Residential Gas Storage Water Heater
A water heater that utilizes gas as the energy source, that heats and stores water at a thermostatically controlled temperature for delivery on demand and is marketed by the manufacturer for residential use.   

NOTE: Residential gas automatic storage water heaters of the “Counter Type,” which includes such heaters as flush, recessed, and concealed types are also covered by this definition and should be included in your reports.






Residential Electric Storage Water Heater
A water heater that utilizes electricity as the energy source and that heats and stores water at a thermostatically controlled temperature for delivery on demand and is marketed by the manufacturer for residential use.

NOTE: Residential electric automatic storage water heaters of the “Counter Type,” which includes such heaters as flush, recessed, and concealed types are also covered by this definition and should be included in your reports.