Rinnai RU199iN Tankless Water Heaters

Enjoy an endless supply of hot water with the SENSEI™ RU199iN Super High Efficiency Plus condensing tankless water heater from Rinnai. Only the size of a small suitcase, the natural gas RU199iN model is compact, easy-to-install and perfect for indoor locations.

  • ENERGY STAR® Qualified with an Energy Factor of 0.96 / Uniform Energy Factor of 0.93
  • 15,000 BTU (Minimum) / 199,000 BTU (Maximum)

Homeowner Conveniences

  • Faster hot water with recirculation for less waiting and less waste
  • Start recirculation and more with smartphone or Amazon Alexa™
  • Energy efficiency and significant savings on home energy bills
  • More usable space thanks to suitcase-sized, wall-mounted units

Most Flexible Venting in the Industry

  • 14 possible vent configurations
  • Up to 65′ vent runs with 2″ PVC options
  • 9 compatible vent manufacturers*
  • Only a single wall penetration required
  • Simple positive-fit components for secure connection
  • Joint seals expand/contract with weather to prevent damage
  • Assembly and adjustment are easy
  • *Includes PVC

Easy Installation and Serviceability

  • Adjustable mounting plate with lip for easy hanging almost anywhere
  • Quick and easy gas conversion in just 3 steps with inexpensive kit
  • Rotating isolation valves to accommodate more applications
  • Easy parameter adjustments with simple, accessible control panel
  • Simple Wi-Fi remote monitoring with detailed system information
  • Convenient access to all key components for fast, easy service

RU199iN

Manufacturer Trade Model Number – U.S. RU199iN
Product Depth 11.45 in / (290 mm)
Product Height 31.3 in / (795 mm)
Product Width 18.5 in / (470 mm)
Product Weight 64 lb / (29 kg)
Gas Type Natural Gas
Installation Type Indoor Only
Recirculation Capable Yes
Residential Energy Star Yes
Uniform Energy Factor 0.93
Energy Factor 0.96
Domestic Hot Water Flow Rate (Maximum) 11 GPM / (41.6 l/min)
Wi-Fi Capable Yes
SCAQMD Approved Ultra Low NOx

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People like you shared their purchase and installation experience!

M BM B

Brian and his team did a great job and went above and beyond to ensure I was satisfied. They installed a new heat pump system, furnace and tankless water heater. They dealt with a faulty water heater tirelessly, trying diagnose an unusual code that kept coming on, eventually replacing the unit. I really appreciated their diligence in keeping me updated, and how swiftly it was switched out when necessary. I would highly recommend them for their work ethic and professionalism

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G KG K

We are very pleased with the way Brian and Cozy comfort plus conducted its business. Very professional and efficient. His installers were great. Very knowledgeable, kind and took their time to explain every step of the installation process. I can recommend this company for their reliability.

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Vito Dell'AeraVito Dell'Aera

Customer satisfaction is definitely their priority.
From start to finish, professional services.
I had Brian and the Cozy Comfort team look after my mother-in-law's HVAC install a few years ago as well, and we were very satisfied again.

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