Start Services Knowledge Are an immersion heater and an over the side immersion heater the same?

Yes, in principle they are the same. Both are devices that can heat different types of liquids, both of which have electricity that goes in metal loops that in turn heat the water. Electric immersion heaters can be used, among other things, to generate heat in boilers and accumulator tanks when other heat is not supplied. An over the side immersion heaters are insulated heating elements that are placed in the liquid and transfer heat to it.