Rinnai · Condensing boilers & tankless
I-Series Plus
The Rinnai I-Series Plus is a wall-hung condensing boiler that simultaneously provides home heating and, on the combi models, domestic hot water. It reaches 96% AFUE, runs on natural gas or propane, and is offered as combi units (water + heat) and solo units (heat only).
Heat and hot water, without interruption
Combi models deliver space heating and domestic hot water at the same time, without one job stopping for the other. Solo models heat only, and pair with an indirect tank when domestic hot water is also required.
Both configurations are wall-hung and run on natural gas or propane, so the boiler fits a range of mechanical rooms and fuel situations.
Comfort controls built in
The I-Series Plus has four heating zones built in and seven heating reset curves, so a multi-zone hydronic system can often be set up without an external zoning panel and the water temperature can be tuned to the emitters in each part of the house.