Rheem PROPH50 T2 RH375-SO

This site calculated the 837 kWh figure. It does not come 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 draw pattern. For this model the UEF is 3.88, from DOE CCD data retrieved 2026-09-19. The medium pattern stands for a typical three- or four-person household. Among the 426 electric tank models registered at that pattern, this one ranks 5th lowest in energy use. That places it in the lowest quarter of its class. A household that uses more or less hot water than the test assumes will use a different amount of energy. That amount is not available here. The page on how the annual cost is calculated sets out the steps.

Two figures show how much hot water the unit supplies at a busy time. One is the 45-gallon rated volume. The other is the first hour rating, the gallons of hot water available in the first hour from a full tank. For this model the first hour rating is 67 gallons. The unit is registered at the medium draw pattern, and that is the condition behind the 837 kWh value. A household whose morning use stays within 67 gallons is close to the test's assumptions. A household whose morning use goes above that figure is outside that condition. The data does not show how this unit performs at a higher draw. For a different load, the selector by fuel, space and size filters models by those terms.

The running cost is not given here because it depends on your own utility's electricity tariff. Your cost starts from the 837 kWh a year at the medium draw pattern. The other input is your rate per kilowatt-hour. The cost calculator on your own ZIP applies your local tariff to that figure. The same method applies to the 2,694 kWh gap against the 3,531 kWh class median. At a single flat rate, the cost difference follows that energy difference. The installed price range on this page is a modeled range, not a quote. Its source and date appear in its own block. To compare this unit with another model in the same class, use find a same-class replacement by model number.