Midea MEWH40S82S1

This site computes the 3,531 kWh figure; the registry does not publish it. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the daily hot-water draw in DOE's test for the medium draw pattern. This model's UEF is 0.92. The registry data comes from the DOE CCD, retrieved 2026-09-19. The figure assumes the test's daily draw. A household that uses more or less hot water than that pattern will use a different amount of energy. The data here does not show how far real use departs from the test. The calculation steps are set out under how the annual cost is calculated.

The model ranks 213th for lowest energy use out of 426 in its class. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 55 gallons. The rated volume is 37 gallons. The medium draw pattern represents a typical household's use on a busy morning. The energy figure therefore describes homes whose use resembles that pattern. If a home's peak-hour demand is above the 55-gallon first hour rating, the figure does not describe its expected use. The data here does not cover performance outside the test. Other units can be compared with the water heater selector by fuel, space and size.

The text states no running cost for this model. Running cost depends on your own utility electricity tariff, applied to 3,531 kWh a year at the medium draw pattern. The cost calculator on your own ZIP computes it from your rate. The installed price range appears in its own block with its source and date. It is a modeled range, not a quote. If you are matching a replacement, find a same-class replacement by model number lists other electric tank models at the medium draw pattern. You can check their energy use against this model's 3,531 kWh, which sits at the class median of 3,531 kWh.