KENDRAJA KEN-BC2332 vs RINNAI (RX130I) REU-NB2024FF-US: which uses less energy?
At the medium draw pattern the RINNAI (RX130I) REU-NB2024FF-US uses 114 therms a year and the KENDRAJA KEN-BC2332 120 — 6 therms (5%) less, about 62 therms over ten years. Both are filed as a gas tankless unit, so the comparison holds. Enter your ZIP below to price the difference.
Side by side
Compared within one class only: models filed as a gas tankless unit at the medium draw pattern.
| Figure | KENDRAJA KEN-BC2332 | RINNAI (RX130I) REU-NB2024FF-US |
|---|---|---|
| UEF (Uniform Energy Factor) | 0.92 | 0.97 (better) |
| Energy use per year (therms) | 120 | 114 (better) |
| Max flow (GPM) | 4.1 | 3.8 |
| Installed cost range | $2,216–$3,239 | $2,452–$3,515 |
| ENERGY STAR certified | not matched | yes |
| On the market since | not filed | 2024-03-01 |
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 RINNAI (RX130I) REU-NB2024FF-US if running cost matters most: it uses 6 therms less a year on the same test.
- Pick the KENDRAJA KEN-BC2332 if you run more fixtures at once: it lists 4.1 GPM against 3.8.
- Neither if you need more than 4.1 GPM at the same time — neither unit lists more. Check how to size a tankless unit by GPM.
Each model on its own
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KENDRAJA KEN-BC2332
Its filed figures, class position and running cost on your ZIP.
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RINNAI (RX130I) REU-NB2024FF-US
Its filed figures, class position and running cost on your ZIP.