---
product_id: 73516429
title: "Rinnai RU160iN Condensing Tankless Hot Water Heater, 9 GPM, Natural Gas, Indoor Installation"
brand: "rinnai"
price: "€ 2081.49"
currency: EUR
in_stock: true
reviews_count: 8
category: "Rinnai"
url: https://www.desertcart.ie/products/73516429-rinnai-ru160in-condensing-tankless-hot-water-heater-9-gpm-natural
store_origin: IE
region: Ireland
---

# 0.97 UEF energy efficiency 9 GPM max flow 15-year heat exchanger warranty Rinnai RU160iN Condensing Tankless Hot Water Heater, 9 GPM, Natural Gas, Indoor Installation

**Brand:** rinnai
**Price:** € 2081.49
**Availability:** ✅ In Stock

## Summary

> 🔥 Power your home with endless hot water and next-level efficiency!

## Quick Answers

- **What is this?** Rinnai RU160iN Condensing Tankless Hot Water Heater, 9 GPM, Natural Gas, Indoor Installation by rinnai
- **How much does it cost?** € 2081.49 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/73516429-rinnai-ru160in-condensing-tankless-hot-water-heater-9-gpm-natural)

## Best For

- rinnai enthusiasts

## Why This Product

- Trusted rinnai brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Endless Hot Water Flow:** Enjoy uninterrupted hot water for up to 6 appliances simultaneously—perfect for busy households.
- • **Space-Saving & Energy Smart:** Compact tankless design heats water only when needed, slashing energy bills and freeing up valuable space.
- • **Wi-Fi Monitoring Compatible:** Stay connected and in control remotely with optional Controlr module—smart home integration made easy.
- • **Robust Warranty & Durability:** Backed by a 15-year heat exchanger warranty and ENERGY STAR certification for peace of mind and eco-conscious living.
- • **Circ-Logic Recirculation Ready:** Pair with an external pump to cut wait times and get hot water on demand—because every second counts.

## Overview

The Rinnai RU160iN is a high-efficiency, natural gas tankless water heater delivering up to 9 gallons per minute of continuous hot water. Designed for indoor wall-mount installation, it features Circ-Logic technology for reduced wait times, a compact footprint that saves space, and an impressive 0.97 Uniform Energy Factor rating. With a 15-year heat exchanger warranty and ENERGY STAR certification, it’s engineered for durability and energy savings, making it an ideal upgrade for modern, eco-conscious homes.

