Internet #312511039

Model #RU199iN-3Pack

Super High Efficiency Plus 11 GPM Residential 199,000 BTU Natural Gas Interior Tankless Water Heater (3-Pack)

  • Temperature lock prevents alteration in water temperature
  • Rinnai Circ-Logic helps reduce wait time for hot water
  • Heats water when required for energy-efficient use
  • See More Details

Product Overview

Welcome to ultimate efficiency. With technology that operates only when hot water is needed, super-efficient heating coils, no pilot light and no storage tank to heat and reheat water, you save on energy and utility costs. In fact, Rinnai Tankless Water Heaters use up to 40% less energy than a traditional tank water heater. Plus, with premium technology, increased energy efficiency, an improved Home Energy Rating System (HERS) Index Score and optimized LEED eligibility, our tankless solutions can increase your homes value. You can even qualify for energy efficiency rebates and tax credits. Its a smart investment for now and the future.
  • California residents
  • ENERGY STAR qualified with Uniform Energy Factor of 0.93
  • Equipped with Rinnai Circ-Logic - pair with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation
  • Save time with hot water whenever and wherever you need it, any size home, even for simultaneous uses at multiple fixtures
  • Save energy and reduce utility costs by operating only when hot water is needed
  • Temperature lock function prevents accidental or unauthorized changes to water temperature
  • Complies with South Coast Air Quality Management district 14 ng/J or 20 ppm NOx emission levels
  • Wi-fi ready
  • Residential warranty: limited 15-year or 12,000-hours on heat exchanger, 5-year on parts, 1-year on labor (5-year optional on labor); commercial warranty: limited 8-year or 12,000-hours on heat exchanger, 5-year on parts, 1-year on labor (2-year optional on labor)
  • Note: Rinnai is changing the language in its warranty terms and conditions found in the current user installation manuals, the existing statement will be replaced by the following: this limited warranty applies only to products that are installed in the United States and Canada, improper installation may void this limited warranty, it is recommended that a trained and qualified professional who has attended a Rinnai installation training class complete your installation, all warranties (old or new manual) will be honored as written above
  • You can be confident in choosing to install Rinnai tankless technology in your home; our commitment to quality has made us the #1 selling tankless water heating brand in north America; your family deserves nothing less
  • Professional installation recommended; please call 833-746-6210
  • Rinnai branded accessories will ensure optimal performance of your Rinnai Tankless Water Heater.

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)
Vent diameter (in.)
Water Connection Size (in.)


Application Type
BTU Rating
Efficiency Level
Super High
Finish Family
Silver Metallic
Flow Rate @ 35 F Rise (gallons/min)
9.8 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)
Flow Rate @ 55 F Rise (gallons/min)
Flow Rate @ 65 F Rise (gallons/min)
Fuel Type
Gas Connection Size
Gas Type
Natural Gas
Heat Exchanger Warranty
15 Year
Maximum Temperature (F)
Minimum Activation Rate (gpm)
Minimum Temperature (F)
Number of Showers
Pack Size
Product Weight (lb.)
Required Volt Connection
120 volt
Total BTU
Uniform Energy Factor
Vent Type
Single Wall
Water Heater Features
Freeze Protection,Wall Mounted,WiFi
Wattage (watts)

Warranty / Certifications

Certifications and Listings
No Certifications or Listings
Labor Warranty
1 Year
Part Warranty
5 Year

Questions & Answers


Since it has an installed circulation pump do i still need the wifi module and push button module?

Asked by Cp3 November 26, 2020

What is the maximum number of showers/bathtubs/faucets you can connect?

Asked by CB October 13, 2020

Greetings CB, This unit allows for 6 or more appliances, showers, faucets, etc. to be connected and running at the same time. Thank you!

Can it be connected to a PEX water system? If so, are additional parts needed?

Asked by Nick October 13, 2020

Greetings Nick, Please contact Rinnai directly at 1-800-621-9419. Thank you!

how is this different from the RU199in model? in other words, what is the main difference between...

Asked by Jay October 7, 2020

This unit includes a recirculation pump inside, meaning hot water is circulated through pipes via a time schedule. --Tashay

Do you HAVE to connect it to the interenet for it to work properly?

Asked by Beemer September 24, 2020

Greetings, Internet is required for the internet to work properly because you will not be able to control the recirculation pump in the water heater without it. Thank you!

can it be used as a hot water furnace in a closed hot-water circulating heating system?

Asked by Pass September 20, 2020

Greetings, Please contact Rinnai directly at 1-800-621-9419. Thank you!

Can this use propane?

