Ruud PROE38 S2 RH95 B

This site computed the 3,531 kWh figure; the registry does not publish it. 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, taken from the DOE CCD as retrieved on 2026-09-19. Among the 426 electric tanks registered at the medium draw pattern, it ranks 213th lowest for energy use. That places it in the second-lowest quarter of its class, which matches the median position given above. The figure holds only at the federal test's daily draw. A household that uses more or less hot water will use a different amount. The steps are set out on the page explaining how the annual energy and cost figures are calculated.

The model holds 35 gallons. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 51 gallons. Both figures describe the unit as DOE tested it at the medium draw pattern. DOE uses that pattern to represent a typical household of moderate size. A household whose busiest hour stays within 51 gallons falls inside the conditions the test measured. A household that regularly needs more hot water in one hour falls outside them. For that household, the 3,531 kWh figure would not describe its actual use. To compare other units registered in the same class, use the same-class replacement search by model number.

The text on this page gives no running cost. The cost of 3,531 kWh a year depends on your own utility's electricity tariff. That tariff is not part of the registry data, so the page calculates the cost from your ZIP instead of estimating it here. To see the cost for a specific address, enter its ZIP in the running-cost calculator for your own ZIP. The installed price appears in its own block with its source and date. It is a modeled installed-cost range, not a quote. How much this unit costs to run in a given home, at draws other than the federal test's, is not available from the registry.