LOCHINVAR ENSB-30 1**

The figure of 2,466 kWh is computed by this site, not published by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, which is 0.91 for this model, with the daily hot-water draw that the DOE test assigns to the low draw pattern. The fuel is electricity, and the source is DOE CCD, retrieved 2026-09-19. Because the test uses a fixed daily draw, the figure describes the model under test conditions and not a particular home. The gap of 27 kWh from the class median is measured against the 163 models registered as an electric tank at this draw pattern. How the annual cost is calculated sets out the method.

The low draw pattern corresponds to a one- or two-person household, so this figure is relevant to a reader whose hot-water use resembles that. The registry lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 50 gallons, and a rated volume of 27 gallons. The model ranks 88th lowest for energy use of 163, which places it in the second-highest quarter of its class for energy use. The figure does not apply to households with a different draw pattern, and no value for other draw patterns is available here. The water heater selector filters by fuel, space and size.

The running cost is not stated in the text because it depends on the utility electricity tariff at the reader's own address. Applying your own rate per kilowatt-hour to 2,466 kWh gives the running cost at the low draw pattern, or you can enter your ZIP in the cost calculator, which does this calculation. The installed price range is not published for ENSB-30 1**: its ratings lie outside the range the cost database's model was fitted on, and the range is not stretched past it. To look at other units in the same class, find a replacement by model number using ENSB-30 1**.