Precisely engineered accessories can add even more reliability, convenience and flexibility to Rinnai Tankless Water Heaters. With Rinnai Common Venting, up to eight tankless water heater units share the same vent system. This allows for significantly fewer wall or roof cuts, less labor, and longer vent lengths than ever possible with single-unit tankless water heater venting.

perfect unit for our needs no problems with the instalation. Arnold. ON. Thu Dec 17 2015

Precisely engineered accessories can add even more reliability, convenience and flexibility to Rinnai Tankless Water Heaters. With Rinnai Common Venting, up to 8 tankless water heater units share the same vent system. This allows for significantly fewer wall or roof cuts, less labor and longer vent lengths than ever possible with single-unit tankless water heater venting.

Anonymous. US. Tue Jun 30 2026

This is easy to install and works great. Jehanzeb. Allen Park, MI. Sun Apr 03 2022

Didn’t come with connecting parts so couldn’t use.. Anastasia. Tue Feb 28 2023

Precisely engineered accessories can add even more reliability, convenience and flexibility to Rinnai Tankless Water Heaters. With Rinnai Common Venting, up to eight tankless water heater units share the same vent system. This allows for significantly fewer wall or roof cuts, less labor, and longer vent lengths than ever possible with single-unit tankless water heater venting.

Little high for what it is, but as I was always taught its not what it is, its what it does.. and this did the job to get my Value On Demand installed so I am happy. Kenneth. US. Sat Mar 18 2023