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.
Combi models add Smart-Circ Intelligent Recirculation, which learns the home's hot-water pattern and schedules the recirculation pump to match it. An on-board display controller and outdoor reset sensor come standard.
- 4 built-in heating zones
- 7 heating reset curves
- Smart-Circ Intelligent Recirculation (combi models)
- On-board controller + outdoor reset sensor
Sized and installed by Milani
Milani matches the model to your home's heat loss and, for a combi, your domestic hot-water demand, handles the venting, and registers the warranty at installation.
Warranty
Rinnai residential boilers carry a limited warranty on the heat exchanger and on parts, with the term depending on the application and on the unit being registered. Milani registers the boiler at installation and keeps the documentation.
Talk to Milani about the I-Series Plus
We size the system, handle the install and register the warranty — and check which rebates apply to your address.
Product information and specifications on this page are reproduced from Rinnai product literature.
Milani is an independent installing contractor for Rinnai. Rinnai®, SENSEI®, Smart-Circ™, Smart Sense™, Versa Vent™, Quick Flush™, Smart Connect™ and Rinnai Central™ are trademarks of Rinnai Corporation and its affiliates. Efficiency, capacity and warranty terms vary by configuration — Milani confirms the details for your home. This page is provided for homeowner reference and is not an official Rinnai publication.