Rinnai RX180iN Condensing Smart Sense Tankless Water Heater: Indoor or outdoor installation
Meet the Rinnai RX180iN—a tankless water heater that's as flexible as it is efficient, perfect for squeezing into tight spots indoors or braving the elements outside. Thanks to its Smart Sense gas control system, this little powerhouse doesn't care if you're team propane or natural gas; it's ready to roll with whatever you've got. And with a compact design that belies its strength, it pumps out up to 10 gallons per minute of hot water. That's enough to keep your shower steamy while someone else is doing dishes—no more cold-water surprises.
Here's the lowdown on what makes it shine:
- First up, Versa Vent makes installation a breeze (because who has time for complicated setups?).
- Then there's the Quick Flush function, because maintenance should be easy, not a chore.
- It's Energy Star qualified with a UEF of 0.98—pretty much the gold standard for efficiency.
- And for those who love tech, there's optional Wi-Fi connectivity with the Control-R module. Yes, you can control your water heater from your phone. Welcome to the future.
Just a heads-up: to keep this bad boy running smoothly for years, you'll want to get it professionally installed. Trust us, it's worth it.
Features
- Propane or natural gas operation
- Up to 10 GPM flow rate
- 180,000 BTU heat output
- High efficiency (0.98 UEF)
- Indoor or outdoor installation
General specs
- Brand: Rinnai
- Model: RX180iN
- Seller: Amazon
- ID: B0CNQF7G68
- Product Dimensions: 19"W x 31"H
- Wattage: 76 watts
- Voltage: 120 Volts
- Maximum Flow Rate: 10 Gallons Per Minute
- Maximum Temperature: 140 Degrees Fahrenheit
- Heat Output: 180000 British Thermal Units
- efficiency: High (0.98 UEF)
- Maximum Operating Pressure: 150 Pound per Square Inch
- Mounting Type: Wall
- Is Electric: No
- Item Weight: 54 pounds
- Country of Origin: Japan
- Size: 10 GPM
- Included Components: mount
- Batteries Required: No
- First listed by seller: 6/5/25
If you are interested in more details, you can find full information on the seller's page.
Buy on Amazon
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Price History for seller Amazon
Shipping options
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| Brand | Rinnai | Rinnai | Rheem | Rheem | Rheem | Rinnai |
| Model | RX180iN | RX199iN | RTG-95DVLN-3 | RTEX-24 | RTEX-18 | V53DeP |
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| Rating |
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| Price | $1,409.94 | $1,532.79 | $1,259.05 | $464.99 | $415.00 | $741.65 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | Dec 6, 2025 | Dec 6, 2025 | Dec 6, 2025 | Dec 6, 2025 | Dec 6, 2025 | Dec 6, 2025 |
| Product Dimensions | 19"W x 31"H | 18.5"W x 30.11"H | 13.5"W x 24.2"H | 17.63"W x 18.25"H | 13"W x 30"H | |
| Wattage | 76 watts | 98 watts | 24 KW | 18000 watts | ||
| Voltage | 120 Volts | 120 Volts | 240 Volts | 240 Volts | ||
| Maximum Flow Rate | 10 Gallons Per Minute | 11 Gallons Per Minute | 9.5 Gallons Per Minute | 5.9 Gallons Per Minute | 4.4 Gallons Per Minute | 5.3 Gallons Per Minute |
| Maximum Temperature | 140 Degrees Fahrenheit | 140 Degrees Fahrenheit | 140 Degrees Fahrenheit | 140 Degrees Fahrenheit | ||
| Heat Output | 180000 British Thermal Units | 199000 British Thermal Units | 24 Kilowatts | 18 Kilowatts | 81 Kilowatts | |
| efficiency | High (0.98 UEF) | High (UEF .98) | 0.82 | 99.8% Energy efficient | 99.8% | High |
| Maximum Operating Pressure | 150 Pound per Square Inch | 150 Pound per Square Inch | 150 | |||
| Mounting Type | Wall | Wall | Wall | Wall | Wall | Wall |
| Is Electric | No | No | No | Yes | No | |
| Item Weight | 54 pounds | 55 pounds | 46.5 pounds | 17.8 pounds | 14.78 pounds | 33 pounds |
| Country of Origin | Japan | Japan | Japan | |||
| Size | 10 GPM | 11.1 GPM | 9.5 GPM | 5.3 GPM | ||
| Included Components | mount | Display | Fittings, Aerators | Water Heater | ||
| Batteries Required | No | No | No | No | ||
| Item Depth | 11.4 | 10.27 inches | 3.5 inches | 7.9 in / (202 mm) | ||
