Upgrade your home with the Rinnai CX Series 11 GPM Indoor Tankless Water Heater – Natural Gas (CX199IN), designed for exceptional performance and intelligent operation. Featuring Smart-Sense™ Adaptive Gas Valve Technology and Smart-Connect™ Bluetooth® control, this premium model ensures consistent hot water, maximum energy efficiency, and unmatched reliability.

Perfect for large households or commercial setups, the CX Series provides up to 11 gallons per minute, allowing multiple showers and appliances to run simultaneously without loss of temperature. Built with a stainless steel primary heat exchanger and backed by a 15-year limited warranty, this heater delivers long-lasting performance and peace of mind.

Key Features:

• Powerful 11 GPM Flow Rate – Ideal for high-demand households or multi-bathroom use.
• Smart-Sense™ Gas Valve Technology – Automatically adapts to Natural Gas or Propane.
• Smart-Connect™ Bluetooth® Control – Connect via smartphone or tablet for quick monitoring.
• Smart-Circ™ Ready – Compatible with optional pump or accessory kit for recirculation.
• High Efficiency (UEF 0.98) – Reduces energy costs while delivering consistent performance.
• Versa-Vent™ Conversion Option – Easily switch from indoor to outdoor installation.
• Durable Construction – Stainless steel heat exchanger ensures long-lasting reliability.
• Compact Wall-Mounted Design – Saves space while maintaining easy service access.
• Extended Warranty – 15 years (heat exchanger), 5 years (parts), 1 year (labor)

What’s Included

• Rinnai SENSEI® CX Water Heater
• Wall Mounting Bracket
• (4) Self-Tapping Screws (4.2 x 25MM)
• Gas Conversion Label (Propane)
• (2) Vent Screens & (2) Vent Screws
• Installation & Operation Manual
• Cascade Cable Assembly (Connect up to 24 units)
  

Specification

Care & Maintenance Instructions

• Annual Maintenance: Schedule professional inspection and descaling once a year to ensure optimal performance.
• Filter Cleaning: Check and clean the water inlet filter every 6 months.
• Venting System: Inspect venting for debris or blockages regularly.
• Temperature Setting: Avoid setting above 140°F for residential safety and energy savings.
• Winter Care: If installed in cold climates, ensure the unit and pipes are properly insulated.