AMERICAN EETU-55W 1**

This site computed the figure of 3,531 kWh, not the registry. The calculation combines the registry's UEF, the ratio of hot water delivered to energy used, of 0.92 with the test's daily hot-water draw for the medium draw pattern. That pattern stands for a typical three- or four-person household on a busy morning. The energy data comes from DOE CCD, retrieved 2026-09-19, and the fuel is electricity. The figure applies only to the test draw. A household that uses more or less hot water will use a different amount, and the registry gives no value for that case. The steps of the calculation are on the page about how the annual cost is calculated.

The registry compares this electric tank with the 426 models registered in the same class at the medium draw pattern. It ranks 213th lowest for energy use, which places it in the second-lowest quarter of its class. Its 3,531 kWh equals the class median of 3,531 kWh, so the difference is 0 kWh. The registry lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 64 gallons, and a rated volume of 55 gallons. These figures describe a household whose use resembles the test draw. A household whose busiest hour needs more than 64 gallons falls outside what they describe. To compare models in the same class, you can find a same-class replacement by model number.

The running cost is not given in this text because it depends on your own utility electricity rate. Because the difference from the median is 0 kWh, this model would cost the same to run as a median unit in its class at any single rate, provided the draw matches the test. The cost calculator on your own ZIP applies your rate to the 3,531 kWh figure. The modeled installed-cost range appears in its own block on the page, with its source and date. It is a modeled range, not a quote. Energy use at other draw patterns, and in your own home, is not available in the registry data.