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Demand Duo Commercial Hybrid System
Combining the on-demand' continuous supply technology of the Rinnai C199 tankless with an energy efficient and durable 119-gallon storage tank' the Demand Duo™ provides more water heating capacity than a traditional tank in the first hour. The result: Hot water is available to keep pace with demand from short-period' high-spike draws' to a supply that’s ready to go the distance' day in and day out.
- Built standard with C199 Commercial Tankless Water Heater
- Comercial Energy Star certified
- 96% Thermal Efficiency
- Approved for high altitude up to 10'200 ft
- Integrated temperature controller that provides 98°F to 185°F
- Natural Gas or Liquid Propane
- Multiple venting options (concentric' two pipe' room air' common vent)
- Perfect for emergency replacement situations – connection locations similar to most popular high efficiency tanks
| MODEL | Input MBtuH | Efficiency EF rating | Sound db | Dimensions HxWxD | Weight lb | Gallons GPM |
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Warranty Information
- Heat Exchanger for 72 months -
- for 60 months - Tank
- All Parts for 60 months -
- Limited Labor for 12 months -
Available Documents
- View Document (Color, Consumer Literature)
- View Document (Technical Information, Specification Sheet)
- View Document (In the Box, Installation & Operation)