Rinnai I-Series Plus Combi Boiler

Upgrade your home’s heating and hot water system with the Rinnai I-Series Plus Combi Boiler (R-CA). This high-efficiency, wall-mounted condensing boiler provides reliable home heating and endless domestic hot water in a compact, energy-saving design. Perfect for homeowners looking to combine performance, convenience, and efficiency in one system.

Why Choose the Rinnai I-Series Plus

The Rinnai I-Series Plus stands out as a top choice for modern homes because it combines smart technology with high-efficiency performance. Key benefits include:

  • All-in-One Solution: Combines home heating and hot water in one compact unit.
  • Energy Efficiency: Condensing technology captures extra heat from exhaust gases for lower energy bills.
  • Smart Controls: Adjust your system with advanced, easy-to-use controls.
  • Space-Saving Design: Wall-mounted installation saves floor space and integrates seamlessly into your home.
  • Reliable Comfort: Provides consistent heating and hot water, even during peak usage.
Rinnai I-Series Plus wall-mounted combi boiler installed in a home
Rinnai I-Series Plus providing instant hot water and home heating

Heating & Hot Water in One System

Unlike traditional boilers, the Rinnai I-Series Plus delivers both whole-home heating and instant hot water. It supports:

  • Radiant floors, baseboard heaters, and hydronic systems.
  • Multiple zones for precise room-by-room comfort.
  • Unlimited hot water for showers, sinks, and appliances.

This eliminates the need for a separate water heater, making your home more efficient and simplifying your heating setup.

High-Efficiency Performance

The Rinnai I-Series Plus is a condensing boiler with up to 95%+ AFUE efficiency. Benefits include:

  • Lower utility bills
  • Reduced environmental impact
  • Improved performance and longevity
  • Quiet operation

With smart modulation, the boiler adjusts its output to match your heating demand, keeping your home comfortable while saving energy.

I-SERIES+ Combi Boilers

Rinnai I-Series Plus condensing gas boiler front view
IP090199C
IP150199C
IP150199C
IP199199C
IP199199C
IP060160C
IP060160C
IP120199C
IP090099C
IP090099C
IP175199C
IP090199C

I-SERIES+ Heat Only Boilers

Smart Technology & Advanced Controls

Take control of your home’s heating with Rinnai’s advanced technology:

  • Remote system monitoring
  • App-based temperature control
  • Easy integration with multi-zone heating
  • Adaptive operation for maximum efficiency

The result is a system that’s as intelligent as it is reliable.

Rinnai I-Series Plus providing instant hot water and home heating
Energy-efficient Rinnai I-Series Plus combi boiler in modern home

Professional Installation by Duncklee Inc.

At Duncklee Inc., we specialize in expert boiler installation and service. Our team ensures your Rinnai I-Series Plus is installed safely, efficiently, and to the manufacturer’s specifications. We also provide:

  • Comprehensive maintenance and service
  • Troubleshooting and repair
  • Personalized recommendations for your home’s size and layout

Trust our experienced team to keep your system running at peak performance.

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