AMERICAN ENT-55 1** vs Rheem PROE55 T2 RH94: which uses less energy?
At the medium draw pattern the AMERICAN ENT-55 1** uses 3,493 kWh a year and the Rheem PROE55 T2 RH94 3,531 — 38 kWh (1%) less, about 380 kWh over ten years. Both are filed as an electric tank, so the comparison holds. Enter your ZIP below to price the difference.
Side by side
Compared within one class only: models filed as an electric tank at the medium draw pattern.
| Figure | AMERICAN ENT-55 1** | Rheem PROE55 T2 RH94 |
|---|---|---|
| UEF (Uniform Energy Factor) | 0.93 (better) | 0.92 |
| Energy use per year (kWh) | 3,493 (better) | 3,531 |
| First hour rating (gal) | 72 | 72 |
| Rated storage volume (gal) | 55 | 55 |
| Installed cost range | $1,872–$2,495 | $1,866–$2,279 |
| ENERGY STAR certified | not matched | not matched |
What it costs to run
Reliability
Not published: Reliability, failure rates and each model’s actual warranty term.
The registries these figures come from certify energy performance under a federal test; none of them records how long a unit lasts or how often it fails, so this page does not rank the two on reliability.
What is here instead:
- The filed efficiency, capacity and tank size of both models, side by side below.
- The actual warranty term is printed in each model’s documentation, not in any registry.
Which should you pick?
- Pick the AMERICAN ENT-55 1** if running cost matters most: it uses 38 kWh less a year on the same test.
- Pick the Rheem PROE55 T2 RH94 if the installed price matters more than the running cost: its modeled installed range is $1,866–$2,279 against $1,872–$2,495.
- Neither if your household's busiest hour needs more than 72 gallons of hot water — neither lists more. Check whether a 50-gallon heater is enough.
Each model on its own
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AMERICAN ENT-55 1**
Its filed figures, class position and running cost on your ZIP.
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Rheem PROE55 T2 RH94
Its filed figures, class position and running cost on your ZIP.