EEMAX SPEX4208T
EEMAX SPEX4208T 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 Rheem SPEX4208T.
Certified and advertised figures
- Flow at a 67°F rise
- 0.4gallons per minuteCertified
- Advertised flow
- 0.2gallons per minuteSupplyHouse, no rise stated
- UEF
- 0.98Uniform 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.
Advertised and certified figures
| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Flow | 0.2 gal/min, no rise stated | 0.4 gal/min at a 67°F rise | SupplyHouse | Archived copy, Feb 29, 2024 |
Certified figures by listed model
| Model number | UEF | Flow at a 67°F rise (gal/min) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|
| SPEX4208T | 0.98 | 0.4 | 96% | Very small |
UEF is the uniform energy factor. A dash means the model has no such figure.
It heats 0.4 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 233 of the 337 electric tankless models.
In tests, 98% of the energy it uses ends up as hot water (UEF 0.98). Its test ran at the very small level of daily hot water use. Of 272 electric tankless models with the same draw pattern, 10 have a higher UEF and 235 a lower one. On its draw pattern, the median electric tankless UEF is 0.96. When it runs, 96% 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 Rheem brand name. For the full group, see the Rheem SPEX4208T page.
Also listed as
They carry every figure in the table above.
- Every EEMAX 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.