EEMAX SPEX55T

The 609 kWh figure is computed by this site, not by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, of 0.97 with the DOE test's daily hot-water draw for this draw pattern. The source is DOE CCD, retrieved 2026-09-19. The unit is an electric tankless heater with a maximum flow rate in gallons per minute of 0.5. The figure is a modeled value at the test's draw and applies only to the very small draw pattern. It is not a measurement of any household's use, and a different draw pattern would give a different annual figure that this page does not show.

The class for this comparison is the 271 models registered as an electric tankless unit at the very small draw pattern. Within it, this model uses 6 kWh less per year than the class median of 615 kWh, and it ranks 37th lowest in energy use of 271. That places it in the lowest quarter of its class for energy use. The comparison is limited to annual energy at the federal test's draw. It does not cover purchase price, and it does not cover hot-water delivery beyond the listed maximum flow rate of 0.5 gallons per minute. A lower rank here means lower annual energy use, not a higher score on any other measure.

The very small draw pattern covers small units - a single bathroom, or a point-of-use heater under a sink. The 609 kWh figure is relevant to that kind of use. It does not describe a household with larger hot-water needs, because this page has no figure for other draw patterns. Running cost is not written here because it depends on your own utility electricity tariff. Enter your ZIP in the cost calculator to apply your rate to 609 kWh. The page on how the annual cost is calculated sets out the method. If you need a unit in the same class, you can find a same-class replacement by model number. The modeled installed-cost range appears in its own block, with its source and date.