Westinghouse ET011

This site calculated the 628 kWh figure; it is not copied from 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 this model the UEF is 0.94. The source is the DOE Compliance Certification Database (CCD), retrieved 2026-09-19. The very small draw pattern covers small units, such as those serving a single bathroom or a point-of-use heater under a sink. The figure applies only at that test draw. It does not describe a household that uses more hot water each day than the test assumes. See how the annual cost is calculated for how this figure becomes a yearly cost.

This model ranks 188th lowest in energy use of the 271 models registered as an electric tankless unit at the very small draw pattern. That rank puts it in the second-highest quarter of its class for energy use. Its 628 kWh sits 13 kWh above the class median of 615 kWh. The registry lists its maximum flow rate in gallons per minute as 1.2. The draw pattern's scope is one bathroom or a point-of-use heater under a sink. A plumber or seller confirming a listing can check the UEF, the flow rate and the draw pattern against the registry entry for ET011. To compare other models in the same class, use find a same-class replacement by model number.

The draw pattern also shows where the figure stops applying. A home that needs more hot water than one bathroom or one sink uses falls outside the very small draw pattern. The 628 kWh figure does not describe that home. Models tested at larger draw patterns belong to other classes, and the selector by fuel, space and size lists them. This text does not state a running cost, because that cost depends on your own utility's electricity tariff. The page calculates it from your ZIP. You can also run the cost calculator on your own ZIP. The installed price range on this page is a modeled range, not a quote.