Aquapower DHC 4-3
Aquapower DHC 4-3 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 Stiebel Eltron DHC 4-3.
Certified figures
- Flow at a 67°F rise
- 0.5gallons per minute
- UEF
- 0.95Uniform 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 0.5 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 4-3 | 0.95 | 0.5 | 98% | Very small |
UEF is the uniform energy factor. A dash means the model has no such figure.
It heats 0.5 gallons per minute of water by 67°F in the test. The median electric tankless model heats 0.7 gallons per minute by 67°F. Among 337 electric tankless models, 204 give more flow at a 67°F rise.
In tests, 95% of the energy went to hot water, so its UEF is 0.95. Its test ran at the very small level of daily hot water use. Its UEF is lower than that of 151 of the 272 electric tankless models with its draw pattern. For its type and draw pattern, the median UEF is 0.96. When it runs, 98% of the energy it uses reaches the water (its recovery efficiency).
Its test figures match those of one other basic model. That one carries the Stiebel Eltron brand name. You can find the whole group on the page for the Stiebel Eltron DHC 4-3.
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.