American ENLB-40 1**
American ENLB-40 1** is in the DOE listing as of Oct 19, 2026.
- Electric storage water heater
- 6 listed models
ENERGY STAR certification does not cover this type of water heater.
Its figures are also listed under A. O. Smith ENLB-40 1**.
Certified figures
- Storage volume
- 35gallons
- UEF
- 0.92Uniform energy factor
- First-hour rating
- 51gallonsHot water in the first hour
Your busiest hour
Change your hourAdvertised and certified figures
| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Size | 38 gal, nominal size | 35 gal storage volume | American | Read Oct 4, 2026 |
| Size | 34.7 gal | 35 gal storage volume | American | Read Oct 4, 2026 |
| UEF | 0.92 | 0.92 | American | Read Oct 4, 2026 |
| First-hour rating | 51 gal | 51 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 |
|---|---|---|---|---|---|
| E6N-40LB 1** | 35 | 0.92 | 51 | 98% | Medium |
| LDCE32-40L-045DV 1** | 35 | 0.92 | 51 | 98% | Medium |
| LDCE32-40L-050DV 1** | 35 | 0.92 | 51 | 98% | Medium |
| LDCE32-40L-055DV 1** | 35 | 0.92 | 51 | 98% | Medium |
| LDCE32-40L-060DV 1** | 35 | 0.92 | 51 | 98% | Medium |
| NE3F40LBD 1** | 35 | 0.92 | 51 | 98% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 35 gallons in the test, 3 gallons less than its 38-gallon sold size. Over one hour from a full tank, it gave 51 gallons in the test (its first-hour rating). Reheating lets it give 16 gallons beyond the 35 gallons in its tank. Of 477 electric storage models, 286 give more hot water in the first hour. Among electric storage models, the median first-hour rating is 55 gallons.
In the test, 8% of its energy does not reach the hot water (UEF 0.92). Its test ran at the medium level of daily hot water use. Its UEF is lower than that of 81 of the 297 electric storage models with its draw pattern. For its type and draw pattern, its UEF sits at the median. The water took in 98% of the energy used to reheat it (its recovery efficiency).
All 6 of its model numbers carry the same certified figures. Its test figures match those of 11 other basic models. Besides this brand, 8 brands list one or more of them. You can find the whole group on the page for the A. O. Smith ENLB-40 1**.
Also listed as
They carry every figure in the table above.
- Every American basic model
- Every 40-gallon electric storage water heater
- Every electric storage water heater
Not covered
- Changes to an advertised figure after the date beside it.