AMERICAN ENJ-40W 1**

The 2,466 kWh per year is a figure this site computes, not one the registry publishes. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the daily hot-water draw the DOE test sets for the low draw pattern. For the ENJ-40W 1**, the UEF is 0.91. Both inputs come from the DOE CCD, retrieved 2026-09-19. The result therefore applies only at the federal test's daily draw. It does not describe a home whose daily hot-water use differs from that test draw, and no separate figure for such a home is available here. The steps behind the number are set out in how this site calculates annual energy and cost.

This unit is rated at the low draw pattern, which DOE uses to represent a small household. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 38 gallons, from a rated volume of 35 gallons. Among the 163 electric tank models registered at the low pattern, it ranks 88th lowest in energy use. Its 2,466 kWh sits 27 kWh above the class median of 2,439 kWh. That places it in the quarter just above the middle of its class. A home drawing more hot water each day than the low pattern falls outside the condition these figures describe. To check other units, use the same-class replacement search by model number or the water heater selector by fuel, space and size.

The running cost of the 2,466 kWh is not stated in this text. It depends on your own utility electricity tariff, so the page computes it from your ZIP instead. Enter it in the running-cost calculator for your ZIP to see the figure on your rate. An installed price range is not published for the ENJ-40W 1** either. This model's ratings lie outside the range the cost database's model was fitted on, and the range is not stretched past it. The installed price is therefore unknown here. The 27 kWh gap to the class median is an energy difference at the test draw only. What that gap costs a year also depends on your tariff, so it is not given here.