Aquapower DHC 8-2

The figure of 615 kWh 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, of 0.96 with the daily hot-water draw that DOE assigns to the very small draw pattern. The condition matters: the number describes that test draw, and the fuel is electricity. A household that draws a different amount of hot water will use a different amount of energy. The source is DOE CCD, retrieved 2026-09-19. The class median is 615 kWh, so this model sits 0 kWh from it. Its position is 77th lowest energy use of 271 models, in the second-lowest quarter of its class.

The registry lists a maximum flow rate in gallons per minute of 0.7 for this model. The very small draw pattern covers small units, such as a single bathroom or a point-of-use heater under a sink. The figure of 615 kWh applies to that kind of use, and it can be compared with the 271 models registered in the same class. It does not describe a unit that serves several fixtures at once. Energy use for other draw patterns is not available on this page, so it is not estimated here. To look for a same-class alternative by model number, use find a same-class replacement. To filter by fuel, space and size, see the water heater selector.

The running cost is not written out here because it depends on your own utility electricity rate, which varies by location. The energy figure of 615 kWh at the test draw is the quantity that your rate multiplies. Because this model sits 0 kWh from the class median of 615 kWh, the class median would give the same annual cost at any rate. The cost calculator applies your ZIP to the figure, and the methodology page explains how the annual cost is calculated. The installed-cost range on this page is shown in its own block, with its source and date, as a modeled range and not a quote.