EEMAX SPEX35
EEMAX SPEX35 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 SPEX35.
Certified figures
- Flow at a 67°F rise
- 0.4gallons per minute
- UEF
- 0.95Uniform energy factor
Your fixtures at once
Change your hour and flowFlow where you live
A bigger rise from colder incoming water leaves the heater with 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 |
|---|---|---|---|---|
| SPEX35 | 0.95 | 0.4 | 94% | 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. Of 337 electric tankless models, 233 have a higher flow than this one.
In the test, 5% of its energy does not reach the hot water (UEF 0.95). 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, 151 have a higher UEF and 85 a lower one. For its type and draw pattern, the median UEF is 0.96. When it runs, 94% of the energy it uses reaches the water (its recovery efficiency).
There are 2 more basic models with the same test figures. Those basic models are sold with KWICKSHOT and Rheem as their brand names. For the full group, see the Rheem SPEX35.
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
- Advertised figures. We have none on file for this model.