An exchanger with a coil is one of the most popular ways to provide hot water. The device works with one heat source, e.g. a gas, pellet, oil boiler or a fireplace with a water jacket. It is an efficient and powerful device in which water is heated by a spiral coil located in the lower and possibly upper part of the tank.
Enamelled heat exchangers are available in several variants:
with a maxi coil adapted to heat pumps
with two coils for connecting solar panels and a central heating boiler
with one coil
without coils