The cable can be of two types: electric and tap.
With water heating, the cable-pipe cable is joined to the central heating pipes in urban apartment buildings or to an autonomous system in a country house. Water heating is very economical, both when buying and installing, and in use. The disadvantage of living in the apartment can only be considered the connection to the central heating. You will not be able to adjust the heating temperature, ensure a constant uniform supply of water. A possible breakthrough of the pipe and damage to your property and neighbors is quite likely. In this case, all the water located in the pipe cable will flow out. In a suburban house with an autonomous water supply system, this will not happen and the temperature of the water supplied to the water system is easily regulated.