Rinnai I Series Natural Gas or Liquid Propane Boiler with 120,000 BTU Input

The I- Series i120SN model features Rinnais exclusive self-cleaning stainless-steel heat exchanger coupled with a secondary flat plate heat exchanger. This heat-only model can deliver whole house heating to enhance your comfort. The i120SN provides an input rating of 120K BTU. Fueled with either Natural Gas or Propane this Rinnai condensing gas boiler has obtained 1 of the highest AFUEs (Annual Fuel Utilization Efficiency) in the industry. Plus, the compact wall-mounted design saves space over traditional boilers.