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Rinnai Combi Boiler – i120CN

Rinnai Combi Boiler – i120CN

Top highlights

  • Powerful & Efficient: Natural gas-powered with 95% AFUE efficiency, Energy Star certified for cost savings.
  • Whole-Home Solution: Provides both high-volume domestic hot water and efficient heating for the entire home.
  • Smart Technology: Features an integrated modulating pump and outdoor reset sensor for optimized heating performance.
  • High Flow Rate: Delivers up to 9.8 gallons per minute, ideal for homes with high hot water demand.
  • Compact & Durable: Stainless steel and polyvinyl chloride build; lightweight, compact design for easy installation.
  • Flexible Control: Supports connection to two zone pumps for versatile heating control.

Price Range: $6999-$8499

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The I-Series i120CN by Rinnai
The I-Series i120CN combines innovation and efficiency with its exclusive self-cleaning stainless-steel heat exchanger and a secondary flat plate heat exchanger. This versatile combi boiler delivers reliable whole-house heating along with simultaneous domestic hot water. With a power input of up to 120,000 BTU, it is fueled by either natural gas or propane and boasts one of the highest Annual Fuel Utilization Efficiency (AFUE) ratings in the industry. Its compact, wall-mounted design saves valuable space compared to traditional boilers.

- Warranty: 12 years on heat exchanger, 5 years on parts, and 1 year on labor.

- BTU Range: 15,000 BTU (minimum) to 199,000 BTU (maximum).

  • Product Depth: 10.9 in / (276 mm)

  • Product Height: 26.4 in / (671 mm)

  • Product Width: 18.5 in / (471 mm)

  • Product Weight: 76.1 lb / (34.5 kg)

  • Gas Type: Natural Gas

  • Recirculation Capable: Yes

  • Residential ENERGY STAR®: Yes

  • Domestic Hot Water Flow Rate (Maximum): 9.8 GPM / (37.1 l/min)

  • SCAQMD Approved: Ultra Low NOx

  • Central Heating Capacity: 120,000 BTU / (35.2 kW)

Looking for a high-performance combi boiler with expert installation?

At HVAC Ontario, our Rinnai-trained technicians ensure your Rinnai i120CN combi boiler is installed to the highest standards, strictly following Rinnai’s guidelines. Our team receives ongoing training directly from Rinnai, so you can trust in the quality and precision of our work. Plus, we back every installation with industry-leading guarantees for your peace of mind:

- No Lemons Guarantee: If the heat exchanger on your new Rinnai i120CN combi boiler fails twice within the first 5 years, we’ll replace the entire unit at no cost to you.

- $250 No Frustration Guarantee: If your combi boiler stops working and leaves you without heating or hot water, we’ll have a technician at your home within 24-48 hours. If we fail to meet the 48-hour window, we’ll compensate you with $250 for the inconvenience.

- Next Day or $100 Off: Place your order before 12 P.M., and we guarantee next-day installation of your Rinnai i120CN combi boiler. If we can’t install it by the next day, you’ll receive $100 off your purchase.
Combi Boiler Without Installation: Your unit comes with a standard 1-year parts warranty for essential coverage.

Combi Boiler With Installation by HVAC Ontario: When installed by HVAC Ontario, enjoy a 15-year limited parts and labor warranty. If there’s an issue, we’ll handle it for you:

- $250 No Frustration Guarantee: If your combi boiler stops working and you’re left without heating or hot water, we’ll have a technician at your home within 24-48 hours. If we fail to meet the 48-hour window, we’ll compensate you with $250.

Customer Reviews

Voices of Satisfaction: What Our Customers Think About Us

I had arranged with Abdul to have a tankless water heater installed and my old 50 gal tank removed . Ulmo and Tankeh arrived on schedule and the whole job was done to my complete satisfaction. I would recommend them highly. Thank You HVAC Ontario

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Kerry Collins

Professional company. I got a competitive quote. Technician came on time, completed the work and cleaned up after. Took about 2 hrs to remove the old tankless and install the new unit. A smooth process and I'm happy with the work. Thank you.

Google Review

Ainee Chung

Spoke with Abdul. Very professional company. Technician Raj and Kamol came on time, completed the work and cleaned up after. Very happy with the work . Hot water is back and running.
Thank you for your professionalism.

Google Review

Kathy Toth

I had a regular hot water tank replaced with a tankless type by HVAC Ontario. Abdullah and Bilal were very helpful, courteous and professional from the start and even with after care. The technicians they sent who installed the furnace were very caring and professional as well. They walked us through how the system work. Awesome!

Google Review

Neil Abam

Abdul and the team did a great job answering all our questions - took the time out to do a site inspection at our request. We never felt pressured about any of the decisions we needed to make. And ultimately our system works great! I definitely would recommend them to anyone. You wont regret it.

Google Review

Brittany Bourassa

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