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The Rinnai CX199iN Commercial Condensing Tankless Water Heater is designed for light commercial applications that require reliable, high-efficiency hot water throughout the day. Ideal for restaurants, cafés, gyms, salons, medical clinics, offices, laundromats, and dry cleaning businesses, the CX199iN delivers up to 199,000 BTU/h, 11 GPM, and 97% thermal efficiency while reducing energy costs and saving valuable installation space for a wide range of light commercial applications.
The Rinnai CX199iN Commercial Condensing Tankless Water Heater is designed to provide reliable, energy-efficient hot water for light commercial applications with consistent daily demand. Delivering up to 199,000 BTU/h, 11 GPM, and 97% thermal efficiency, it offers continuous hot water while helping reduce energy consumption and operating costs. The CX199iN is an excellent solution for restaurants, cafés, gyms, salons, medical clinics, offices, laundromats, dry cleaning businesses, and other light commercial properties that require dependable performance without the limitations of a traditional storage tank.
Its compact wall-mounted design saves valuable mechanical room space, making it ideal for both new construction and retrofit installations. The commercial-grade stainless steel condensing heat exchanger is built for long-term durability, while integrated Wi-Fi connectivity and advanced controls simplify system monitoring, diagnostics, and maintenance. Flexible venting options, including approved PVC, CPVC, polypropylene, and concentric vent systems, provide greater installation flexibility across a variety of commercial buildings.
Proper system sizing is essential to ensure your business has sufficient hot water during peak operating hours. At 4Most Energy, our experienced technicians evaluate your property's hot water demand, fixture count, gas supply, venting configuration, condensate drainage, and installation requirements to recommend the right solution for your application. For businesses with higher demand, multiple Rinnai CX Series units can be installed in a cascade configuration to increase capacity while providing built-in redundancy and efficient system operation.
Every installation is completed in accordance with manufacturer specifications and local building codes to ensure safe, reliable, and long-lasting performance. From equipment selection and professional installation to system commissioning and ongoing support, 4Most Energy delivers complete commercial hot water solutions designed to keep your business operating efficiently for years to come.
| Specification | Value |
|---|---|
| Model | CX199iN |
| Product Type | Commercial Condensing Tankless Water Heater |
| Fuel Type | Natural Gas |
| Input Capacity | 15,000–199,000 BTU/h |
| Maximum Flow Rate | 11 GPM |
| Thermal Efficiency | 97% |
| Uniform Energy Factor | 0.98 |
| Installation | Indoor |
| Mounting | Wall Mounted |
| Recirculation | Yes |
| Wi-Fi | Yes |
| Emissions | Ultra Low NOx |
| Electrical | 120V, 60Hz |
| Height | 30.11 in |
| Width | 18.5 in |
| Depth | 11.4 in |
| Weight | 58 lb |
| Venting | PVC, CPVC, Polypropylene, Concentric |
Provide project information or equipment replacement details.
Evaluate peak hot water demand, gas supply, venting, and installation requirements.
Confirm the CX199iN or recommend multiple-unit cascade systems if required.
Coordinate installation with minimal disruption to business operations.
Disconnect and remove old water heating equipment where applicable.
Install the unit, venting, gas piping, water connections, condensate drain, and electrical supply.
Verify combustion, gas pressure, venting integrity, leak testing, and system operation.
Program settings, verify performance, register warranty where applicable, and review system operation.
Warranty claims should be reported promptly. Our technicians will inspect the installation, diagnose the issue, and coordinate manufacturer warranty support where applicable.
Maintenance plans starting from $12.99/month
Benefits include:
