LOCHINVAR ENT-50-1**

This site computed the 3,531 kWh figure; the registry does not list it. The figure combines the registry's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily draw for the medium pattern. This model's UEF is 0.92, taken from DOE CCD data retrieved 2026-09-19. The figure therefore holds only at that federal test draw. A household drawing more or less hot water each day will use a different amount, and this page does not estimate it. Among the 426 electric tank models at the medium draw pattern, this model ranks 213th lowest for energy use. That places it in the second-lowest quarter of its class. The full method is set out in how the annual cost is calculated.

The medium draw pattern stands for a typical household's hot-water use, including a busy morning. This model lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 62 gallons. Its rated volume is 46 gallons. Both values come from the registry listing for ENT-50-1**. A home whose morning demand stays within 62 gallons fits inside that rated capacity. A home that regularly needs more in an hour falls outside the tested condition. In that case, the 3,531 kWh figure does not describe its expected use. Models of other fuels and sizes can be compared in the selector by fuel, space and size.

The running cost is not stated in this text. It depends on your own utility electricity tariff, which differs by provider and rate plan. The page computes it from your ZIP, using the 3,531 kWh figure at the medium draw pattern. This model's use is equal to the class median of 3,531 kWh, a difference of 0 kWh. On the same rate, its running cost therefore matches that of a median model in its class. The installed price range appears in its own block with its source and date. It is a modeled range, not a quote. To apply your own rate, use the cost calculator on your own ZIP. To check a model in the same class, find a same-class replacement by model number.