FRIEDRICH PROE38 S2 RH93 SB

The 3,456 kWh figure is not a registry entry. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, and from the daily hot-water draw that the DOE test assigns to the medium draw pattern. This model's UEF is 0.94. The source is DOE CCD, retrieved 2026-09-19. Against the 426 electric tank models registered at the medium draw pattern, this unit ranks 137th lowest for energy use. That places it in the second-lowest quarter of its class, 75 kWh below the class median of 3,531 kWh. The figure applies only to that test draw. How the annual figure is calculated is documented separately.

The medium draw pattern describes a typical household with a busy morning of hot-water use. This unit has a first hour rating, the gallons of hot water available in the first hour from a full tank, of 59 gallons, and a rated volume of 35 gallons. A household whose real usage matches that pattern can compare its situation directly with the 3,456 kWh figure. A household that draws noticeably more or less hot water is not covered by it, and the data here gives no annual figure for any other draw pattern. Anyone comparing sizes or fuels can start from the water heater selector.

The running cost is not stated in the text because it depends on your own utility electricity tariff. The energy quantity is 3,456 kWh at the medium draw pattern, and the cost is that quantity multiplied by the rate you pay. The cost calculator applies your ZIP to this model's figure. The modeled installed-cost range appears in its own block on this page, with its source and date, and is not repeated here. The registry does not measure use in an individual home, so actual consumption can differ from the test-based 3,456 kWh. The same-class comparison against the class median of 3,531 kWh does not change with your rate.