Friedrich PROPH65 T0 RH120-M vs Stiebel Eltron Accelera 300 E: which uses less energy?
At the medium draw pattern the Stiebel Eltron Accelera 300 E uses 1,025 kWh a year and the Friedrich PROPH65 T0 RH120-M 1,041 — 16 kWh (2%) less, about 164 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 | Friedrich PROPH65 T0 RH120-M | Stiebel Eltron Accelera 300 E |
|---|---|---|
| UEF (Uniform Energy Factor) | 3.12 | 3.17 (better) |
| Energy use per year (kWh) | 1,041 | 1,025 (better) |
| First hour rating (gal) | 63 | 66 |
| Rated storage volume (gal) | 59 | 58 |
| Installed cost range NLR REMDB | $3,406–$3,902 | $3,379–$3,943 |
| ENERGY STAR certified ENERGY STAR | yes | not matched |
| Refrigerant ENERGY STAR | R-134a, GWP 1430 | not filed |
| On the market since ENERGY STAR | 2022-04-21 | not filed |
| CPSC recall naming it CPSC | none on file | none on file |
DOE CCD · 2026-09-19 NLR REMDB · 2026-04-01 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).
- The actual warranty term is printed in each model’s documentation, not in any registry.
Which should you pick?
- Pick the Stiebel Eltron Accelera 300 E if running cost matters most: it uses 16 kWh less a year on the same test.
- Pick the Friedrich PROPH65 T0 RH120-M if it is the one you can get installed sooner or for less — on the filed figures it has no advantage over the Stiebel Eltron Accelera 300 E.
- Neither if your household's busiest hour needs more than 66 gallons of hot water — neither lists more.
Each model on its own
- Friedrich PROPH65 T0 RH120-M 1,041 kWh a year
- Stiebel Eltron Accelera 300 E 1,025 kWh a year