The Rinnai Demand Duo® H-SERIES Indoor Commercial Hybrid Unit is engineered for superior commercial water heating performance. Combining tank and tankless technology, this hybrid unit delivers unmatched efficiency, exceptional first-hour delivery, and rapid tank recovery to keep up with the demands of any business environment. Its advanced features, including dual thermistors and integrated pump control, ensure precise temperature management and optimized energy use. Easy installation, pre-assembled connections, and versatile venting options make this unit ideal for restaurants, hotels, offices, and industrial applications. Save energy, reduce operating costs, and enjoy long-lasting reliability with the Rinnai Demand Duo® H-SERIES.

Key Features:

• Multiple venting options: Single and common vent configurations
• Easy to install with pre-assembled gas and electrical connections
• Dual thermistors for precise temperature control
• Integrated pump control with optimized recovery logic
• Multiple tankless integration options
• High first-hour delivery (119 gallons) and fast tank recovery
• Energy-efficient design reduces operating costs
• Thermal efficiency: 97%
• Long-lasting durability with up to 2X longer warranty than traditional tanks
• Maximum BTU output: 398,000
  

What’s Included

• Rinnai Demand Duo® H-SERIES Hybrid Unit (CHS398100HCXIN)
• Pre-assembled gas and electrical connections
• Installation manual and warranty information
  

Specifications:

Care & Maintenance Instructions

• Regularly inspect venting and water lines for leaks or blockages.
• Flush the tank periodically to remove sediment and maintain efficiency.
• Ensure professional servicing annually for optimal performance.
• Do not modify or bypass safety features to preserve warranty coverage.