Rheem IKONIC RTGH-S11i Tankless Water Heater vs Rheem RTG-84DVLN-3 Tankless Water Heater

The IKONIC RTGH-S11i is the stronger unit: condensing, 96% efficient, 11.2 gpm and 199,900 BtuH, with stainless primary and secondary heat exchangers and a 15-year heat exchanger warranty. The RTG-84DVLN-3 is a non-condensing 8.4 gpm unit at 180,000 BtuH that is smaller, lighter and simpler to vent. Buy the IKONIC for a large household or cold incoming water; buy the RTG-84DVLN-3 for a smaller home where a short vent run and easy one-person install matter more than peak output.

• Choose the Rheem IKONIC RTGH-S11i if you have a big household, cold groundwater, or several showers running at once and want the higher flow, condensing efficiency and longer heat exchanger coverage.
• Choose the Rheem RTG-84DVLN-3 if you have a smaller home, a short vent run, and want a lighter, more compact unit that is easier to install and service.