MRCOOL MEWH38L82S1

The 3,531 kWh figure is computed by this site, not taken from the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily hot-water draw for the medium pattern. This model's UEF is 0.92. That pattern stands for a typical household with a busy morning of hot-water use. A home that uses more or less hot water than the test assumes will use a different amount of electricity. This page cannot say how much different, because it has no reading of your household's use. The source is the DOE CCD, retrieved 2026-09-19, and how the annual figure is calculated sets out each step.

The registry lists a rated volume of 35 gallons for this tank. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 54 gallons. A household whose morning peak often goes beyond 54 gallons is outside what this rating covers. For that household, the 3,531 kWh figure does not apply either, since it assumes the medium pattern's daily draw. A household with lighter daily use than the medium pattern is also outside the tested condition. For a plumber or seller matching an existing unit, the same-class replacement search by model number finds other electric tanks in the same class.

As the summary states, this model sits at its class median. Models ranked ahead of 213th among the 426 use no more electricity at the same test condition, but this text does not give their figures. The running cost is not stated here, because it depends on your own utility's electricity tariff. The running-cost calculator for your ZIP applies your local rate to the 3,531 kWh figure. Tariffs vary by utility and by date, so the same 3,531 kWh can cost different households different amounts. The installed price range shown elsewhere on this page is a modeled range, not a quote.