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Rinnai

NEW Rinnai RX180iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 10 GPM, 180,000 BTU

  • Based on 239 reviews
Condition: New
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Availability: Only 8 left in stock, order soon!
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Arrives Friday, Sep 19
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Style: RX180iN


Size: 10 GPM


Features

  • One Model, Anywhere: This Rinnai tankless water heater is installable indoors or outdoors thanks to our new Versa Vent and powered by either propane or natural gas thanks to a Smart Sense gas control system; RX-OVC vent cap required for outdoor install
  • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: This condensing propane and natural gas tankless water heater from Rinnai is only the size of a small suitcase, but provides up to 10 GPM (6 fixtures at once)
  • Smart, Efficient Design: This water heater's modern design includes an easy-to-use interface, Quick Flush feature for simplified flushing, as well as a super-high energy efficiency factor of UEF .98; See Controlr module for WiFi control (not included)
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to find a qualified technician to install your tankless water heater, and use the Rinnai Central App for help with setup, service & troubleshooting; We do not recommend installing a water heater without a technician
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater size for your home; Check our Ground Water Temperature Map to see if this heater is optimal for your region

Description

Rinnai's super-high efficiency plus (UEF .98) condensing indoor/outdoor tankless water heater models offer advanced technology that adapts to suit the needs of any household. Our convertible on-demand water heaters are able to operate using either propane or natural gas thanks to a Smart Sense gas control system and can be installed indoors or outdoors with one simple adaptation thanks to the new Versa Vent. Additional features on this natural gas and propane water heater include an easy-to-use interface and Quick Flush function for simplified flushing. Unlike tank heaters which accumulate rusty sediments, this tankless water heater has a longer lifespan. Designed to be extremely compact, this small water heater only takes up the space of a small suitcase, letting you reclaim some of your home's most valuable real estate. This Energy Star qualified small hot water heater can be made even smarter with Wi-Fi connectivity through the Control-R module (sold separately).

Brand: Rinnai


Product Dimensions: 19"W x 31"H


Color: Silver


Wattage: 76 watts


Voltage: 120 Volts


Brand: ‎Rinnai


Product Dimensions: ‎19"W x 31"H


Color: ‎Silver


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


Maximum Pressure: ‎1.5E+2 Pound per Square Inch


Mounting Type: ‎Wall


Is Electric: ‎No


Manufacturer: ‎Rinnai America Corporation


UPC: ‎766156017353


Manufacture Year: ‎2021


Part Number: ‎RX180iN


Item Weight: ‎54 pounds


Item model number: ‎RX180iN


Size: ‎10 GPM


Item Package Quantity: ‎1


Included Components: ‎mount


Batteries Required?: ‎No


Date First Available: November 20, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Sep 19

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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Top Amazon Reviews

