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Rheem RTGH-S11I IKONIC High Efficiency Tankless Water Heater

Rheem RTGH-S11I IKONIC High Efficiency Tankless Water Heater

Rheem RTGH-S11I IKONIC High Efficiency Tankless Water Heater
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Rheem Super High Efficiency IKONIC RTGH-S11I 199,000 BTU Field Convertible Natural Gas to LP Propane Tankless Water Heater 

  • .96 UEF – ENERGY STAR® Rated
  • Save up to 33% per year in energy costs
  • Qualified for local utility rebates
  • 199,000 BTUs

Easy Installation

  • PVC Vent runs up to 70' (2"), 150' (3")
  • Easy set up with full-text digital display and no dip-switches
  • Field gas convertible from natural gas to LP (propane) - conversion kit included
  • Convert from Indoor to Outdoor Installation with Outdoor Conversion Kit SKU: RTGH-SX

Ready for Retrofits

  • Allows flex venting through existing B-vent up to 50'
  • 1/2" Gas line compatibility (subject to local code)
  • High Altitude Compliant up to 10,200 Ft elevation installation
  • Approved for installations in Manufactured Home (Mobile Home) environments

Key Features

  • Stainless steel Primary and Secondary heat exchangers provide increased efficiency and durability
  • Hot-start programming™ ensures the unit is in a ready state between back-to-back usage, avoiding any cold water bursts – Rheem® Exclusive!
  • Best in class .96 UEF Efficiency 


15 Year Heat Exchanger - (w/ registration)
12 Year Heat Exchanger - (w/o registration)
5-Year Parts
1-Year Labor


Max GPM11.2
Recirc Incl.No
Warranty15 Yrs
Product Depth (in.) 13.69"
Product Height (in.) 28.56"
Product Width (in.) 17.31"
Fuel Type Natural Gas
UEF 0.96
Sustainable Yes
Primary Warranty 15 Yrs
Low Nox Yes
High Altitude Compliant Yes
Max GPM 11.2

If you have any questions give us a call or send us an email and one of our tankless water heating experts will be happy to help.

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