Condensing Gas Boilers

Smarter is Better

Whether it's consistent heat throughout a home, pleasant humidity levels, or continuous hot water, Rinnai's line of Condensing Boilers keeps comfort with exceptional performance and efficiency. Our advanced smart system technology even includes an outdoor reset sensor that continually adjusts to changing temperatures.

Quality From the Inside Out

  • Proprietary self-cleaning stainless steel heat exchanger is backed by a 12-year warranty*
  • OSS (one-side sealed) construction maintains integrity during heat exchanger expansion and contraction
  • E Series boiler pump maximizes performance of boiler to match system requirements
          *Visit for complete warranty details

Efficient Warmth

  • Conventional heating systems waste energy through heat loss vented into the atmosphere
  • Rinnai Condensing Gas Boilers recover heat energy discharged into the flue and return it to the heat exchanger for maximum efficiency
  • One of the highest AFUEs (Annual Fuel Utilization Efficiency) in the industry
  • Fully modulating boiler pump uses only as much energy as needed for even more savings

Easy to Install

  • Wide range of options for existing homes and new construction
  • Each model offers reduced space requirements compared to traditional boilers
  • Multiple venting options for installation in a variety of locations
  • System arrives complete with less assembly needed
  • Condensing boilers ship with factory-assembled low-loss header and pre-programmed outdoor reset sensors (factory assembled kit is included with Q Series model