Internet #306655625

Model #RUR199iN

Super High Efficiency Plus 11 GPM Residential 199,000 BTU Natural Gas Interior Tankless Water Heater

  • Enjoy endless hot water
  • Less space for heating gives you more space for living
  • Includes isolation and PRV valves; no additional purchase needed
  • See More Details

Frequently Bought Together


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 home’s value. You can even qualify for energy efficiency rebates and tax credits. It’s a smart investment for now and the future.
  • California residents
  • ENERGY STAR qualified with Uniform Energy Factor of 0.93
  • ThermaCirc360 technology provides faster hot water with a built-in recirculation pump, timer and thermal bypass valve - ideal for homes without a dedicated return line
  • 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
  • Maximum output, minimum space; suitable for installation in non-traditional spaces such as crawl spaces and attics
  • Multiple venting options available including PVC/CPVC using the Ubbink concentric to twin pipe adaptor allow for an easy installation
  • 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 is recommended
  • Rinnai branded accessories will ensure optimal performance of your Rinnai Tankless Water Heater.
  • Click here for more information on Electronic Recycling Programs

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Compare Similar Tankless Gas Water Heaters

Performance Platinum 9.5 GPM Natural Gas High Efficiency Indoor Tankless Water Heater
current product
Super High Efficiency Plus 11 GPM Residential 199,000 BTU Natural Gas Interior Tankless Water Heater
Super High Efficiency Plus 11 GPM Residential 199,000 BTU/h 58.3 kWh Propane Interior Tankless Water HeaterSuper High Efficiency Plus 11 GPM Residential 199,000 BTU Natural Gas Exterior Tankless Water Heater
NamePerformance Platinum 9.5 GPM Natural Gas High Efficiency Indoor Tankless Water HeaterSuper High Efficiency Plus 11 GPM Residential 199,000 BTU Natural Gas Interior Tankless Water HeaterSuper High Efficiency Plus 11 GPM Residential 199,000 BTU/h 58.3 kWh Propane Interior Tankless Water HeaterSuper High Efficiency Plus 11 GPM Residential 199,000 BTU Natural Gas Exterior Tankless Water Heater
Gas TypeNatural GasNatural GasLiquid PropaneNatural Gas
Flow Rate @ 45 F Rise (gallons/min)
Application TypeResidentialResidentialResidentialResidential
Number of Showers2-42-42-42-4
Water Heater FeaturesUltra LoNox,Wall MountedFreeze Protection,Wall Mounted,WiFiFreeze Protection,Wall Mounted,WiFiFreeze Protection,Wall Mounted,WiFi
Efficiency LevelSuper HighSuper HighSuper HighSuper High
View ProductView ProductView ProductView Product



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


Application Type
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
AHRI Certified,CSA Certified
Labor Warranty
1 Year
Part Warranty
5 Year

Questions & Answers


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!

what else do i need for the installation or everything is included?

Asked by webb August 14, 2020

Greetings Webb, Items included: Rinnai tankless water heater, wall mounting bracket, pressure relief valve and adapter, isolation valve kit, literature bag with manual, labels, etc., vent screens (x2) and vent screen screws (x2), and self-tapping screws (x2). Items not included that are needed for installation include: pipe wrenches (x2), Phillips Head screwdriver, wire cutters, gloves, safety glasses, level, soap/gas leak detector solution, approved venting, Teflon tape/pip compound, and pipe insulation. Thank you!

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

Customer Reviews

  • 918 Customer Reviews
  • 4.2 out of 5 stars overall
100% of customers recommended.
Overall Ratings
Sort By:
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).
Was this helpful?
Meets need and expectations.
Meets need and expectations.
Was this helpful?
Customer review from logo
Installed 6 months 1800sqft 2-lvl home, fast heating, quite operations. Only issue is on the simple thermal bypass for recirculation which is not very effective and results in too much warm water in the cold line. If using recirculation a dedicated line would be much more effective.
Was this helpful?
Inconsistent temperatures,
Customer review from logo
3 months old. Each time we turn on a faucet it varies in water temperature and how long it takes to get warm.
Was this helpful?
Installed by builder with new home purchase
Customer review from logo
It seems that it takes longer for hot water to show up at the faucet. I have scheduled the pump recirculation timing and not quite sure if that really helps in getting hot water sooner. Also, when running hot water it runs cold all of a sudden for a few minutes before turning warm (not hot). Have not been able to figure out the issue. However, the after sales customer service is great.
Was this helpful?
Too noise, is ticking and we can hear noise at out
Customer review from logo
Too noise, is ticking and we can hear noise at out main bathroom sink, also, there have been several occasions where someone will take shower and water is hot and goes cold while showering. This is supposed to be the best and is not , my old 20 years old GAS tank is better, I wish I had never changed it. Also, if the light goes out due to a power outrage, it will not work since it's electric and gas I guess. My old one was just gas and this never happened
Was this helpful?
Buttons work but app doesn't
Customer review from logo
The remote buttons are easy to re-program when necessary, and it's great to have instant hot water. Unfortunately, I only got the phone app to work for a few minutes and it hasn't since.
Was this helpful?
Best Tankless water heater around
Customer review from logo
Besides the fact that this is my 1st time having a tankless water heater, I was curious to know if I was going to experience the negatives about tankless. Well, I am so glad I put my trust in Rinnai because it does not need the waiting time that I thought it would, for the hot water, it is actually quicker than before (with a tank full of ready hot water). It is super silent (a very important factor for me) and very slick looking too (yes I have an aesthetic eye). I am so pleased with the purchase that I would recommend it to anyone looking to upgrade their water heating system. Why boil water if you don't need it? Why have your hot water sitting in a tank, most likely full of rust? Why have it take up precious space in your house? WHY disregard all this AND be accepting of the high hydro bills that come with it? Changing to Rinnai tankless has been a win win decision for me!
Was this helpful?
Looks and functions great
Customer review from logo
I have had it for 3 weeks now. No issues with hot water supply or temperature.
Was this helpful?
With 7 people in our home we don’t run out of hot
Customer review from logo
We like pressing a button to start our water heating instead of running it down the faucet
Was this helpful?
Review this Product
Share your thoughts with other customers