Demand Duo®
R-Series
The Next Generation in Hybrid Technology
Replace your standard efficiency atmospheric tank with the latest water heating technology—Demand Duo® R-Series.
Now with More than 2X the warranty of most traditional tanks and NEW Features that Simplify Installation and Optimize Performance.
Unsurpassed Warranty
Demand Duo R-Series delivers reliable performance because water is heated inside the
tankless, NOT the tank. This eliminates thermal stress which leads to a longer service life and
a lower total cost of ownership than other traditional forms of commercial water heating.
With more than 2x the Warranty, the Demand Duo R-Series is the best commercial
solution when replacing traditional atmospheric tank-type water heaters.
Quick and Easy Installations
![Demand-Duo-Features.jpeg](https://rinnai.widen.net/content/1ivzh4hws0/jpeg/Demand-Duo-Features.jpeg?keep=c&crop=yes&color=cccccc&quality=80&u=dkzpaf)
Technology that Boosts Performance
![Demand Duo Performance Information Image](https://rinnai.widen.net/content/qkpbskts71/jpeg/Demand-Duo_Performance_v2.jpeg?position=c&color=ffffffff&quality=80&u=dkzpaf)
![R-Series_Numbers.jpeg](https://rinnai.widen.net/content/abcomp3smc/jpeg/R-Series_Numbers.jpeg?position=c&color=ffffffff&quality=80&u=dkzpaf)