Stiebel Eltron DHC 3-1 Trend

The registry does not print the 603 kWh figure. This site computed it from two inputs. The first is the unit's UEF, the ratio of hot water delivered to energy used, which the registry lists at 0.98. The second is the DOE test's daily hot-water draw for the very small draw pattern. The registry values come from the DOE CCD and were retrieved 2026-09-19. Among the 271 electric tankless units registered at this draw pattern, the DHC 3-1 Trend ranks 10th lowest in energy use. That puts it in the lowest quarter of its class, and its gap to the median is given above. The method behind the annual energy and cost figures sets out each step of that calculation.

The very small draw pattern covers small units, such as a heater for a single bathroom or a point-of-use heater under a sink. The DHC 3-1 Trend lists a maximum flow rate in gallons per minute of 0.3. A home that needs hot water at several fixtures at once falls outside the use this test pattern describes. The registry gives no energy figure for this model at a larger draw pattern, so that result is not available. If you are matching a unit on the same class basis, you can find a same-class replacement by model number. If you are comparing other fuels or sizes, you can use the selector by fuel, space and size.

This text does not state a running cost because the cost depends on your own utility electricity tariff. The page computes the cost from your ZIP and the 603 kWh yearly figure for the very small draw pattern. Two readers on different tariffs will therefore see different costs for the same DHC 3-1 Trend. To see your figure, enter your ZIP in the cost calculator for your own ZIP. The modeled installed-cost range appears in its own block with its source and date, and it is not a quote. The cost result applies at the federal test's daily draw, not at your household's actual hot-water use, which the data does not record.