ECOSMART ECOS 12

The figure of 622 kWh is computed by this site, not published by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, of 0.95 with the DOE test's daily hot-water draw for the very small draw pattern. The registry also lists a maximum flow rate in gallons per minute of 1.2 for this unit. The source is the DOE CCD, retrieved 2026-09-19. The figure applies only at the federal test's daily draw. A household that draws more or less hot water than that test will use a different amount, and this page has no measured data for any single home. The steps behind the calculation are set out in how the annual cost is calculated.

Within its class, the ECOSMART ECOS 12 ranks 152nd lowest energy use of 271, which places it in the second-highest quarter of its class for energy use. Its 622 kWh sits 7 kWh above the class median of 615 kWh, measured at the same very small draw pattern. The data does not say whether that gap matters in practice; it only states the direction and size of the difference. The draw pattern covers small units: a single bathroom, or a point-of-use heater under a sink. The figure does not describe a home that needs hot water for several fixtures at once, because that use is outside this pattern. For a different size or fuel, the selector by fuel, space and size covers other cases.

The running cost is not written here because it depends on your own utility electricity tariff, and this page does not estimate it. The quantity to price is 622 kWh a year at the very small draw pattern. The cost calculator on your own ZIP applies your local rate to that 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, and it is not repeated in this text. If you need a comparable unit, you can find a same-class replacement by model number. The registry values used for the ECOSMART ECOS 12 are a UEF of 0.95 and a maximum flow rate of 1.2.