Asked by Davesb486 September 20, 2020

Greetings, This unit uses natural gas, not propane. Propane should not be used on a natural gas water heater as the unit is not made to handle propane. Thank you!

Does this purchase includes a Control-R wifi module?

Asked by PilEd September 17, 2020

Rinnai says it includes a Control-R

Does this heat your house and give you got water

Asked by Roger September 5, 2020

It can be used in that way. --Tashay

What is the heat exchanger made of stainless?

Asked by Boss August 26, 2020

Greetings, The heat exchanger is made of copper. Thank you!

Super High Efficiency Plus 11 GPM Residential 199,000 BTU Natural Gas Interior Tankless Water Heater (3-Pack) - page 2

Customer Reviews

  • 12 Customer Reviews
  • 5 out of 5 stars overall
100% of customers recommended.
Overall Ratings
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Impressed and some recommendations
I just moved in to my new place and the 50 gal traditional water heater was in need of replacement (hints of leaks surrounded the installation). It was a somewhat hard choice since money savings was just marginal. A tankless had high installation cost and it wasn't clear if it would be recovered with the lowered energy usage. However, the original tank was shoe horned into a nook and made maintenance difficult (e.g. can't easily replace the anode) and it would be nice to use the recovered space for a water softener. Decided on the RUR199i because of the reciculation feature. Installed and mostly working like a champ! Still struggling with the Control-R app for adusting temperature. Haven't called Rinnai yet. But there are some suggestions: Mount it on a wall away from living spaces if possible. There is a low hum when it is in use and if it is mounted on a shared wall with a living space, you'll notice it. The noise is especially noticiable when the reciculation pump is running. Use flexible connections if possible. Things are very tight and it'll save you quite a bit of time. I wanted a neat installation a with pressure valve and hose bibs and all pipes in-wall and that took most of the time. Workout connection locations with the unit on the floor and be aware of the standoff distances from the wall as the cold water connections is close to the wall and if not properly planned could lead to a lot of headaches ;-) If using hard pipe for the condensate drain, add a union to simplify future maintenance (e.g. if you need to remove the unit).
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Meets need and expectations.
Meets need and expectations.
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Awesome works great plenty of hot water...
Awesome works great plenty of hot water
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Rating provided by a verified purchaser...
Rating provided by a verified purchaser
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Very complicated to self install, but videos on UTube helped. Some of the...
Very complicated to self install, but videos on UTube helped. Some of the manual directions needed re- reading and studying a few times. We also ordered a comfort valve to prevent the problem of cold water sandwiches at kitchen sink. Would have liked to install one in bathroom sink also due to long plumbing runs but only 1 of these valves is allowed. Our Water must run quite awhile before getting warm and continue to run to stay warm. We also increased the water temperature by 10 degrees from the preset of 120. Parts for connecting comfort valve are difficult to find to connect to existing standard kitchen sink plumbing.The inside circuit board of the unit is really compact and we hope it lasts as replacing items inside unit could be difficult.
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The Rinnai tankless hot water lived up to its claims....
The Rinnai tankless hot water lived up to its claims. Easy to operate with WiFi to maximize efficiency while still having instant hot water with the recirculation pump. It is very quiet and takes up very little space on the wall in the garage. The pipe covers were easy to install and completed the look of the unit. Well worth the additional investment.
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Built in recirculating pump is probably the best feature
Tankless water heater are expensive, that's a fact. One of the cool thing about this unit over the rest is that it has a built in recirculating pump, giving you a little hot water on demand or by timer or all the time. When my plumber put it in, he forgot to take out the plug at the bottom and program it. It is crucial you do that, else the schedule for the recirculating pump won't work. It's also confusing that you can't turn your water below 120 with the recirculation on. As far as the recirculating pump, running it just 5 minutes will give you a hint of warm water at any part of the house. If you do need to do a full shower, you need to run it longer as you might run into a situation where the pump will bring you an initial shot of hot to warm water, then nothing for 20 second before a big rush of hot water comes on. The unit did nothing wrong, it's just the nature of the pump. You really need to run it for a lot longer if you want hot water all the time
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Install was problem free. Decided to purchase the wired controller since the negative reviews seem to be related to the WiFi module. Unlimited hot water makes it quickly to all faucets, granted my house has dedicated recirc piping. System works problem free and is much better than the old 75 gallon tank I had. Expensive but worth it for the unlimited water.
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I'm in a lot of HOT WATER! Installed myself. Saved...
I'm in a lot of HOT WATER! Installed myself. Saved a ton compared to Pro install. It is a bit noisy but I installed in bedroom closet.
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5 Star Review
Rating provided by a verified purchaser
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