Aquapower Mini 3.5-1
Aquapower Mini 3.5-1 is in the DOE listing as of Oct 19, 2026.
- Electric tankless water heater
- 1 listed model
ENERGY STAR certification does not cover this type of water heater.
Its figures are also listed under A. O. Smith UPVA-40Y 1**.
Certified figures
- Flow at a 67°F rise
- 0.4gallons per minute
- UEF
- 0.93Uniform energy factor
Your fixtures at once
Change your hour and flowFlow where you live
Colder incoming water needs a bigger rise, so the heater gives less flow.
- Cold water
- Cold water must be at least 10°F colder than the hot water setting.
- Flow estimate
- The estimate uses the lowest certified flow among the listed models. It is about 0.4 gal/min at a 70°F rise.
Flow limits
- The estimate excludes the flow needed to turn the heater on, heat lost in pipes, and installation.
- Cold water from a well or long pipe run can differ from the temperature you enter.
- Without a stated flow limit, estimates for warmer water may exceed the heater’s actual flow.
Certified figures by listed model
| Model number | UEF | Flow at a 67°F rise (gal/min) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|
| AQM 3.5-1 | 0.93 | 0.4 | 98% | Very small |
UEF is the uniform energy factor. A dash means the model has no such figure.
It warms 0.4 gallons per minute of water from 58°F to 125°F in the test. The median flow among electric tankless models is 0.7 gallons per minute. Of 337 electric tankless models, 233 have a higher flow than this one.
In tests, 93% of the energy it uses ends up as hot water (UEF 0.93). Its test ran at the very small level of daily hot water use. Of 272 electric tankless models with the same draw pattern, 217 have a higher UEF and 23 a lower one. A UEF of 0.96 is the median for its type and draw pattern. Of the energy it spends heating water, 98% ends up in it (its recovery efficiency).
Its test figures match those of 3 other basic models. Of those, one or more are under the A. O. Smith, State, and Stiebel Eltron brands. You can find the whole group on the page for the A. O. Smith UPVA-40Y 1**.
Also listed as
They carry every figure in the table above.
- Every Aquapower basic model
- Every electric tankless water heater certified below 1.0 gallon per minute
- Every electric tankless water heater
Not covered
- Advertised figures. We have none on file for this model.