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Rinnai M120CN residential condensing combination, natural gas boiler is compact, wall mounted, designed for easy installation as a retro-fit to traditional less efficient boilers, and can deliver whole house heating and domestic hot water heating for homes with up to three bathrooms.

  • One of the most efficient combi boilers available (AFUE Rating pending)
  • Stainless steel primary boiler heat exchanger for unmatched performance and durability; Copper nickel integrated DHW plate heat exchanger
  • Compact wall-mounted design saves space over traditional boilers
  • Features an integrated modulating pump, and outdoor reset sensor (in the box)
  • Flexible venting options with approved Concentric, PVC, CPVC, Stainless Steel, Polypropylene (rigid and flex), for single-pipe exhaust, room air and two-pipe systems
  • Cost-effective, simplified installation-fewer components needed
  • Professional installation recommended
  • Residential warranty: 12-year on heat exchanger, 2-year on parts, 1-year on labor.
  • Commercial warranty: 5-year on heat exchanger, 2-year on parts, 1-year on labor
  • Technical Specs

    SKU: 81932
    Model: M120CN
    color: White sell pack width in inches: 31.5
    product type: Tankless Water Heaters gas connection: 3/4" MNPT
    flow rate: .4 to 4.2 prop65 warning: This product can expose you to chemicals including nickel compounds, lead and lead compounds which are known to the State of California to cause cancer, birth defect or other reproductive harm. For more information, visit
    commercial warranty: 5 yr / 2 yr / 1 yr cec certified: Yes
    country of origin: US btu rating: 23,500 / 6.9
    sell pack weight in lbs: 95 lb height: 31.8
    sell pack height in inches: 11 fuel type: Natural Gas and Propane
    consumer warranty: 12 yr / 2 yr / 1 yr weight: 84 lb
    collection: M-Series certifications: AHRI, CSA, CEC, Energy Star, Mobile Home Certified
    product upc code: 766156010576 voltage rating: 120 AC
    depth: 10.46 mounting: Indoor Only
    temperature range: 104-149 width: 17.3
    sell pack length in inches: 22.6

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