ThermoMate 9.38 GPM Condensing Residential Natural Gas Tankless Water Heater
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$1,099.99at eBayChecked Nov 9
Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.
Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.
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Lowest price we've seen: $1,099.99 on Nov 10 at ThermoMate. Tracked across 2 stores since Nov 10.
Endless Hot Water. Lower Energy Bills. Smarter Comfort.
The ThermoMate RTC68iN Condensing Tankless Water Heater delivers powerful whole-house performance with industry-leading 0.91 UEF efficiency. Designed for North American homes, this high-output 163,000 BTU natural gas unit provides continuous, on-demand hot water while reducing annual energy costs.
High Efficiency 0.91 UEF – Save More Every Year
With advanced dual heat exchanger technology, this condensing system captures and reuses exhaust heat that traditional tank heaters waste.
Stainless steel condensing heat exchanger
Oxygen-free copper primary heat exchanger
Up to 17% energy savings vs. standard models
Lower gas consumption and reduced carbon footprint
More efficiency. More savings. Greener home.
True Whole-House Performance – Up to 9.38 GPM
Built for busy households.
Supports up to 3 simultaneous showers
2 GPM per shower at 105°F (62°F inlet temp)
Up to 9.38 GPM in warmer climates (77°F+ inlet temp)
Runs showers, washing machines, and kitchen fixtures at the same time
No storage tank. No waiting. No cold water interruptions.
Stable Temperature – No Fluctuations
Featuring an intelligent water mixing valve system, RTC68iN:
Maintains consistent outlet temperature
Eliminates hot-cold fluctuations
Automatically adjusts flow during multi-fixture use
Delivers smooth and precise heating performance
Perfect for families who demand reliable comfort.
CSA Certified Safety – Built for North America
