EEMAX SPEX90

The 615 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, with the DOE test's daily hot-water draw for the very small draw pattern. For this model the UEF is 0.96, from the DOE CCD as retrieved on 2026-09-19. The figure holds only at that test draw. It does not describe a household that draws more hot water each day than the test assumes. The registry also lists a maximum flow rate in gallons per minute of 0.9 for this unit. The steps that turn these inputs into a yearly figure are set out in how the annual cost is calculated.

The class for comparison is the 271 models registered as an electric tankless unit at the very small draw pattern. Among them, this unit ranks 77th lowest for energy use. That places it in the second-lowest quarter of its class. Its 615 kWh is 0 kWh from the class median of 615 kWh, so it is equal to the median. The very small draw pattern covers small units: a single bathroom, or a point-of-use heater under a sink. The 615 kWh figure applies to that kind of use only. This page has no tested figure for this unit at a larger draw pattern, so that value is not available. To match this unit with another in the same class, use find a same-class replacement by model number. To compare other sizes, use the selector by fuel, space and size.

This page does not state a running cost in the text. The cost of 615 kWh of electricity a year depends on the reader's own utility electricity tariff. The page therefore computes it from the reader's ZIP. The cost calculator on the reader's own ZIP applies that tariff to the same 615 kWh at the very small draw pattern. The installed price range appears in its own block on this page, with its source and date. It is a modeled installed-cost range, not a quote. Neither the running cost nor the installed range changes the energy figure. That figure stays tied to the DOE test's daily draw and the UEF of 0.96.