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Commercial tankless gas water heater

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Rheem Commercial tankless gas water heater IKONIC Commercial Condensing Tankless

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Rheem Commercial water heating Commercial tankless gas water heater Repair, maintenance, and replacement planning
Rheem IKONIC Commercial Condensing Tankless product image

Technical Specifications

Product Specs

  • Up to 98% thermal efficiency
  • One unit supports natural gas and liquid propane with a fuel conversion kit. Transitions between indoor and outdoor use with an optional kit
  • Manifold capable up to 32 units
  • PVC/PP common venting up to 12 units
  • 8 Year Heat Exchanger Warranty
  • 11.2-11.2 GPM
  • SKU: RTGH-CSR11i
  • Warranty Years: 8
  • Model: IKONIC Commercial Condensing Tankless
  • GPM: 11.2
  • Fuel: Natural Gas,Propane Gas
  • WiFi Connectivity: Yes
  • Leak Detection: Yes
  • Depth: 13.69"
  • Height: 28.56"
  • Width: 17.31"
  • UEF: 0.96
  • Energy Star Rated: Yes
  • Brand: Rheem
  • Model or series: IKONIC Commercial Condensing Tankless
  • Equipment type: Commercial tankless gas water heater
  • Product group: Commercial water heating
  • System role: Water-heating equipment for domestic or commercial hot-water loads
  • Application: Commercial, light-commercial, or managed-building HVAC and water-heating applications
  • Compatibility check: Verify fuel type, venting, electrical requirements, capacity, controls, and installation clearances.
  • Verified source: rheem.com

Useful troubleshooting details

  • Confirm the exact Rheem model or SKU, serial number, equipment age, and installation location before scheduling service.
  • Share photos of the data plate, equipment cabinet, nearby controls, access area, and any visible leaks, ice, alerts, or error codes.
  • For water-heating equipment, note hot-water symptoms, temperature swings, pressure concerns, venting, condensate, scale, and maintenance history.
  • Imported official SKU example: RTGH-CSR11i.

Service planning

How GreenFlow handles IKONIC Commercial Condensing Tankless requests

1

Identify the equipment

Confirm the model or series name, serial number if available, photos, and whether the unit is roof, exterior, basement, or mechanical-room equipment.

2

Describe the service issue

Share no heat, no cooling, weak airflow, error codes, alarms, leaks, noise, control problems, or comfort complaints.

3

Review access and history

Include access notes, tenant or business-hour constraints, filter status, recent repairs, and maintenance records when available.

4

Plan the next step

GreenFlow can route the request for diagnostics, repair planning, maintenance, replacement scope, or related system upgrades.

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Michele Z.

Andrey was professional, prompt, smart, thorough and exceedingly pleasant. We are likely switching our current HVAC company to Green Flow.

Neal V.

In an industry that often fraught with contractors taking advantage of homeowners, Andrey was honest with his assessment and willing to install a product acquired elsewhere (most want that margin themselves), patiently answered my questions (I’m an engineer so like to understand what’s happening), and proactively offered practical...

Murali S.

HVAC technician was punctual, followed up well, completed quick repairs, ensured the issue was resolved, and provided helpful recommendations.

John F.

I needed 2 new AC units and decided to go with high efficiency heat pumps. I chose Greenflow because of the equipment they offered, and the price (2nd lowest quote and much cheaper than the average of all quote we received). Their technicians were very detail oriented and...

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