
- no pressure. The capacity of such models is low (to 10-15 l), and they can only be connected to one tap.
Benefits
- The ability to heat water according to the needs of the whole family;
- Constant temperature maintenance allows you to instantly use hot water;
- Some models allow branching to several taps in the house.
disadvantages
- Additional space will be required, where will the tank be located?;
- Much higher installation costs;
- Higher maintenance costs.
Which water heater is better - you should look at your needs. How can you see, there is no ideal solution.