    • Fantastic Water Heater
Style: RXP160iN Size: 9 GPM
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High quality build and tech design. Installation is straight forward thanks to the excellent, detailed instruction manual*. Nonetheless, pre-planning mounting location, materials, electrical service outlet if not already available, is strongly advised. To really maximize energy efficiency, the On Demand BLE Bluetooth button accessory is recommended vs the auto cycle which I found to be cycling every 10mins vs. 28mins as defined by the temperature setting. It was to the point that even the cold water taps were warm, so a lot of wasted energy. Instead, we bought the BLE button accessory ($32) to activate the water recirculation 5 min cycle while getting ready to shower; we turn on shower and with 15 seconds, hot water is flowing saving lots of water and energy!! We are thrilled by knowing we will be saving tons of water and energy year over year. * My only critique is the installation manual is limited in explaining some of the non-critical setup parameter features when configuring the unit for initial operation and does not make clear what you need to set up the Bluetooth on demand operation. I had to call their tech support to figure out the cost effective BLE button option ($32) for on demand set up. Also the app is very limited for the customer personal use features unless you buy a wifi module accessory to allow some remote features set up (more complex installation, $200+). Overall minor quips. The unit is of high build quality and sophisticated technology design that provides hot water efficiently and saves water due to the On Demand recirc feature!! Love it! ... show more
Reviewed in the United States on June 23, 2024 by Carlos Parra Carlos Parra
    • A great Tank less replacement
Style: RX130iN Size: 7.1 GPM
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I bought this a number of months ago to replace an ailing Bosch FX240 that's about 20 years old. I finally got to a point of replacing the old one. I did have to run a 2 inch PVC to the side of the house for the exhaust and transitioned one of my old stacks into an fresh air intake. This Heater just works so much better and seems like I have more control over the water temperature now at the faucet. I'm very pleased with this unit. ... show more
Reviewed in the United States on August 5, 2025 by Radio_Tech Radio_Tech
    • Good product here
Style: RX160iN Size: 9 GPM
Excellent purchase. Very happy with install and operation. Rinnai is definitely may go to.
Reviewed in the United States on August 3, 2025 by Don Howell
    • Why did I wait so long?
Style: RXP199iN Size: 11.1 GPM
Review Image by McNally Family McNally Family
Love this tankless hot water heater! We never run out of hot water and with the remote Bluetooth Re-circulation Push Button (RPB200, you can have up to 5), we activate the demand for hot water only when we need it. While you can still wait momentarily for the hot water, the difference is your not running water while you wait! When we anticipate demand for hot water, we simply push the button (located near kitchen and bathroom sinks), and after a moment or two, turn on the water and it's hot! No more paying for water and sewage fee's just waiting for hot water. You can thank the "Thermal Bypass Valve", included with the RXP model, that is installed at the furthest point away from the water heater (unless you have a dedicated re-circulation return line, which we didn't). One consideration many people overlook, is what happens during a power outage. The answer is "nothing", literally! The unit requires electricity to ignite the gas burners. For this reason, the need to include a backup power source for emergency's is crucial. We included a battery backup unit from Safeguard Power Solutions called "Hugo", which transfers power to the tankless unit immediately upon detecting a power failure, and maintains that power until either the grid power is restored, or the battery is depleted. In an attempt to extend the potential life of the battery, we also purchased the "Flow-Sensor" option with our Hugo purchase. This limits the demand for power to only when water flow is detected (when someone turns on the hot water), rather than draining the battery constantly. While an added cost to the project, life with a tankless unit is different from life with a tank style hot water heater (that 50 gallon reserve of hot water is gone). The initial installation costs will be higher, primarily because a tank style water heater is generally plumbed from above, while a tankless unit plumbs from the bottom, requiring more extensive modification. Having said that, in the future, replacement units should be simple, as is replacing a tank style with a new tank style unit would be today. Finally, I would be remiss not to mention the $600.00 tax credit (30% of purchase/installation cost, up to $600.00 max), we received when filing our tax's this year (2024). The tax credit is limited to only the most efficient models, so do your homework before making a purchase decision. **Water Heaters (Natural Gas) Tax Credit: https://www.energystar.gov/about/federal-tax-credits/water-heaters-natural-gas-oil-propane-tax-credit This tax credit is effective for products purchased and installed between January 1, 2023, and December 31, 2032. ... show more
Reviewed in the United States on February 18, 2025 by McNally Family McNally Family
    • Works but room for improvement.
Style: RXP199iN Size: 11.1 GPM
Works well overall but pump is louder than expected. Can't adjust the pump frequency much, only economy or comfort settings. I have it set to economy but it still runs the recirculation pump more often than I like.
Reviewed in the United States on June 11, 2025 by Tron Hardy
    • Outstanding Tankless, Gas Water Heater
Style: RXP199iN Size: 11.1 GPM
This is an outstanding gas, tankless water heater! I no longer run out of hot water like I did with my previous electric water heater. It was easy to install.
Reviewed in the United States on July 30, 2025 by Jeffrey C Chapman
    • Great product!
Style: RX199iN Size: 11.1 GPM
This instant hot water heater has done very well for us. Installation was relatively straightforward and it's been operating great for the last 6 months
Reviewed in the United States on August 4, 2025 by Jeannie
    • Good value water heater
Style: RXP199iN Size: 11.1 GPM
Nice tankless water heater. Warms water fast. Has option of recirculation. Downside is you have only option to connect to bluetooth when you power it first time. You can technically do it later but you have to open the heater, and reset on motherboard to work. There has to be an easier way.
Reviewed in the United States on July 22, 2025 by Bhupendra M Rajpura

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