American EETU-55W 1**
American EETU-55W 1** 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 A. O. Smith EETU-55W 1**.
Certified figures
- Storage volume
- 55gallons
- UEF
- 0.92Uniform energy factor
- First-hour rating
- 64gallonsHot water in the first hour
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| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| EE6U-55HW 1** | 55 | 0.92 | 64 | 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. Over one hour from a full tank, it gave 64 gallons in the test (its first-hour rating). That is 9 gallons more than its tank holds, since it reheats during the hour. Among 477 electric storage models, 74 have a higher first-hour rating. The median electric storage model gives 55 gallons in its first hour.
In tests, 92% of the energy went to hot water, so its UEF is 0.92. Its test simulated a day of medium hot water use (its draw pattern). Its UEF is lower than that of 81 of the 297 electric storage models with its draw pattern. Its UEF is the median for its type and draw pattern. When it reheats water in the test, 98% of the energy it uses ends up in the water.
Its test figures match those of 4 other basic models. They are listed under 4 other brands, one each. For the full group, see the A. O. Smith EETU-55W 1** page.
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
- Advertised figures. We have none on file for this model.