Rheem SPEX60
Rheem SPEX60 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 SPEX55.
Certified and advertised figures
- Flow at a 67°F rise
- 0.6gallons per minuteCertified
- Advertised flow
- 2.0gallons per minuteRheem, no rise stated
- UEF
- 0.96Uniform 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 | Rheem | Read Oct 5, 2026 |
Certified figures by listed model
| Model number | UEF | Flow at a 67°F rise (gal/min) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|
| RTEH60 | 0.96 | 0.6 | 96% | 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 0.6 gallons per minute. 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 tests, 96% of the energy it uses ends up as hot water (UEF 0.96). The daily hot water use in the test, called its draw pattern, was very small. Of 272 electric tankless models with the same draw pattern, 77 have a higher UEF. For its type and draw pattern, its UEF sits at the median. When it runs, 96% of the energy it uses reaches the water (its recovery efficiency).
Its test figures match those of 5 other basic models. Of those, one or more are under the EEMAX and KWICKSHOT brands. You can find the whole group on the page for the Rheem SPEX55.
Also listed as
They carry every figure in the table above.
- Every Rheem 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.