American ENLB-50 1**
American ENLB-50 1** is in the DOE listing as of Oct 19, 2026.
- Electric storage water heater
- 3 listed models
ENERGY STAR certification does not cover this type of water heater.
Its figures are also listed under A. O. Smith ENLB-50 1**.
Certified figures
- Storage volume
- 44gallons
- UEF
- 0.93Uniform energy factor
- First-hour rating
- 60gallonsHot water in the first hour
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| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Size | 48 gal, nominal size | 44 gal storage volume | American | Read Oct 4, 2026 |
| Size | 44 gal | 44 gal storage volume | American | Read Oct 4, 2026 |
| UEF | 0.93 | 0.93 | American | Read Oct 4, 2026 |
| First-hour rating | 60 gal | 60 gal | American | Read Oct 4, 2026 |
Certified figures by listed model
| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| E10N-50LB 1** | 44 | 0.93 | 60 | 98% | Medium |
| E6N-50LB 1** | 44 | 0.93 | 60 | 98% | Medium |
| E6N50LB 1** | 44 | 0.93 | 60 | 98% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 44 gallons in the test, 4 gallons less than its 48-gallon sold size. It delivers 60 gallons of hot water in the test's first hour. That is 16 gallons more than its tank holds, since it reheats during the hour. Among 477 electric storage models, 145 have a higher first-hour rating. The median electric storage model gives 55 gallons in its first hour.
In tests, 93% of the energy it uses ends up as hot water (UEF 0.93). Its test simulated a day of medium hot water use (its draw pattern). Among 297 electric storage models on its draw pattern, 20 have a higher UEF. A UEF of 0.92 is the median for its type and draw pattern. The water took in 98% of the energy used to reheat it (its recovery efficiency).
It is sold as E10N-50LB 1**, E6N-50LB 1**, and E6N50LB 1**. There are 5 more basic models with the same test figures. They are listed under 5 other brands, one each. You can find the whole group on the page for the A. O. Smith ENLB-50 1**.
Also listed as
They carry every figure in the table above.
- Every American basic model
- Every 50-gallon electric storage water heater
- Every electric storage water heater
Not covered
- Changes to an advertised figure after the date beside it.