Richmond XE50T12CS55U1

The 3,531 kWh figure is computed by this site, not published by the registry. It starts from the model's UEF, the ratio of hot water delivered to energy used, which is 0.92. That ratio is applied to the DOE test's daily hot-water draw for the medium pattern. The UEF comes from the DOE CCD, retrieved 2026-09-19. The result describes electricity use at the federal test's draw, not in any particular home. A household whose daily hot-water use differs from that draw would use a different amount. How large that difference is for a given home is not available in this data. The full method is on the page explaining how the annual cost is calculated.

The median comparison above covers only the 426 models registered as an electric tank at the medium draw pattern. The medium draw pattern represents typical household use as DOE defines it for this test. The registry also lists a first hour rating, the gallons of hot water available in the first hour from a full tank. For this model it is 63 gallons, from a rated volume of 45 gallons. A household whose busiest hour needs more than 63 gallons falls outside what that rating covers. Homes considering a different fuel or draw pattern are not part of this class comparison. For those, the selector by fuel, space and size lists the other classes.

The running cost is not stated in this text because it depends on your own utility electricity tariff. The page computes it from your ZIP, using the 3,531 kWh figure at the medium draw pattern. Because this model's energy use equals the class median, its cost on a given rate matches that of a median model in the class. A model in the same class with lower annual energy use would cost less on the same rate. To see the figure for your area, use the cost calculator on your own ZIP. To check another model against this one, find a same-class replacement by model number. The installed price appears in its own block as a modeled range, not a quote.