Stiebel Eltron Mini 6-2
Stiebel Eltron Mini 6-2 is in the DOE listing as of Oct 26, 2026.
It has a certified UEF of 0.94 and a certified flow of 0.6 gal/min at a 67°F rise.
Its certified flow is 0.6 gal/min at a 67°F rise, while SupplyHouse advertises 2.0 gal/min, no rise stated (Archived copy, Mar 22, 2025), so a comparison at the same rise is not possible.
- Electric tankless water heater
- 1 listed model
ENERGY STAR certification does not cover this type of water heater.
Certified and advertised figures
- Flow at a 67°F rise
- 0.6gallons per minuteCertified
- Advertised flow
- 2.0gallons per minuteSupplyHouse, no rise stated
- UEF
- 0.94Uniform energy factor
Your fixtures at once
Change your hour and flowFlow where you live
The heater gives less flow when colder incoming water needs a bigger rise.
- 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 0.6 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.
Advertised and certified figures
| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Flow | 2.0 gal/min, no rise stated | 0.6 gal/min at a 67°F rise | SupplyHouse | Archived copy, Mar 22, 2025 |
Certified figures by listed model
| Model number | UEF | Flow at a 67°F rise (gal/min) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|
| Mini 6-2 | 0.94 | 0.6 | 98% | Very small |
UEF is the uniform energy factor. A dash means the model has no such figure.
It heats 0.6 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. Its flow at a 67°F rise trails 179 of the 337 electric tankless models.
In the test, 6% of its energy does not reach the hot water (UEF 0.94). In the test, daily hot water use was set to very small (its draw pattern). Of 272 electric tankless models with the same draw pattern, 187 have a higher UEF. 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).
There is one more basic model with the same test figures. That one carries the Aquapower brand name.
Also listed as
They carry every figure in the table above.
- Every Stiebel Eltron basic model
- Every electric tankless water heater certified below 1.0 gallon per minute
- Every electric tankless water heater
Not covered
- Changes to an advertised figure after the date beside it.