FRIEDRICH PRO H65 T2 RH310BM vs LOCHINVAR HPTV-66 2**: which uses less energy?
At the high draw pattern the FRIEDRICH PRO H65 T2 RH310BM uses 1,417 kWh a year and the LOCHINVAR HPTV-66 2** 1,550 — 133 kWh (9%) less, about 1,329 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 | FRIEDRICH PRO H65 T2 RH310BM | LOCHINVAR HPTV-66 2** |
|---|---|---|
| UEF (Uniform Energy Factor) | 3.5 (better) | 3.2 |
| Energy use per year (kWh) | 1,417 (better) | 1,550 |
| First hour rating (gal) | 75 | 76 |
| Rated storage volume (gal) | 59 | 68 |
| Installed cost range | $3,449–$4,282 | $3,707–$4,067 |
| ENERGY STAR certified | yes | yes |
| Sound level (dB) | not filed | 45 |
| Refrigerant | R-134a, GWP 1430 | R-513A, GWP 630 |
| On the market since | 2021-01-31 | 2023-07-10 |
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 FRIEDRICH PRO H65 T2 RH310BM since 2021-01-31, the LOCHINVAR HPTV-66 2** since 2023-07-10. A sale date, not a lifespan.
Which should you pick?
- Pick the FRIEDRICH PRO H65 T2 RH310BM if running cost matters most: it uses 133 kWh less a year on the same test.
- Pick the LOCHINVAR HPTV-66 2** if you need more hot water in your busiest hour: it lists a first hour rating of 76 gallons against 75.
- Neither if your household's busiest hour needs more than 76 gallons of hot water — neither lists more.
Each model on its own
-
FRIEDRICH PRO H65 T2 RH310BM
Its filed figures, class position and running cost on your ZIP.
-
LOCHINVAR HPTV-66 2**
Its filed figures, class position and running cost on your ZIP.