## 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.

Review: High-Performance & Hassle-free - Rinnai RU199iN Delivers! - October 2023 - The takeaway is that anyone who complains about these not working well did not install it correctly (and won't admit it). I am shocked at how well this thing works. I am still amazed how quiet it is. No further occurrences of errors. Works fine with furnace running even supplied through a 1/2in tee from a 1 in main supply to the basement. Sep 2023 Brief update: I had one occurrence of error 12 - flame out. But it hasn't happened again. I hope it was a fluke caused by our gas supply and nothing else. If not, I'll investigate and update my review afterward. Original review Aug 2023: My recent experience with the Rinnai RU199iN tankless hot water heater has, in a single word, been excellent! It's like the ninja of water heaters - quiet and incredibly efficient in performance. Getting it up and running was straightforward, similar to the typical expectations of setting up the necessary plumbing, gas, venting, and electrical work. However, it's important to note that this isn't like replacing a conventional tank where everything falls into place easily. Rather, it is like a fitting jigsaw puzzle into place, not easy per se, but not too daunting either. The most fun was renting a rotary hammer from Home Depot to bore the vent holes though brick. For anyone worried about gas lines like me, you may appreciate this little surprise. The unit appears to have an internal gas booster pump. Ingenious, right? I chose to run it off of an existing gas line which was originally fed from a 1-inch line from the meter, with a brief downgrade to a 1/2 inch, before returning to a 3/4 inch. Despite my initial concern, it seems to function flawlessly under these conditions. But I am not complacent, and plan to eventually test all my gas appliances together in full throttle, just to be certain that the supply line capacity holds up. One of the most commendable features of the Rinnai RU199iN? Stable hot water output. Not once did I experience any hot water fluctuations during use. An absolute win! However, I did notice a slightly longer delay to get hot water on a cold startup, taking approximately 10 to 15 seconds longer compared to traditional heaters. But once it gets going, it provides steady, continuous hot water supply. Oh, and I must add - I did the installation myself. So, for all the DIY enthusiasts out there, this little project is quite manageable and rewarding. In conclusion, the Rinnai RU199iN tankless hot water heater has proven to be a stellar addition to my home. It delivers consistent performance, minimal noise, and solid dependability. If what you're after is a top-notch appliance that couples functionality with ease of use, then the Rinnai RU199iN certainly fits the bill. Five stars for this one, without a second thought!
Review: EXCELLENT PERFORMANCE IN ALPINE CLIMATE - This unit outperformed my expectations in a big way. I live in the mountains at 8,000 feet and my cold water comes from a well. In the wintertime, the water is MAYBE 40 degrees when it comes out of the tap. I figured with a 7 gallon/min rating and the incredibly cold ground water, I would be lucky to get 3 or so gallons/min, which would be enough for a single hot shower. Nope! I've had no problem running two simultaneous showers along with the dishwasher in the wintertime. How this thing manages to heat the water by 70 degrees instantly is beyond me but it sure does! I had very minimal plumbing experience but I had no problem installing the unit after doing 10 minutes of YouTube research. I love the fact that the exhaust vent just uses standard Schedule 40 PVC, which is super cheap and easy to work with. As you can see in the pictures, I added a pre-filter to reduce mineral scale buildup as my ground water is very hard. I just swap out the cartridge every 6 months, just like the cartridge in the fridge. After 9 months of use, the unit hasn't yet told me it needs any descaling, but I expect that will come up by the end of the year. The procedure there is very simple. Otherwise, this is a very compact, very attractive unit. Zero issues after 9 months of continuous use.

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07CVLCMK7 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #425,525 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #549 in Water Heaters |
| Brand | Rinnai |
| Certification | Energy Star |
| Color | Silver |
| Customer Reviews | 4.5 4.5 out of 5 stars (922) |
| Date First Available | May 4, 2018 |
| Efficiency | High |
| Global Trade Identification Number | 00766156009617 |
| Included Components | Water Heater |
| Installation Method | Wall Mounted |
| Is Discontinued By Manufacturer | No |
| Is Electric | No |
| Item Depth | 22.05 inches |
| Item Package Quantity | 1 |
| Item Weight | 72.5 pounds |
| Item model number | RU160in |
| Manufacturer | Rinnai America Corporation |
| Maximum Flow Rate | 9 Gallons Per Minute |
| Maximum Temperature | 140 Degrees Fahrenheit |
| Mounting Type | Wall |
| Part Number | RU160iN |
| Pattern | Water Heater |
| Product Dimensions | 22.05"W x 33.86"H |
| Size | 9 GPM |
| Style | Natural Gas, Indoor Installation |
| UPC | 766156009617 |
| Voltage | 120 Volts |
| Warranty Description | Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts) |
| Wattage | 46891.36 watts |

## Product Details

- **Brand:** Rinnai
- **Capacity:** 9 Gallons
- **Color:** Silver
- **Power Source:** Gas Powered
- **Product Dimensions:** 22.05"W x 33.86"H

