American ENT-55 1**
American ENT-55 1** is in the DOE listing as of Oct 19, 2026.
- Electric storage water heater
- 9 listed models
ENERGY STAR certification does not cover this type of water heater.
Its figures are also listed under A. O. Smith ENT-55 1**.
Certified figures
- Storage volume
- 55gallons
- UEF
- 0.93Uniform energy factor
- First-hour rating
- 72gallonsHot water in the first hour
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| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Size | 55 gal, nominal size | 55 gal storage volume | American | Read Oct 4, 2026 |
| Size | 55 gal | 55 gal storage volume | American | Read Oct 4, 2026 |
| UEF | 0.93 | 0.93 | American | Read Oct 4, 2026 |
| First-hour rating | 72 gal | 72 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-55H 1** | 55 | 0.93 | 72 | 98% | Medium |
| E6N-55H 1** | 55 | 0.93 | 72 | 98% | Medium |
| E8N-55H 1** | 55 | 0.93 | 72 | 98% | Medium |
| LDCE32-50R-030DV 1** | 55 | 0.93 | 72 | 98% | Medium |
| LDCE32-50R-040DV 1** | 55 | 0.93 | 72 | 98% | Medium |
| LDCE32-50R-045DV 1** | 55 | 0.93 | 72 | 98% | Medium |
| LDCE32-50R-050DV 1** | 55 | 0.93 | 72 | 98% | Medium |
| LDCE32-50R-055DV 1** | 55 | 0.93 | 72 | 98% | Medium |
| LDCE32-50R-060DV 1** | 55 | 0.93 | 72 | 98% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
Sold as 55 gallons, it holds 55 gallons in the test. Starting full, it gives 72 gallons of hot water in its first hour of use. That is 17 gallons more than its tank holds, since it reheats during the hour. Among 477 electric storage models, 37 have a higher first-hour rating. 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). Its test simulated a day of medium hot water use (its draw pattern). Its UEF is lower than that of 20 of the 297 electric storage models with its draw pattern. 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).
All 9 of its model numbers carry the same certified figures. There are 4 more basic models with the same test figures. Each of the 4 other brands lists one of them. You can find the whole group on the page for the A. O. Smith ENT-55 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.