Enviroment: Local
Condensing Gas Boiler

Condensing Boilers

Simply Smart Engineering. Simply Better Home Heating.

When it comes to home heating, it’s all about comfort, convenience and reliability. At Rinnai, we design products that let you experience all three. Our extensive line of Condensing Boilers provides efficient whole-home heating, water heating or both in one advanced system.

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*Pre-bent pipes only, low-loss header not included in kit.

**Available for E Series and Q Series models; not available for QP Series.

Low-Loss Header

Optimize overall performance and durability with our optional low-loss header kit1. The easy-to-install low-loss header eliminates the need for balanced pump sizing, simplifying system design.

  • Reduced installation time compared to traditional closely spaced Ts with factory- assembled kit
  • Space-saving compact design
  • More efficient heat transfer and reduced heat loss due to fully insulated header

  1. Low-Loss Header Kit is included with Q and Q Premier Series; Optional on E Series models.



Rinnai Condensing Wall-Mounted Gas Boilers ensure a simple installation in any home, and are ready for direct-vent right out of the box—through either a wall or roof penetration. The twinpipe adapter included allows venting with outside air intake. A comforting combination of safety and flexibility is available with concentric venting, which permits outside air intake through a single wall or roof penetration.