Rheem SPEX60T

This site calculated the 609 kWh figure; the registry does not publish it. The calculation uses the registry's UEF, the ratio of hot water delivered to energy used, and the DOE test's daily hot-water draw for the very small pattern. The UEF for this model is 0.97. Both inputs come from DOE's Compliance Certification Database (CCD), retrieved 2026-09-19. The figure only describes use under test conditions. A household that uses more hot water each day than the test assumes will use more than 609 kWh. The registry does not say how much more. For each step, see how the annual energy and cost figures are calculated.

The class for this model is the 271 models registered as an electric tankless unit at the very small draw pattern. It ranks 37th lowest for energy use in that class. The very small pattern covers small units, meaning a single bathroom or a point-of-use heater under a sink. The registry lists a maximum flow rate in gallons per minute of 0.6 for this model. The registry figures describe that single-bathroom or under-sink load and do not describe a whole-house load. The registry does not say how the unit performs with several fixtures running at once. For a larger load, the selector by fuel, space and size lists other classes.

The running cost is not stated in the text because it depends on your own utility's electricity tariff. The page calculates it from your ZIP, using 609 kWh as the energy input. You can run the same calculation in the running-cost calculator for your ZIP. Compared with a median model in the same class, the cost gap at your rate comes from the 6 kWh difference noted above. It does not come from the whole 609 kWh. The installed price range has its own block, with its source and date. That range is modeled and is not a quote. To match a unit in the same class, find a same-class replacement by model number.