What it delivers
The Rinnai RXP160iN Condensing Tankless Water Heater is a condensing gas tankless with a 160,000 BTU/h burner and a stated maximum flow of 9.0 GPM.
Worked out from its input, it delivers roughly 6.8 GPM when the water only has to rise 45°F, and 4.3 GPM at a 70°F winter rise: 3 showers at 2 GPM in summer, 2 showers at 2 GPM in winter. Check it against your own fixtures.
Gas load at full fire: about 1.7 gallons of propane an hour. An older half-inch line that already feeds a furnace often can't spare that, so have a gas fitter check the pipe size and run.
Condensing means cooler exhaust in plastic vent pipe and a condensate line to a drain; most installs add a neutralizer cartridge on that line.
Other listed details: connectivity: WiFi; material: Stainless Steel; model: RXP160iN; warranty: 5 Year Labor, 5 Year Parts.
The listing gives dimensions of 19 in (W) x 31 in (H), a weight of 57 lb and mount in the box.
Warranty, per the listing: 5 Year Labor, 5 Year Parts.
Right unit for this house?
Install it when
- Houses running 2 showers at once in winter
- Propane homes
- Replacing a gas tank heater
Look at another unit when
- More than 2 winter showers at once
- Homes without a gas line
Strengths and trade-offs
Strengths
- 160,000 BTU/h input
- Up to 9.0 GPM
- Condensing efficiency
Trade-offs
- Gas line may need upsizing
- Needs a condensate drain
- Annual flushing on hard water
Install limits
- Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.
Rated performance
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | RXP160iN | Retailer |
|---|---|---|
| Dimensions (seller) | 19"W x 31"H | Retailer |
| Voltage | 120 V | Retailer |
| Max flow (maker) | 9 GPM | Retailer |
| Input (maker) | 160,000 BTU/h | Retailer |
| Product weight | 57 lb | Retailer |
| Material | Stainless Steel | Retailer |
| Warranty | 5 Year Labor, 5 Year Parts | Retailer |
| Fuel | propane | Retailer |
| Condensing | condensing | Retailer |
| Connectivity | WiFi | Retailer |
Rival units at this flow
More gas tankless water heaters rated for similar demand
- Rinnai RE140eN Natural Gas Tankless Water Heater
- Rinnai RE140iN Natural Gas Tankless Water Heater
- Rinnai RE180eN Natural Gas Tankless Water Heater
- Rinnai RE180iN Natural Gas Tankless Water Heater
Full gas tankless water heaters spec grid · Every Rinnai unit in the catalog
Final verdict
A sensible condensing gas tankless for houses running 2 showers at once in winter.
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