RELIANCE WATER HEATERS PESX-50 1**
RELIANCE WATER HEATERS PESX-50 1** is in the DOE listing as of Oct 19, 2026.
- Electric storage 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 PESX-50 1**.
Certified figures
- Storage volume
- 46gallons
- UEF
- 0.92Uniform energy factor
- First-hour rating
- 70gallonsHot water in the first hour
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| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| 12-50-DXRS 1** | 46 | 0.92 | 70 | 98% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 46 gallons in the test, 4 gallons less than its 50-gallon sold size. It delivers 70 gallons of hot water in the test's first hour. That is 24 gallons more than its tank holds, since it reheats during the hour. Of 477 electric storage models, 47 give more hot water in the first hour. Among electric storage models, the median first-hour rating is 55 gallons.
In tests, 92% of the energy it uses ends up as hot water (UEF 0.92). The daily hot water use in the test, called its draw pattern, was medium. Among 297 electric storage models on its draw pattern, 81 have a higher UEF. On its draw pattern, its UEF is also the median electric storage UEF. The water took in 98% of the energy used to reheat it (its recovery efficiency).
Its test figures match those of 3 other basic models. Those basic models are sold with A. O. Smith, American, and State as their brand names. For the full group, see the A. O. Smith PESX-50 1**.
Also listed as
They carry every figure in the table above.
- Every RELIANCE WATER HEATERS basic model
- Every 50-gallon electric storage water heater
- Every electric storage water heater
Not covered
- Advertised figures. We have none on file for this model.