Midea D40-45FJ

This site calculates the 3,531 kWh figure; the registry does not list it. The calculation combines the model'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. The UEF comes from the DOE CCD, retrieved 2026-09-19. On annual energy use, the model ranks 213th lowest of the 426 models in its class. That rank puts it in the second-lowest quarter of the class. It sits 0 kWh from the class median of 3,531 kWh, so its energy use matches the middle of the class. The method is described step by step on the page about how the annual cost is calculated.

The medium draw pattern describes the household demand DOE sets for this tier of the test. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 55 gallons. Its rated volume is 37 gallons. The 3,531 kWh figure applies to homes whose daily hot-water use is close to the medium pattern. If your busy hour needs more than 55 gallons, this rating does not cover that demand. In that case, the selector by fuel, space and size filters models by those factors. To check other units from the same class, find a same-class replacement by model number.

The running cost is not given in this text. The yearly cost of 3,531 kWh depends on the tariff charged by your own electricity utility. The page calculates that cost in a separate block from your ZIP. You can also enter it in the cost calculator for your own ZIP. If your household uses more or less hot water than the medium pattern, your energy use will differ from 3,531 kWh. This page cannot say how much it will differ, because that depends on your own use. The installed-cost range is shown in its own block, with its source and date. It is a modeled range, not a quote.