Meet the Rinnai Sensei CX 11 GPM Commercial High Efficiency Tankless Water Heater—a smart, powerful on-demand hot water solution for busy homes and light commercial spaces. Its compact design and advanced features deliver reliable warmth when you need it, without wasting energy or space.

Key Features & Design

• Flow rate: delivers hot water up to 11.1 GPM, great for multiple simultaneous showers.
• Energy efficiency: Uniform Energy Factor of 0.98, helping lower utility bills without sacrificing comfort.
• Heat output: powerful 199,000 BTU/h for high-demand households.
• Fuel flexibility: works with propane or natural gas.
• Temperature control: customize between 98°F to 185°F for baths, cleaning, and more.
• Installation & maintenance: designed with input from professionals for faster installs, easier service, and longer lifespan, plus an efficient flushing process to prevent scale buildup.
• Venting & emissions: vent up to 75 feet with a 2-inch pipe and meets Ultra Low NOx emissions standards.
• Design footprint: space-saving size that fits in tight spaces, indoors or outdoors, without compromising performance.

Smart control & reliability

The CX Series offers smart features and reliable hot water control right from your phone, plus straightforward maintenance and smart monitoring for peace of mind.

Delivery & support
Free USA shipping. Your Rinnai Sensei CX Series Tankless Water Heater will be packed and shipped within 1-3 business days and delivered to you between 5-10 business days.