State UPVA-45E 1**
State UPVA-45E 1** 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 A. O. Smith UPVA-45E 1**.
Certified and advertised figures
- Flow at a 67°F rise
- 0.5gallons per minuteCertified
- Advertised flow
- 0.5gallons per minuteState, at a 67°F rise
- UEF
- 0.92Uniform 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 0.5 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.
Advertised and certified figures
| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| UEF | 0.92 | 0.92 | State | Read Oct 4, 2026 |
| Flow | 0.5 gal/min at a 67°F rise | 0.5 gal/min at a 67°F rise | State | Read Oct 4, 2026 |
Certified figures by listed model
| Model number | UEF | Flow at a 67°F rise (gal/min) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|
| UPVS-45E 1** | 0.92 | 0.5 | 98% | Very small |
UEF is the uniform energy factor. A dash means the model has no such figure.
It warms 0.5 gallons per minute of water from 58°F to 125°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 204 of the 337 electric tankless models.
In the test, 8% of its energy does not reach the hot water (UEF 0.92). 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, 249 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 are 4 more basic models with the same test figures. Of those, one or more are under the A. O. Smith and RELIANCE WATER HEATERS brands. You can find the whole group on the page for the A. O. Smith UPVA-45E 1**.
Also listed as
They carry every figure in the table above.
- Every State 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.