Product Description
The Rinnai I120SN is a condensing gas boiler designed for heat-only applications. This model operates on natural gas and has an input capacity of one hundred twenty thousand BTUs. It meets high efficiency standards, achieving 95.6% AFUE certification, making it suitable for whole home heating.
- High efficiency: 95.6% AFUE
- Outdoor reset for optimized heating
- Includes stainless steel heat exchangers
Product Highlights
The I120SN delivers reliable performance and a compact design, making it an ideal choice for residential heating.
Product Information
Standard Information
- Fuel Type: Natural Gas
- Mount Type: Wall
Technical Specifications
- BTU Rating: 120,000 BTU
- Overall Dimensions: 10.9 inches x 26.4 inches x 18.5 inches
- Weight: 62 lbs
- Vent Type: Concentric
- Max Pressure: 45 PSI
- Installation Type: Indoor
Why buy from Doctor Paintz
- Sold and shipped by Doctor Paintz – doctorpaintz.us
- Brand-new, factory-sealed stock – never reclaimed or refilled
- Trade pricing and bulk/pallet quantities for HVAC contractors
- US-based order support, tracked shipping on every order

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