The boilers that produce hot water in our homes can be powered by electricity (boiler) or gas.
They can also work in different ways depending on the models:
In the case of Instant models , a flame heats a coil in which the water is made to pass by heating it instantly.
In the Accumulation models instead the water enters a tank that is heated and kept in temperature in order to guarantee a hot water flow. Also in this case they can be electric or gas powered
Water heater - boiler
Homes that have independent heating produce hot water through the same boiler used for heating.
In cases of centralized heating, a boiler will heat water to compensate for this.
Water heaters can be gas-fired or heat water with electric heaters in this case we will call these boiler boilers ..