Ariston ENS50T-DR***
Ariston ENS50T-DR*** 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 AMERICAN STANDARD WATER HEATERS ENS50T-DR***.
Certified figures
- Storage volume
- 46gallons
- UEF
- 0.92Uniform energy factor
- First-hour rating
- 61gallonsHot water in the first hour
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| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| ESDR50M-* | 46 | 0.92 | 61 | 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. Over one hour from a full tank, it gave 61 gallons in the test (its first-hour rating). Its tank holds 46 gallons, so reheating adds 15 gallons during the first hour. In the first hour, 137 of the 477 electric storage models give more hot water. The median electric storage model gives 55 gallons in its first hour.
In the test, 8% of its energy does not reach the hot water (UEF 0.92). Its test simulated a day of medium hot water use (its draw pattern). 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. Of the energy spent to reheat water, 98% goes into it (its recovery efficiency).
All of its test figures are shared by 2 other basic models. The AMERICAN STANDARD WATER HEATERS and Lennox brands list one or more of them. For the full group, see the AMERICAN STANDARD WATER HEATERS ENS50T-DR*** page.
Also listed as
They carry every figure in the table above.
- Every Ariston 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.