AMERICAN ENJB-40 1**

The registry lists this model at a UEF, the ratio of hot water delivered to energy used, of 0.94. The registry does not publish annual energy use. This site computes it from that UEF and the DOE test's daily hot-water draw for the medium draw pattern. The result is 3,456 kWh of electricity a year, taken from DOE CCD data retrieved 2026-09-19. Because it follows the test's draw, the figure describes the test and not any particular home. The calculation method sets out each step of the computation.

Against its class, this model ranks 137th lowest in energy use of 426 electric tank models registered at the medium draw pattern. Its 3,456 kWh is 75 kWh below the class median of 3,531 kWh, which places it in the second-lowest quarter of its class for energy use. The comparison covers only this draw pattern; figures for other draw patterns are not available here. The unit has a first hour rating, the gallons of hot water available in the first hour from a full tank, of 57 gallons, and a rated volume of 35 gallons. It suits households whose demand matches the medium draw pattern. A household that needs more hot water in an hour than 57 gallons is outside what these figures cover. The selector by fuel, space and size filters other options, and you can find a same-class replacement by model number.

Running cost is not stated in this text because it depends on your own utility electricity rate. The cost calculator applies the rate for your ZIP to the 3,456 kWh figure, which holds only at the medium draw pattern. If your household uses more or less hot water than that draw, your annual energy use will differ from 3,456 kWh. The size of that difference is not available from this data. The 75 kWh gap to the 3,531 kWh class median is an energy difference, and its cost also depends on your rate. The installed price range appears in its own block with its source and date; it is a modeled range, not a quote.