Stiebel Eltron Accelera 220 E

The registry lists a UEF, the ratio of hot water delivered to energy used, of 2.81 for this model. This site computed the figure of 799 kWh from that UEF and the DOE test's daily hot-water draw for the low draw pattern. The registry does not publish the annual figure itself. It applies only to electricity and only at that test draw. The low draw pattern describes a one- or two-person household. Real use in a home can differ from the test draw, and this page has no data on that difference. The figure was retrieved from DOE CCD on 2026-09-19. The method used to calculate annual cost is documented separately.

Among the 163 models registered as an electric tank at the low draw pattern, the median use is 2,439 kWh. This model sits 1,640 kWh below that median, at 2nd lowest of 163. That places it in the lowest quarter of its class for energy use. The comparison covers only electric tanks at the low draw pattern. It says nothing about models of other fuels or draw patterns. The first hour rating, the gallons of hot water available in the first hour from a full tank, is 41 gallons. Rated volume is 58 gallons. These are the capacity figures the registry lists for the Accelera 220 E. A selector by fuel, space and size can filter models on such figures.

The figure of 799 kWh belongs to the low draw pattern. It suits a household whose hot-water use matches that pattern. It does not apply to a household with a larger daily draw, and the data here does not show how much the figure would change. Running cost is not stated on this page. It depends on your own electricity rate, and no rate is assumed. Multiply the annual energy by your local price per kilowatt-hour, or use the cost calculator on your own ZIP. The installed price range is not published. This model's ratings lie outside the range the cost database's model was fitted on, and that range is not stretched past it. For a same-class swap, find a replacement by model number.