Search  for anything...

Rinnai RU160iN Condensing Tankless Hot Water Heater, 9 GPM, Natural Gas, Indoor Installation

  • Based on 118 reviews
Condition: New
Checking for product changes
$1,172.43 Why this price?
Save $130.27 was $1,302.70

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term with PayTomorrow
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, May 7
Order within 13 hours and 40 seconds
Available payment plans shown during checkout

Style: Natural Gas, Indoor Installation


Size: 9 GPM


Features

  • Endless Hot Water: Our tankless hot water heaters offer unlimited whole-home hot water flow and come equipped with Circ-Logic for pairing with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation
  • Energy and Space Efficient: The tankless design of this small hot water heater saves on space and conserves energy as it heats only when necessary
  • Optimal Water Pressure: With a hot water flow rate of up to 9 GPM, this tankless water heater provides a powerful, constant stream that can accommodate up to 6 appliances at once
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your water heater; We do not recommend installing a water heater without a technician
  • Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively; Wifi monitoring available with Controlr module (not included)
  • ENERGY STAR qualified with Uniform Energy Factor of 0.97

Description

The Rinnai Super High-Efficiency Plus Tankless Water Heater is the ultimate solution for energy-conscious homeowners seeking a smart, compact, and efficient water heating system. This tankless hot water heater offers advanced features and a durable design that provides an endless supply of hot water, making it perfect for households of all sizes. Enjoy unlimited hot water flow throughout your home, as well as a compact and space-saving design that conserves energy by heating water only when necessary, providing optimal energy efficiency. With a high-performance 9 GPM hot water flow rate, this tankless gas water heater delivers powerful and constant water pressure for a satisfying and uninterrupted stream. Say goodbye to low water pressure and enjoy a powerful hot water experience. Equipped with Circ-Logic technology, this on demand water heater enables recirculation patterns that coincide with your typical habits. Pair it with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation. Rest assured with our Super High-Efficiency Plus Tankless Water Heater, backed by a guaranteed warranty. Enjoy a 15-year residential warranty for the heat exchanger, 5-year warranty for labor, and 1-year warranty for parts. For added convenience, Wi-Fi monitoring is available with the Controlr module (not included), allowing you to monitor and control your water heater from anywhere. Rinnai's super high- efficiency plus condensing tankless water heater models, featuring SENSEI technology, offer the most advanced technology in water heating. Unlike traditional tank heaters that accumulate rusty sediments, our compact water heater elements have a longer lifespan as water runs continuously through the pipes.

Brand: Rinnai


Product Dimensions: 22.05"W x 33.86"H


Color: Silver


Voltage: 120 Volts


Brand: ‎Rinnai


Product Dimensions: ‎22.05"W x 33.86"H


Color: ‎Silver


Voltage: ‎120 Volts


Manufacturer: ‎Rinnai


Part Number: ‎RU160iN


Item Weight: ‎72.5 pounds


Country of Origin: ‎China


Item model number: ‎RU160in


Is Discontinued By Manufacturer: ‎No


Size: ‎9 GPM


Pattern: ‎Water Heater


Installation Method: ‎Wall Mounted


Item Package Quantity: ‎1


Certification: ‎Energy Star


Included Components: ‎Water Heater


Batteries Included?: ‎No


Batteries Required?: ‎No


Warranty Description: ‎See Manufacturer


Date First Available: May 4, 2018


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Klarna Pay in 4
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Ground Control, we have hot water!
Color: Silver
Read tons of online reviews comparing various brands before pulling the trigger for this purchase. Rinnai is a Japanese company with rave reviews across the web. Fairly easy for the plumber to install as a replacement to the previous old tankless water heater. Back to having plenty of hot water on demand. I read comments about noise level: it doesn't make any more noise than the previous heater. Ours is located in the garage, not inside, so can appreciate the difference. it's not loud but would be noticeable when running indoors. ... show more
Reviewed in the United States on February 7, 2024 by D Ritchie

  • Love this thing
Color: Silver
This was an item I handpicked due to size and many hours of research. There are other good products out there that is comparable, but this one is exactly what I was looking for and it's not disappointing. My installers were able to get it mounted in the same spot the previous tankless was in, with little alterations to the existing structure. Quite honestly, if someone was good with plumbing and felt comfortable dealing with Gas lines, this could easily be a DIY install for someone with an advanced skill do-it-yourself skillset. The instructions were very clear, the customer support guy was extremely helpful. He helped me order all of the necessary parts and even pointed me in the direction of where to get them from. The unit has multiple options for venting and intake which is clutch for those who may need to pivot due whatever circumstances. I originally wanted to go Concentric 5in and ended up settling for 2in twin pipe and couldn't be happier. My furthest bathroom is on the opposite side of the house and a floor up, and it took about 30 secs to get the hot water up there. Big improvement from the previous tankless. ... show more
Reviewed in the United States on December 12, 2023 by Illy-Den

  • Great water heater so far.
Color: Silver
The media could not be loaded. We switched from a 40 gal tank heater to this rinnai and we are so far happy with it. I’m relatively handy and I did the install myself. The connecting and mounting of the heater wasn’t too bad, what took the longest was to re pipe the whole system since water connections were on top and the rinnai requires them on the bottom. It is pretty quiet. Not as quiet as the old one, but definitely very quiet. You can hear it in the video. When the family kicks in it gets slightly louder. We are in 1100 sq ft house and the heater is in the garage the heater shares a wall with the living room and you can barely hear when fully operational. Right the exterior temperature is about 45 degrees, the water is taking 90 seconds to go from cold to about 110 degrees to the shower, which is the furthest fixture in the house. About 25-30 ft of pipe in the crawl space. That’s about half the time the old one use to take. Easy to regulate temperature. Will update the review in a couple of months! ... show more
Reviewed in the United States on November 29, 2023 by Amazon Customer Amazon Customer

  • Great unit for pur homes
Color: Silver
Delayed delivery due to it going to a house under construction, but the unit has had no issues once we got it and installed it. Exactly what the house needed. We are using this ( or a similar model depending on need) in all our new home builds and all our clients love them.
Reviewed in the United States on January 19, 2024 by Michael S.

  • Unlimited showers!
Color: Silver
Everything it said it was Fired up right away and started giving hot water in seconds High pressure, long and hot showers Even two at a time!
Reviewed in the United States on January 27, 2024 by Guitartist

  • Very noisey and loud!
Color: Silver
It takes some plumbing adjustments and re-routs if your are replacing a gas tank water heater, and you have to provide an electric circuit and condensate drain, too. I am surprised at how much noise this water heater makes! When the water is "on", it makes no noise, but when it is "off," there is a fan motor that comes on randomly throughout the day that hums and changes pitch. Maybe it has something to do with the "condensing" feature of this machine, but I really never expected it to be so annoyingly noisey! There is also quite a pressure drop through this machine. My shower no longer sprays like it used to, and the kitchen sink faucet runs pretty slow now too. It's installed, so I guess I'll have to live with it. ... show more
Reviewed in the United States on September 15, 2022 by Pam

  • No fear from not having hot water
Color: Silver
My first tankless water heater and the directions was great. Still tweaking things added a recirculating pump. This model ru160in was not equipped with one. But for my home size this works just fine. Love the warranty it has
Reviewed in the United States on September 29, 2023 by Pat C.

  • Great water heater
Color: Silver
This is such a room saving excellent product. Hot water fast!
Reviewed in the United States on December 16, 2023 by Amazon Customer

Can't find a product?

Find it on Amazon first, then paste the link below.