EEMAX SPEX48

The figure of 615 kWh is electricity use, computed by this site and not published by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, of 0.96 with the daily hot-water draw that the DOE test assigns to the very small draw pattern. The source is the DOE CCD, retrieved 2026-09-19. The condition matters: the number describes the test's daily draw and is not a measurement of any household's actual use. The registry also lists a maximum flow rate in gallons per minute of 0.5, which is a capacity rating and is not part of the annual energy calculation. How the annual cost is calculated is explained on the methodology page.

Among the 271 models registered as an electric tankless unit at the very small draw pattern, this one ranks 77th lowest in energy use. Its 615 kWh equals the class median of 615 kWh, a difference of 0 kWh, and it sits in the second-lowest quarter of its class. That rank covers annual energy at the test's draw only. It says nothing about price, durability or flow. The very small draw pattern represents small units, meaning a single bathroom or a point-of-use heater under a sink, so the figure is relevant to readers comparing units for that use. It does not describe a whole-house load or several fixtures running at once. To compare within the class, find a same-class replacement by model number.

The running cost is not written here because it depends on your own utility electricity tariff. The 615 kWh figure is the quantity of energy at the test's draw, and the cost is that quantity multiplied by your rate. The cost calculator on your own ZIP does this arithmetic with your local tariff. The modeled installed-cost range appears in its own block on this page with its source and date, and it is not repeated here. The data available for this model does not include its energy use at any other draw pattern. If the very small draw pattern does not match your space, the selector by fuel, space and size covers other cases.