Ruud MR30245 C

The annual figure for the Ruud MR30245 C is 2,550 kWh of electricity at the low draw pattern. The registry does not state this number itself. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, which is 0.88 for this model, and from the DOE test's daily hot-water draw for that draw pattern. The DOE CCD data was retrieved on 2026-09-19. The calculation is described on the methodology page. The figure applies only at the test draw; energy use in a home with a different daily draw is not available here.

Against its class, this model sits 111 kWh above the class median of 2,439 kWh. The class is the 163 models registered as an electric tank at the low draw pattern. This model ranks 158th lowest in energy use, which places it in the highest quarter of the class for energy use, meaning higher use than most models it is compared with. The comparison covers energy use at the test draw only. It says nothing about how long the unit lasts or how it performs in a given home. Anyone checking the rank against the registry should use the same class definition, because a different grouping would change both the median and the rank.

The rated volume is 28 gallons, and the first hour rating, the gallons of hot water available in the first hour from a full tank, is 37 gallons. Those ratings go with the low draw pattern, which represents a small household. A home with higher hot-water demand is not represented by the 2,550 kWh figure, and its own use is not available here. The water heater selector filters by fuel, space and size. The running cost is not stated in this text because it depends on your utility electricity tariff. The cost calculator computes it from your ZIP. An installed price range is not published for this model, because its ratings lie outside the range the cost database's model was fitted on.