AMERICAN PETX-55 1** vs RELIANCE WATER HEATERS HETF-55 1**: which uses less energy?
At the high draw pattern the AMERICAN PETX-55 1** and the RELIANCE WATER HEATERS HETF-55 1** use the same energy, 5,278 kWh a year each, on the same federal test. Both are filed as an electric tank, so the comparison holds; what separates them is below. Enter your ZIP to price either one on your own rate.
Side by side
Compared within one class only: models filed as an electric tank at the high draw pattern.
| Figure | AMERICAN PETX-55 1** | RELIANCE WATER HEATERS HETF-55 1** |
|---|---|---|
| UEF (Uniform Energy Factor) | 0.94 | 0.94 |
| Energy use per year (kWh) | 5,278 | 5,278 |
| First hour rating (gal) | 76 | 75 |
| Rated storage volume (gal) | 55 | 55 |
| Installed cost range | $1,879–$2,711 | $1,879–$2,711 |
| 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 PETX-55 1** if its price or availability suits you — on energy the two are level.
- Pick the RELIANCE WATER HEATERS HETF-55 1** if it is the one you can get installed sooner or for less — on the filed figures it has no advantage over the AMERICAN PETX-55 1**.
- Neither if your household's busiest hour needs more than 76 gallons of hot water — neither lists more. Check whether a 50-gallon heater is enough.
Each model on its own
-
AMERICAN PETX-55 1**
Its filed figures, class position and running cost on your ZIP.
-
RELIANCE WATER HEATERS HETF-55 1**
Its filed figures, class position and running cost on your ZIP.