Experience ultimate home comfort and efficiency with the Rinnai I-Series i090CN Combination Condensing Gas Boiler. Engineered for both whole-house heating and domestic hot water, this advanced unit combines Rinnai’s self-cleaning stainless-steel heat exchanger with a secondary flat plate heat exchanger—delivering long-lasting performance and energy efficiency.

With a compact, wall-mounted design, the Rinnai i090CN saves valuable space while maintaining industry-leading AFUE (Annual Fuel Utilization Efficiency) ratings. Compatible with both Natural Gas and Propane, it’s built for modern households demanding reliability, quiet operation, and eco-friendly heating.

Upgrade your home with a boiler that performs smarter, lasts longer, and saves more—the Rinnai i090CN.

Key Features:

• Dual Heat Exchanger System – Self-cleaning stainless-steel primary and flat-plate secondary for superior performance.
• Compact Wall-Mount Design – Space-saving and easy to install in smaller utility areas.
• Whole-House Heating & Hot Water – Provides consistent heat and domestic water simultaneously.
• High Efficiency Output – 90,000 BTU input for central heating and up to 7.9 GPM hot water flow rate.
• ENERGY STAR® Certified – Meets top energy efficiency standards for lower utility costs.
• Ultra Low NOx Emissions – Environmentally responsible and SCAQMD approved.
• Recirculation Ready – Designed for instant hot water convenience.
• Durable Construction – Built for long life with corrosion-resistant components.
  

What’s Included

• Rinnai I-Series i090CN Combination Condensing Gas Boiler
• Wall-mount installation bracket
• User and installation manual
• Hardware and fittings
• Manufacturer warranty documentation
  

Specifications:

Care & Maintenance Instructions

• Annual Inspection: Have a licensed technician perform an annual maintenance check.
• Keep Vents Clear: Ensure air intake and exhaust vents remain unobstructed.
• Water Quality: Use filtered or treated water to reduce scale buildup.
• Regular Cleaning: Wipe the outer surface with a damp cloth—avoid harsh chemicals.
• System Flush: Periodically flush the system to maintain efficiency.
• Follow Manual: Always refer to the official Rinnai maintenance guide for best results.
  

Ideal For:

Modern homes seeking energy-efficient heating and hot water in one compact, durable system.