## Images

![Rinnai RU160iN Condensing Tankless Hot Water Heater, 9 GPM, Natural Gas, Indoor Installation - Image 1](https://m.media-amazon.com/images/I/61uJabmAAUL.jpg)
![Rinnai RU160iN Condensing Tankless Hot Water Heater, 9 GPM, Natural Gas, Indoor Installation - Image 2](https://m.media-amazon.com/images/I/6196OcT+ZuL.jpg)
![Rinnai RU160iN Condensing Tankless Hot Water Heater, 9 GPM, Natural Gas, Indoor Installation - Image 3](https://m.media-amazon.com/images/I/712bkI7cvxL.jpg)
![Rinnai RU160iN Condensing Tankless Hot Water Heater, 9 GPM, Natural Gas, Indoor Installation - Image 4](https://m.media-amazon.com/images/I/71GhP2mLeSL.jpg)
![Rinnai RU160iN Condensing Tankless Hot Water Heater, 9 GPM, Natural Gas, Indoor Installation - Image 5](https://m.media-amazon.com/images/I/71CAxX5hhTL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Is this unit supposed to have a tiny drip? We have this installed in our garage and there is a small nozzle that drips when the unit is being used.**
A: Yes, this unit is a condensing water heater and the drip is called condensate and should be safely disposed of. It was explained to me like this- the chemical reactions in burning natural gas produce some harmful chemical byproducts and water. In less efficient devices, the hot exhaust boils the water into vapor and the byproducts and water vapor blow out the exhaust to the outside. However, this product is very efficient and extracts so much heat from the burning that the exhaust isn't hot enough to fully vaporize the water which condenses in the device (along with some of the chemical byproducts) and drips from the device's condensate drain. This condensate (containing some of the chemical byproducts) is mildly acidic and should be disposed of safely as it can slowly eat away at concrete and other things over long periods.

**Q: Can you use a fresh air intake or is it only indoor air intake?**
A: You can use both, the units come with a vent plastic grate for indoor air venting, however, outdoor fresh air intake is recommended when possible.

**Q: which brand is the most quiet?**
A: The RU199in, from my experience, has been the quietest 199,000 BTU tankless heater I have heard, but I certainly have not heard all of them. 

Most review sites do cite how quiet the unit is. You can probably YouTube this question and hear it running in some reviews.

**Q: What recirculation pump will work with this heater?**
A: rinnai recommends the GTK03 Grundfos kit for this unit

## Customer Reviews

### ⭐⭐⭐⭐⭐ High-Performance & Hassle-free - Rinnai RU199iN Delivers!
*by R***R on August 2, 2023*

October 2023 - The takeaway is that anyone who complains about these not working well did not install it correctly (and won't admit it). I am shocked at how well this thing works. I am still amazed how quiet it is. No further occurrences of errors. Works fine with furnace running even supplied through a 1/2in tee from a 1 in main supply to the basement. Sep 2023 Brief update: I had one occurrence of error 12 - flame out. But it hasn't happened again. I hope it was a fluke caused by our gas supply and nothing else. If not, I'll investigate and update my review afterward. Original review Aug 2023: My recent experience with the Rinnai RU199iN tankless hot water heater has, in a single word, been excellent! It's like the ninja of water heaters - quiet and incredibly efficient in performance. Getting it up and running was straightforward, similar to the typical expectations of setting up the necessary plumbing, gas, venting, and electrical work. However, it's important to note that this isn't like replacing a conventional tank where everything falls into place easily. Rather, it is like a fitting jigsaw puzzle into place, not easy per se, but not too daunting either. The most fun was renting a rotary hammer from Home Depot to bore the vent holes though brick. For anyone worried about gas lines like me, you may appreciate this little surprise. The unit appears to have an internal gas booster pump. Ingenious, right? I chose to run it off of an existing gas line which was originally fed from a 1-inch line from the meter, with a brief downgrade to a 1/2 inch, before returning to a 3/4 inch. Despite my initial concern, it seems to function flawlessly under these conditions. But I am not complacent, and plan to eventually test all my gas appliances together in full throttle, just to be certain that the supply line capacity holds up. One of the most commendable features of the Rinnai RU199iN? Stable hot water output. Not once did I experience any hot water fluctuations during use. An absolute win! However, I did notice a slightly longer delay to get hot water on a cold startup, taking approximately 10 to 15 seconds longer compared to traditional heaters. But once it gets going, it provides steady, continuous hot water supply. Oh, and I must add - I did the installation myself. So, for all the DIY enthusiasts out there, this little project is quite manageable and rewarding. In conclusion, the Rinnai RU199iN tankless hot water heater has proven to be a stellar addition to my home. It delivers consistent performance, minimal noise, and solid dependability. If what you're after is a top-notch appliance that couples functionality with ease of use, then the Rinnai RU199iN certainly fits the bill. Five stars for this one, without a second thought!

