LOCHINVAR ENLB-40 1**

This site computed the 3,531 kWh figure; the registry does not list it. It uses the registry's UEF, the ratio of hot water delivered to energy used, and the daily hot-water draw that the DOE test sets for the medium draw pattern. The UEF for this electric tank is 0.92. The source record comes from the DOE Compliance Certification Database and was retrieved 2026-09-19. The figure is valid only at that test draw. A household that uses more or less hot water each day will use a different amount of energy, and that amount is not known here. The method is explained in how the annual cost is calculated. This model ranks 213th for lowest energy use among the 426 models registered as an electric tank at the medium draw pattern.

This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 51 gallons. Its rated volume is 35 gallons. The registry records both figures, and they describe capacity, not energy use. A household whose busiest hour needs that much hot water or less is within what the model is rated to deliver. If a household's peak hour regularly needs more, it is outside that rating. The energy figure above then does not describe that household's use. The selector by fuel, space and size compares models with a different capacity or fuel. You can also find a same-class replacement by model number to see other models registered in this class.

This text does not state a running cost, because the cost depends on your own utility's electricity tariff. The page works it out from your ZIP by applying your rate to the 3,531 kWh figure at the medium draw pattern. No cost is estimated in this text. The cost calculator on your own ZIP shows that result. This model sits 0 kWh from the class median of 3,531 kWh. On the same rate, its computed running cost therefore matches that of a model at the class median, at the same test draw. The installed price range appears in its own block with its source and date. That range is modeled and is not a quote.