FRIEDRICH PROE38 S2 RH93 SB-LO

The registry lists this model with a UEF, the ratio of hot water delivered to energy used, of 0.93. This site computed the annual figure of 2,413 kWh from that UEF and the test's daily hot-water draw. The registry does not publish the annual figure itself. The source is DOE CCD, retrieved 2026-09-19, and the fuel is electricity. The model is an electric tank with a rated volume of 35 gallons. It ranks 9th lowest in energy use among the 163 electric tank models registered at the low draw pattern. That places it in the lowest quarter of its class. Its use sits 26 kWh below the class median of 2,439 kWh. The page on how the annual cost is calculated covers the method.

The low draw pattern describes a one- or two-person household. The figure of 2,413 kWh applies only to that pattern. The registry data used here gives no energy figure for other draw patterns. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 42 gallons. A household that needs more hot water in one hour than 42 gallons is outside what this rating describes. The class median of 2,439 kWh applies to the same low draw pattern, so the comparison holds only there. This page does not judge whether the rated volume suits a given home. Size and fuel options can be compared with the water heater selector.

The running cost is not stated here because it depends on your own electricity rate. Multiplying 2,413 kWh by your rate per kWh gives a yearly figure for the low draw pattern only. The cost calculator on your own ZIP does that step for you. The installed price range appears in its own block on this page, with its source and date. It is a modeled range, not a quote. Actual use differs from 2,413 kWh when a household's hot-water draw differs from the federal test's. The 26 kWh gap to the class median of 2,439 kWh comes from test conditions, not from measurement in any home. To look for another model in the same class, use the same-class replacement search by model number.