Stiebel Eltron DHC 10-2

The registry does not print the 615 kWh figure. This site calculated it from the registry's UEF, the ratio of hot water delivered to energy used, which is 0.96 for this model. The other input is the DOE test's daily hot-water draw for the very small draw pattern. The source is the DOE CCD, retrieved 2026-09-19. The figure applies only at that test draw. If a home draws more hot water each day, its annual use will be different, and this page has no figure for that case. Because the figure comes from 0.96 and a fixed test draw, it shows rated use, not metered use in a particular home. The steps are explained in how the site calculates annual energy and cost.

The very small draw pattern covers small units that serve a single bathroom, or a point-of-use heater under a sink. For this model, the registry lists a maximum flow rate in gallons per minute of 1. When checking a replacement for a similar location, a plumber can compare that flow rate and the 615 kWh figure directly. In its class, the model ranks 77th lowest in energy use of 271. That puts it in the second-lowest quarter of its class for energy use. If a home's daily hot-water use is above the very small pattern, this figure does not describe it. The water heater selector by fuel, space and size covers other classes. To stay within this class, use the same-class replacement search by model number.

This text does not give a running cost. The cost depends on your own utility electricity tariff. The page calculates it from your ZIP by applying your local rate to the 615 kWh rated use at the very small draw pattern. You can check the result in the running-cost calculator for your own ZIP. The installed price range is shown in its own block, with its source and date. That range is a modeled installed cost, not a quote, and this text does not repeat its figures. Neither the running cost nor the installed range affects the class rank of 77th of 271, because that rank is based only on annual energy use at the test draw.