### ⭐⭐⭐⭐⭐ EXCELLENT PERFORMANCE IN ALPINE CLIMATE
*by D***T on September 22, 2022*

This unit outperformed my expectations in a big way. I live in the mountains at 8,000 feet and my cold water comes from a well. In the wintertime, the water is MAYBE 40 degrees when it comes out of the tap. I figured with a 7 gallon/min rating and the incredibly cold ground water, I would be lucky to get 3 or so gallons/min, which would be enough for a single hot shower. Nope! I've had no problem running two simultaneous showers along with the dishwasher in the wintertime. How this thing manages to heat the water by 70 degrees instantly is beyond me but it sure does! I had very minimal plumbing experience but I had no problem installing the unit after doing 10 minutes of YouTube research. I love the fact that the exhaust vent just uses standard Schedule 40 PVC, which is super cheap and easy to work with. As you can see in the pictures, I added a pre-filter to reduce mineral scale buildup as my ground water is very hard. I just swap out the cartridge every 6 months, just like the cartridge in the fridge. After 9 months of use, the unit hasn't yet told me it needs any descaling, but I expect that will come up by the end of the year. The procedure there is very simple. Otherwise, this is a very compact, very attractive unit. Zero issues after 9 months of continuous use.

### ⭐⭐⭐⭐⭐ A good whole house water heater (beware- Amazon installers will not install this!!)
*by S***N on January 11, 2019*

2yr ownership update: Aside from one breakdown due to a faulty part (which was immediately shipped by the manufacturer under warranty) this heater is amazing. Perfectly maintained hot water temperature for as long as you need it. Can run a bath, shower and dishwasher etc and not a slightest drop in hot water pressure. Awesome! I completely recommend this heater without any hesitantion. Our home is 4 bedroom single family home with 2 main bathrooms and 2 smaller washrooms. Firstly, the positives; Fast to heat up (within 1 minutes 2 floors above) Endless flow of hot water Can have 2 showers working and haven't really tested how many faucets we can run at the same time It is quiet and does exactly what we bought it for The only negative was the ordering process. I chose a water heater from Amazon that had a connected Amazon Installation Service option which I chose. The heater arrived quickly and in good condition. I called the Amazon approved contractor to confirm its arrival and they sent someone to come and install it. When the person came, they stated that they did not realize that it was a tankless heater and refused to install it unless they supplied it themselves. All down to Warranty issues apparently. Seeing as our existing electric tank heater had broken down2 days prior, we were left with an issue - no hot water and 3 young kids to keep bathed. I asked them to take a look at the electric heater to see if there was a fuse or something that may have gone wrong. They said that they could book the job for $150 and take a look at it but that it would most likely be the internals. (as it was, when we eventually managed to get a local installer for the new heater, he made the effort to come down and take a look at the existing heater. It was a case of taking off a small panel (4 small screws) and pressing a reset button. Sure enough, it sprang to life again) We then called Amazon to ask them to recommend another installers. The chap who dealt with us at Amazon installation services called around all the local plumbers and none of them would install a tankless heater that they had not sold. Amazon said that they would refund the installation fee and give us a $30 credit for the hassle. After a bit of phoning around we found a local plumber to do the work. I called the actual water heater manufacturer to check that the warranty would still apply and they confirmed that so long as he was a registered professional plumber then he could sign off on the warranty sheet. So the 5 stars is for the heater and only 1 star for the Amazon Installation Service

## Frequently Bought Together

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-21*