Custom Comfort CCOHPWH50A vs RINNAI REHP50W: which uses less energy?
At the medium draw pattern the Custom Comfort CCOHPWH50A and the RINNAI REHP50W use the same energy, 866 kWh a year each, on the same federal test. Both are filed as an electric tank, so the comparison holds; what separates them is below. Enter your ZIP to price either one on your own rate.
Side by side
Compared within one class only: models filed as an electric tank at the medium draw pattern.
| Figure | Custom Comfort CCOHPWH50A | RINNAI REHP50W |
|---|---|---|
| UEF (Uniform Energy Factor) | 3.75 | 3.75 |
| Energy use per year (kWh) | 866 | 866 |
| First hour rating (gal) | 69 | 71 |
| Rated storage volume (gal) | 47 | 46 |
| Installed cost range | $3,089–$4,419 | $3,057–$4,409 |
| ENERGY STAR certified | yes | yes |
| Sound level (dB) | 49 | 49 |
| Refrigerant | R-134a, GWP 1430 | R-134a, GWP 1430 |
| On the market since | 2025-01-01 | 2026-05-30 |
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 Custom Comfort CCOHPWH50A since 2025-01-01, the RINNAI REHP50W since 2026-05-30. A sale date, not a lifespan.
Which should you pick?
- Pick the Custom Comfort CCOHPWH50A if its price or availability suits you — on energy the two are level.
- Pick the RINNAI REHP50W if you need more hot water in your busiest hour: it lists a first hour rating of 71 gallons against 69.
- Neither if your household's busiest hour needs more than 71 gallons of hot water — neither lists more. Check whether a 50-gallon heater is enough.
Each model on its own
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Custom Comfort CCOHPWH50A
Its filed figures, class position and running cost on your ZIP.
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RINNAI REHP50W
Its filed figures, class position and running cost on your ZIP.