Lennox WHES050S45TN240S****

The 3,531 kWh figure does not appear in the registry itself. This site calculated it from the model's UEF, the ratio of hot water delivered to energy used, and the DOE test's daily hot-water draw for the medium draw pattern. This model's UEF is 0.92. The source is the DOE CCD, retrieved 2026-09-19. The class is the 426 models registered as an electric tank at the medium draw pattern. This model ranks 213th lowest for energy use in that class. Its figure matches the class median of 3,531 kWh, a difference of 0 kWh. The steps behind the annual figure are explained in how the annual energy and cost are calculated.

The medium draw pattern represents a typical household's hot-water use on the federal test. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 60 gallons. Its rated volume is 45 gallons. The 3,531 kWh figure applies to a home whose daily hot-water use matches that test pattern. A home that uses more hot water than the medium pattern will use more energy than 3,531 kWh. This data does not show how much more. A home that uses less will use less energy, and that amount is not available here either. To compare models by fuel, space and size, use the water heater selector. To match this unit's class, find a same-class replacement by model number.

The running cost is not given in this text. It depends on your own utility's electricity tariff, which varies by provider and plan. The page multiplies this model's 3,531 kWh a year by the rate for your ZIP in the cost calculator for your own ZIP. The class median is also 3,531 kWh. At the same tariff, a model at the median would therefore have the same calculated cost, because the difference is 0 kWh. Your actual yearly bill also depends on your household's real hot-water use, which is not available in this data. The installed price range appears in its own block, with its source and date. It is a modeled installed-cost range, not a quote, so its figures are not repeated here.