Stream 33 MEWH30S82S1

This site computes the 2,439 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 DOE test's daily hot-water draw for the low draw pattern. For this model the UEF is 0.92, from DOE CCD data retrieved 2026-09-19. The result holds only at that test draw. It does not describe electricity use at any other daily draw. Its rank of 19th places it in the lowest quarter of its class for energy use. Its figure is also equal to the class median of 2,439 kWh. This data does not explain how tied values are ordered in the rank, so that detail is not available here.

The low draw pattern stands for a one- or two-person household. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 47 gallons. That rating comes from a rated volume of 28 gallons. This page's data covers only the low draw pattern. Energy use at a heavier daily draw is therefore not available for this model. A plumber matching a failed unit can find a same-class replacement by model number to compare other low-draw electric tanks. A reader who needs a different fuel or size can use the water heater selector by fuel, space and size.

No running cost appears in this text. The cost of 2,439 kWh a year at the low draw pattern depends on the reader's own utility electricity tariff. The page therefore computes it from the reader's ZIP instead of estimating it. You can enter your ZIP in the cost calculator for your own ZIP. The page on how the annual cost is calculated shows how the energy figure and your rate are combined. The installed price range sits in its own block on this page with its source and date. It is a modeled range, not a quote. This model's energy use equals the class median of 2,439 kWh. At any given rate and the same test draw, its running cost therefore matches a median model in the class.