A. O. Smith HPTV-80 2** vs Lochinvar HPTA-80 2**: which uses less energy?
An asterisk in a model number stands for any character: one filing covers several variants.
At the high draw pattern the Lochinvar HPTA-80 2** uses 1,279 kWh a year and the A. O. Smith HPTV-80 2** 1,654 — 375 kWh (23%) less, about 3,751 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 high draw pattern.
| Figure | A. O. Smith HPTV-80 2** | Lochinvar HPTA-80 2** |
|---|---|---|
| UEF (Uniform Energy Factor) | 3 | 3.88 (better) |
| Energy use per year (kWh) | 1,654 | 1,279 (better) |
| First hour rating (gal) | 93 | 95 |
| Rated storage volume (gal) | 82 | 81 |
| Installed cost range | not published | not published |
| ENERGY STAR certified ENERGY STAR | yes | yes |
| Sound level (dB) ENERGY STAR | 45 | not filed |
| Refrigerant ENERGY STAR | R-513A, GWP 630 | R-134a, GWP 1430 |
| On the market since ENERGY STAR | 2023-07-10 | 2024-03-01 |
| CPSC recall naming it CPSC | none on file | none on file |
DOE CCD · 2026-09-19 ENERGY STAR · 2026-09-19 CPSC · 2026-09-24
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 above.
- No CPSC recall on file names either model (list checked 2026-09-24).
- 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 HPTV-80 2** since 2023-07-10, the Lochinvar HPTA-80 2** since 2024-03-01. A sale date, not a lifespan.
Which should you pick?
- Pick the Lochinvar HPTA-80 2** if running cost matters most: it uses 375 kWh less a year on the same test.
- Pick the A. O. Smith HPTV-80 2** if it is the one you can get installed sooner or for less — on the filed figures it has no advantage over the Lochinvar HPTA-80 2**.
- Neither if your household's busiest hour needs more than 95 gallons of hot water — neither lists more.
Each model on its own
- A. O. Smith HPTV-80 2** 1,654 kWh a year
- Lochinvar HPTA-80 2** 1,279 kWh a year