STATE UPVA-35K 1**

The 642 kWh figure is computed by this site, not published 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 0.92, and the source is DOE CCD data retrieved 2026-09-19. The figure holds at that test draw only. A household drawing more or less hot water each day will use a different amount, and that amount is not available here. Within its class the model ranks 249th lowest in energy use of 271, which places it in the highest quarter of its class for energy use. The inputs are set out in how the annual cost is calculated.

The very small draw pattern covers small units: a single bathroom, or a point-of-use heater under a sink. This model's registered maximum flow rate in gallons per minute is 0.4. A reader checking it for a single sink or a similar light load is comparing it against the right class. A household that expects it to serve several fixtures at once is outside the draw pattern behind these figures. How it would perform there is not available in the registry data. Other models tested at this same draw pattern can be listed through same-class replacement by model number. Units at other draw patterns can be filtered with the selector by fuel, space and size.

The running cost is not stated in this text. It depends on your own utility electricity tariff, so the page computes it from your ZIP instead of estimating it. The cost calculator on your own ZIP applies your rate to 642 kWh a year. Because the model sits above its class median, as noted above, its running cost at the same rate is higher than a median unit's. The size of that difference also depends on your rate. The installed price range on this page is a separate block: a modeled installed-cost range with its own source and date, not a quote. Running cost at a daily draw other than the federal test's is not available.