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Rinnai CX199iN Commercial Condensing Tankless Water Heater

Rinnai CX199iN Commercial Condensing Tankless Water Heater - Image 2

Rinnai CX199iN Commercial Condensing Tankless Water Heater + 5-Year Labour Warranty (4Most Installation Only)

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Price range: $1,978.00 through $2,560.00

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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.

Rinnai CX199iN – Supplied & Professionally Installed by 4Most Energy

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.

Product Brochure

Why Install the Rinnai CX199iN with 4Most Energy?

Commercial HVAC Specialists

Experienced with commercial hot water system design and installation.

Certified Installers

Installation performed to manufacturer specifications and local codes.

System Optimization

Proper sizing and commissioning for peak performance.

Premium Installation Materials

High-quality piping, isolation valves, venting, and gas components.

Transparent Pricing

Detailed written quotations with no hidden installation costs.

Ongoing Technical Support

Assistance after installation for maintenance and service needs.

Genuine Replacement Parts

Access to original Rinnai replacement components.

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

Up to 97% thermal efficiency
0.98 Uniform Energy Factor (UEF)
Maximum domestic hot water flow of 11 GPM
15,000–199,000 BTU/h modulation range
Commercial condensing heat exchanger
Integrated recirculation capability
Wi-Fi capable for remote monitoring
Ultra Low NOx emissions
Compact wall-mounted cabinet
Flexible PVC, CPVC, polypropylene, and concentric venting options
ENERGY STAR® qualified
Bluetooth setup using the Rinnai Central App

1. Request an Installation Quote

Provide project information or equipment replacement details.

2. System Sizing Consultation

Evaluate peak hot water demand, gas supply, venting, and installation requirements.

3. Equipment Recommendation

Confirm the CX199iN or recommend multiple-unit cascade systems if required.

4. Schedule Installation

Coordinate installation with minimal disruption to business operations.

5. Existing Equipment Removal

Disconnect and remove old water heating equipment where applicable.

6. Professional Installation

Install the unit, venting, gas piping, water connections, condensate drain, and electrical supply.

7. Safety Testing

Verify combustion, gas pressure, venting integrity, leak testing, and system operation.

8. Final Commissioning

Program settings, verify performance, register warranty where applicable, and review system operation.

Manufacturer Warranty

Heat Exchanger: 8 Years (or 12,000 operating hours)
Parts: 5 Years
1-Year Equipment Warranty
5-Year Labour Warranty (4Most Installation Only)

Warranty Claims

Warranty claims should be reported promptly. Our technicians will inspect the installation, diagnose the issue, and coordinate manufacturer warranty support where applicable.

Optional Maintenance Plan

Maintenance plans starting from $12.99/month

Benefits include:

Annual inspection
Descaling and cleaning
Performance testing
Priority scheduling
Reduced repair costs
Improved equipment efficiency and lifespan

       
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   Verified by Trustindex   Top Rated Service
   4.9 Excellent rating Last 12 months 
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  Verified by Trustindex Based on real customer reviews Learn more 
 
 
 
 
 
 
 
   
 
 
      Posted on Google  
   
   Mahvash Madani 
 4 days ago
 
 
 Trustindex verifies that the original source of the review is Google. I had a great experience with 4Most Energy. They provided all the i formation I needed and clearly explained the different options available which made it easy to make an informed decision. Their pricing was reasonable and competitive, and I really appreciate their responsiveness and flexibility in accommodating my needs. The installation team was professional, efficient, and did a great job.Overall, the entire process was smooth and stress-free. I am very happy with the service and would highly recommend them for anyone looking for reliable HVAC services.
  
 
     Posted on Google  
   
   H Lau 
 13 days ago
 
 
 Trustindex verifies that the original source of the review is Google. 
  
 
     Posted on Google  
   
   Harini 
 19 days ago
 
 
 Trustindex verifies that the original source of the review is Google. +0
We had a great experience with Rey and his team during our new Rinnai boiler installation. The technicians did an amazing job and worked efficiently. The technician Sam was knowledgeable, professional, and respectful throughout the installation. He took the time to answer all my questions and made sure everything was properly checked before finishing the job.

They arrived on time and completed the boiler installation on schedule.

