Home Depot sells a 60-gallon indirect SuperStor water heater for $1,899, and Boston Heating Supply sells the same model for $1,354.88, as of 2015. SuperStor prices vary based on the size of the water heater.
The SuperStor 60-gallon water heater gets its energy from a boiler and does not need its own heat source. The water flows through the water heater into an internal heat exchanger in the tank. This helps to reduce standby and increased efficiency. This model has thick, environmentally friendly foam insulation, and it has a simple design that eliminates the need for costly scheduled maintenance. This unit can be linked to an external boiler with a circulated pump or zone valve.