AMERICAN STANDARD WATER HEATERS ENS30L-*
AMERICAN STANDARD WATER HEATERS ENS30L-* is in the DOE listing as of Oct 26, 2026.
It has a labeled size of 30 gallons, a certified storage volume of 27 gallons, a certified UEF of 0.93, and a certified first-hour rating of 44 gallons of hot water.
Its advertised UEF of 0.93 from AMERICAN STANDARD WATER HEATERS matches the certified 0.93 (Read Oct 5, 2026).
- Electric storage water heater
- 1 listed model
ENERGY STAR certification does not cover this type of water heater.
Certified figures
- Storage volume
- 27gallons
- UEF
- 0.93Uniform energy factor
- First-hour rating
- 44gallonsHot water in the first hour
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| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Size | 30 gal, nominal size | 27 gal storage volume | AMERICAN STANDARD WATER HEATERS | Read Oct 5, 2026 |
| Size | 27 gal | 27 gal storage volume | AMERICAN STANDARD WATER HEATERS | Read Oct 5, 2026 |
| UEF | 0.93 | 0.93 | AMERICAN STANDARD WATER HEATERS | Read Oct 5, 2026 |
| First-hour rating | 44 gal | 44 gal | AMERICAN STANDARD WATER HEATERS | Read Oct 5, 2026 |
Certified figures by listed model
| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| ENS30L-* | 27 | 0.93 | 44 | 98% | Low |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 27 gallons in the test, 3 gallons less than its 30-gallon sold size. It delivers 44 gallons of hot water in the test's first hour. That is 17 gallons more than its tank holds, since it reheats during the hour. In the first hour, 392 of the 477 electric storage models give more hot water. The median electric storage model gives 55 gallons in the first hour of the test.
In the test, 7% of its energy does not reach the hot water (UEF 0.93). In the test, daily hot water use was set to low (its draw pattern). Of 157 electric storage models with the same draw pattern, 2 have a higher UEF and 145 a lower one. On its draw pattern, the median electric storage UEF is 0.92. The water took in 98% of the energy used to reheat it (its recovery efficiency).
There are 2 more basic models with the same test figures. Of those, one or more are under the Ariston and Lennox brands.
Also listed as
They carry every figure in the table above.
- Every AMERICAN STANDARD WATER HEATERS basic model
- Every 30-gallon electric storage water heater
- Every electric storage water heater
Not covered
- Changes to an advertised figure after the date beside it.