Rinnai CXP160I REU-NBP2530FFC-US
Rinnai CXP160I REU-NBP2530FFC-US is a gas tankless water heater from Rinnai rated 4.6 GPM at a 0.97 UEF.
| Uniform Energy Factor (UEF) | 0.97 |
|---|---|
| Annual gas use (natural gas) | 175 therms/yr |
| Recovery efficiency | 98 % |
| Annual propane use | 191.25 gal/yr |
| Fuel | Natural Gas, Propane |
|---|
| Max flow rate | 4.6 GPM |
|---|---|
| Draw pattern | High |
| Minimum activation flow | 0.1 GPM |
| Gas input rate | 160 kBTU/h |
|---|
| Max current draw | 4 A |
|---|---|
| Vent type | Power Direct Vent |
| Vent size | 2 |
| Smart / connected capable | No |
|---|
| Height | 25.8 in |
|---|---|
| Diameter | 11.4 in |
| Width | 18.5 in |
| Depth | 11.4 in |
| ENERGY STAR certified | Yes |
|---|
Real flow rate by climate
A tankless heater's usable flow depends on how far it must raise incoming water temperature. Sustained hot-water flow of the Rinnai CXP160I REU-NBP2530FFC-US at common temperature rises (a typical shower uses about 2 GPM of mixed water):
| Temperature rise | Climate | Sustained flow | Simultaneous showers |
|---|---|---|---|
| 45 °F | Warm climate (~75 °F groundwater) | 4.6 GPM | 2 |
| 55 °F | Mild climate (~65 °F groundwater) | 4.6 GPM | 2 |
| 70 °F | Cold climate (~50 °F groundwater) | 4.4 GPM | 2 |
| 77 °F | DOE test condition | 4 GPM | 2 |
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- Bradford White RTG-K-160N2 (UEF 0.95)
- Bradford White RTG-K-160N2 (RTG-K-160N1) (UEF 0.95)
- Friedrich FDTGH-S84I (UEF 0.96)
Frequently asked questions
Is the Rinnai CXP160I REU-NBP2530FFC-US ENERGY STAR certified?
Yes, the Rinnai CXP160I REU-NBP2530FFC-US holds a current ENERGY STAR certification for water heating efficiency (UEF 0.97).
How much does the Rinnai CXP160I REU-NBP2530FFC-US cost to run per year?
About $254 per year at national average energy rates, based on its certified annual energy use under the DOE test draw pattern. Your rate and usage change this figure.
What venting does the Rinnai CXP160I REU-NBP2530FFC-US use?
The Rinnai CXP160I REU-NBP2530FFC-US uses Power Direct Vent venting with 2 in vent connections. Matching the existing vent type is usually the cheapest replacement path.
Is the Rinnai CXP160I REU-NBP2530FFC-US a smart water heater?
No, the Rinnai CXP160I REU-NBP2530FFC-US is not connected-capable — it has no app connectivity or demand-response support.
Sources
- data.energystar.gov (retrieved 2026-07-17)