Rheem XE50T12CS55U1

The 3,531 kWh figure is computed by this site, not taken directly from the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily hot-water draw for the medium pattern. For this model the UEF is 0.92. The source is the DOE Compliance Certification Database, retrieved 2026-09-19. The medium pattern represents a typical household with a busy morning, as the federal test defines it. Your own daily use may differ from that test draw. The figure is therefore a rated point for comparison, not a meter reading. The steps are set out in how the annual energy and cost figures are calculated.

Against the 426 models registered as an electric tank at the medium draw pattern, this unit ranks 213th lowest in energy use. Its 3,531 kWh a year sits exactly at the class median, a difference of 0 kWh. That places it in the middle of its class, neither among the lowest nor the highest users. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 63 gallons from a rated volume of 45 gallons. The figures fit a household whose morning use matches the medium pattern. A household with a larger peak-hour need, or a different draw pattern, falls outside this comparison. Energy figures for other draw patterns are not available here. To compare alternatives, use the same-class replacement search by model number.

This page does not state a running cost in the text. The cost of 3,531 kWh of electricity a year depends on your own utility tariff, which varies by provider and rate plan. The page computes it from your ZIP instead of assuming a single national rate. This model's energy use equals the class median at the medium draw pattern. On any given rate, its running cost therefore matches that of a median model in its class. The modeled installed-cost range appears in its own block, with its source and date, and it is not a quote. To see the running cost on your own rate, open the running cost calculator for your ZIP.