EEMAX SPEX55T
EEMAX SPEX55T 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 SPEX55T.
Certified figures
- Flow at a 67°F rise
- 0.5gallons per minute
- UEF
- 0.97Uniform 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 0.5 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 |
|---|---|---|---|---|
| SPEX55T | 0.97 | 0.5 | 98% | Very small |
UEF is the uniform energy factor. A dash means the model has no such figure.
At a 67°F rise, its flow in the test is 0.5 gallons per minute. The median electric tankless model heats 0.7 gallons per minute by 67°F. Of 337 electric tankless models, 204 have a higher flow than this one.
In tests, 97% of the energy it uses ends up as hot water (UEF 0.97). Its test simulated a day of very small hot water use (its draw pattern). Among 272 electric tankless models on its draw pattern, 37 have a higher UEF. On its draw pattern, the median electric tankless UEF is 0.96. While it heats water, 98% of the energy used goes into the water (its recovery efficiency).
Its test figures match those of 4 other basic models. Each of them is listed under a different brand. For the full group, see the Rheem SPEX55T.
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.