We are very happy with the service and would definitely recommend them to anyone looking for reliable and professional HVAC service.

Thanks.
  
 
     Posted on Google  
   
   Vip C. 
 19 days ago
 
 
 Trustindex verifies that the original source of the review is Google. +0
Excellent service and very reasonable pricing for a new AC installation. The team arrived right on time, provided a smooth and professional installation, and there were absolutely no hidden costs. Communication was transparent, proactive, and consistent throughout the entire process. Highly recommend them to anyone looking for reliable and honest HVAC service.
  
 
     Posted on Google  
   
   kevin liu 
 22 days ago
 
 
 Trustindex verifies that the original source of the review is Google. 
  
 
     Posted on Google  
   
   Brian Johnston 
 24 days ago
 
 
 Trustindex verifies that the original source of the review is Google. +1
I was very pleased with the competitive pricing I got specifically from 4most energy. I contacted many companies to get their best quote. Sometimes there are even daughter or sister companies that will give you better quotes than the parent companies. It's best to check around for the identical product with installation from many companies. I was also pleased with the installers. They did have to cut away some insulation to install the Rinnai RX199 on the outside wall the house. Not sure if they should have tried replacing that insulation afterwards, but won't complain about the job they did because I think I got the best price on the market after getting quotes from about a dozen companies.
  
 
     Posted on Google  
   
   Joseph Spitale 
 39 days ago
 
 
 Trustindex verifies that the original source of the review is Google. +0
We recently had a Navien Combi boiler installed by 4Most Energy and had a great experience from start to finish. Rey was our sales representative and Sam was our technician, and both were excellent to work with.

They arrived on time, the installation was fast and efficient, and everyone was friendly and professional throughout the process. Sam did a great job with the installation, and everything is working perfectly.

We’re also very happy with the Navien Combi boiler itself. Overall, we couldn’t be happier with the service, the installation, and the product. We would definitely recommend 4Most Energy.
  
 
     Posted on Google  
   
   Da big_Guy 
 40 days ago
 
 
 Trustindex verifies that the original source of the review is Google. +0
Rey, Ben and Amad thank you very much for the amazing work on my hot water tank purchase and installation. You a have a loyal customer fir life. I will make sure my family and friends use your service.
Zoran.
  
 
     Posted on Google  
   
   Marvin Harrison 
 42 days ago
 
 
 Trustindex verifies that the original source of the review is Google. +2
I contacted 4Most Energy to replace my 14 year old AC unit. Their intake process was smooth. They provided a reasonable quote the same day. The installation of the new AC unit was scheduled and the service provided by Farzad and his associate was completed within a reasonable time. They did a great job on the installation, hauled away the old equipment, and left the job site (both indoors and outdoors) in good condition. I would not hesitate to recommend 4Most Energy for your heating and cooling needs.
  
 
     Posted on Google  
   
   Rodney BROWN 
 42 days ago
 
 
 Trustindex verifies that the original source of the review is Google. +0
Scheduling was quick and easy. The team showed up on time, were quick and efficient and did an overall good job!
  
 
     Posted on Google  
   
   Jag Jasani 
 43 days ago
 
 
 Trustindex verifies that the original source of the review is Google. +0
Great job Rey, Sam and team! My tankless water heater was broken for two months and after getting the run around from Enercare and Reliance, I decided on purchasing a Navien from 4Most Energy and they did a great job explaining the process and installing it the next day. Thank you for the top notch service!
  
 
     Posted on Google  
   
   Maryam Badakhshi 
 50 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Hamid installed a new heater for us. We had a great experience. He and the team were professional and the work was done in a day. We really appreciate their promptness. We’d definitely recommend Hamid.
  
 
     Posted on Google  
   
   Chris Luc 
 53 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Great job by Hamid. Thanks
  
 
     Posted on Google  
   
   Adrian Cann 
 55 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Great service, great price, great technicians, big job but the work was executed with perfection!!!
  
 
     Posted on Google  
   
   Charles Hawkes 
 59 days ago
 
 
 Trustindex verifies that the original source of the review is Google. Arrived promptly, installed new water heater in a professional manner, checked the installation for any gas or water leaks, cleaned up the work site. Very satisfied with the service and pricing. Strongly recommend 4MostEnergy.