The Bosch WST line of indirect fired water heaters are the perfect fusion of solar, hydronic, and electric domestic hot water. The tank includes one coil for hydronic and solar/geothermal use respectively, with the backup electric heating element kicking in whenever neither are available (or if it is the preferred heating method at the time). The ceramic tank lining works together with the sacrificial anode rod to resist internal corrosion, and the insulated tank keeps heat loss to a minimum.
Electric Heating Element Included
The Bosch WST119 EL indirect fired water heater includes an electric heating element for backup water heating when solar or hydronic sources are not available.
Included Anode Rod
The water heater includes a sacrificial, replaceable anode rod, significantly reducing pipe corrosion over time.
Insulated Tank Design
The included insulation with the WST119 EL water heater keeps standby heat losses low and energy costs down.