A. O. SMITH HPTS-50 2** vs Eco-Logical ECO-50HPM1A: which uses less energy?
At the medium draw pattern the A. O. SMITH HPTS-50 2** uses 855 kWh a year and the Eco-Logical ECO-50HPM1A 866 — 11 kWh (1%) less, about 114 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 | A. O. SMITH HPTS-50 2** | Eco-Logical ECO-50HPM1A |
|---|---|---|
| UEF (Uniform Energy Factor) | 3.8 (better) | 3.75 |
| Energy use per year (kWh) | 855 (better) | 866 |
| First hour rating (gal) | 65 | 69 |
| Rated storage volume (gal) | 46 | 47 |
| Installed cost range | $3,062–$4,459 | $3,089–$4,419 |
| ENERGY STAR certified | yes | yes |
| Sound level (dB) | not filed | 49 |
| Refrigerant | R-134a, GWP 1430 | R-134a, GWP 1430 |
| On the market since | 2022-06-06 | 2024-10-15 |
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.
- Both are ENERGY STAR certified, which requires a manufacturer warranty of at least six years; the actual term for each model is not published.
- Time on the market, as filed with ENERGY STAR: the A. O. SMITH HPTS-50 2** since 2022-06-06, the Eco-Logical ECO-50HPM1A since 2024-10-15. A sale date, not a lifespan.
Which should you pick?
- Pick the A. O. SMITH HPTS-50 2** if running cost matters most: it uses 11 kWh less a year on the same test.
- Pick the Eco-Logical ECO-50HPM1A if you need more hot water in your busiest hour: it lists a first hour rating of 69 gallons against 65.
- Neither if your household's busiest hour needs more than 69 gallons of hot water — neither lists more. Check whether a 50-gallon heater is enough.
Each model on its own
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A. O. SMITH HPTS-50 2**
Its filed figures, class position and running cost on your ZIP.
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Eco-Logical ECO-50HPM1A
Its filed figures, class position and running cost on your ZIP.