Noritz ME50HPT vs Ruud MR50245 C: which uses less energy?
At the medium draw pattern the Noritz ME50HPT uses 939 kWh a year and the Ruud MR50245 C 3,569 — 2,631 kWh (74%) less, about 26,307 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 | Noritz ME50HPT | Ruud MR50245 C |
|---|---|---|
| UEF (Uniform Energy Factor) | 3.46 (better) | 0.91 |
| Energy use per year (kWh) | 939 (better) | 3,569 |
| First hour rating (gal) | 58 | 57 |
| Rated storage volume (gal) | 47 | 50 |
| Installed cost range | $3,056–$4,129 | not published |
| ENERGY STAR certified | yes | not matched |
| Sound level (dB) | 54 | not filed |
| Refrigerant | R-134a, GWP 1430 | not filed |
| On the market since | 2024-07-01 | not filed |
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 Noritz ME50HPT if running cost matters most: it uses 2,631 kWh less a year on the same test.
- Pick the Ruud MR50245 C if it is the one you can get installed sooner or for less — on the filed figures it has no advantage over the Noritz ME50HPT.
- Neither if your household's busiest hour needs more than 58 gallons of hot water — neither lists more. Check whether a 50-gallon heater is enough.
Each model on its own
-
Noritz ME50HPT
Its filed figures, class position and running cost on your ZIP.
-
Ruud MR50245 C
Its filed figures, class position and running cost on your ZIP.