Rinnai RX199iN Tankless Water Heaters

The SENSEI™ RX199iN condensing tankless water heater from Rinnai is only the size of a small suitcase, uses either Natural Gas or Propane, and can be installed indoors or outdoors using the Versa-Vent™ accessory. Rinnai SENSEI RX Series tankless water heaters last up to twice as long as tanks and have twice the warranty length. Plus, they save energy by heating water only when it is needed.

  • Uniform Energy Factor (UEF): 0.98
  • 97% Thermal Efficiency
  • Warranty 15 yrs or 12K hours on Heat Exchanger/ 5 years on Parts/ 1 Year on Labor
  • 15,000 BTU/H (minimum)
    199,000 BTU/H (maximum)
  • Indoor
Rinnai RX199iN Tankless Water Heaters was last modified: April 9th, 2024 by HVAC Expert
Product Depth 11.4 inch / (291 mm)
Product Height 30.11 inch / (762 mm)
Product Width 18.5 inch / (470 mm)
Product Weight 55 lb / (24.5 kg)
Gas Type Natural Gas
Installation Type Indoor
Recirculation Capable Yes
Residential ENERGY STAR® Yes
Uniform Energy Factor (UEF) 0.98
Domestic Hot Water Flow Rate (Maximum) 11.1 GPM / (42 L/min)
Wi-Fi Capable Yes
SCAQMD Approved Ultra Low NOx


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People like you shared their purchase and installation experience!

Kenny LeungKenny Leung

Brian once again helped me with my project. Before I have installed a gas fireplace and this time I have installed an LG heat pump with 3 indoor heads. We had an amazing experience with Brian and his team for both projects from quote to installation. Brian is experienced, patient, reliable, and provides great friendly service. He’s also tells very interesting life stories which makes enhances the whole experience. All my future business is going to his company. Thanks again Brian!

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Andrew MunnAndrew Munn

Highly recommended. Brian at Cozy Comfort Plus supplied and installed 6 ductless heads on two compressors. The price was very competitive. The installation crew lead by Hamid did a perfect job. They explained the best locations for the equipment and answered all my questions. The work was completed a very short time after signing the contract. The team cleaned up the job site very carefully every night and were very careful indoorA.

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Jon ConwayJon Conway

We are so happy with the service, support and product that we received from Cozy Comfort Plus. Brian was incredible to work with, he took the time to understand what we were looking for and helped us with the designs and what the best fireplace for us might be. He is extremely easy to work with, very easy to communicate with and so fast and responsive!

Everything happened exactly on schedule and as planned. It was a well oiled machine!! The crews that were here to build everything were super friendly, kind, courteous and knowledgeable.

Highly highly recommend to all 😀👍

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