Aquapower Mini 2.5-1

This site computed the figure of 615 kWh; the registry does not publish it. The calculation combines the registry's UEF, the ratio of hot water delivered to energy used, of 0.96 with the DOE test's daily hot-water draw for the very small draw pattern. The source is DOE CCD, retrieved 2026-09-19. The figure applies only at that test draw. A household that draws more or less hot water will use a different amount, and the registry gives no value for other usage. The steps are described in how the annual cost is calculated.

Among the 271 electric tankless models registered at the very small draw pattern, this unit ranks 77th lowest for energy use, in the second-lowest quarter of its class. Its use is equal to the class median of 615 kWh, so the difference is 0 kWh. The listed maximum flow rate in gallons per minute is 0.3. That suits small units - a single bathroom, or a point-of-use heater under a sink - which is the use the very small draw pattern represents. Demand above 0.3 gallons per minute is outside what the registry lists for this model.

The running cost is not stated here because it depends on your own utility electricity tariff. Multiplying 615 kWh by your rate gives the yearly cost at the test draw, and the cost calculator on your own ZIP does this for you. The modeled installed-cost range appears in its own block on the page, with its source and date, and is not repeated here. If you need another unit in the same class, you can find a same-class replacement by model number starting from Mini 2.5-1. Measured household use for this model is not available.