Ruud MSR50245 C

The annual figure of 2,494 kWh is computed by this site, not read from the registry. It starts from the registry's UEF, the ratio of hot water delivered to energy used, which is 0.9 for this model. It then applies the DOE test's daily hot-water draw for the low draw pattern. The fuel is electricity, and the DOE CCD data was retrieved on 2026-09-19. The result holds only at that test draw, so a household drawing more or less hot water will use a different amount. The calculation method is on the methodology page.

Among the 163 models registered as an electric tank at the low draw pattern, this model ranks 122nd lowest in energy use. Its 2,494 kWh is 55 kWh above the class median of 2,439 kWh, in the second-highest quarter of the class for energy use. The registry lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 41 gallons. The rated volume is 48 gallons. The low draw pattern matches a one- or two-person household, so this figure suits that use. It does not describe a larger household, and energy use at other draw patterns is not available here. The water heater selector filters by fuel, space and size.

Running cost depends on your own electricity rate, so no cost figure is written on this page. Multiply 2,494 kWh by your utility's rate per kWh, or use the cost calculator to compute it from your ZIP. That result applies at the low draw pattern only. The difference of 55 kWh from the class median of 2,439 kWh is a comparison of energy use, not of cost. The installed price range is not published for this model. Its ratings lie outside the range the cost database's model was fitted on, and that range is not stretched. To compare another unit of the same class, use the replacement lookup by model number.