Description
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
This CSA-certified natural gas unit includes 8 built-in protections:
- Flame-out protection
- Boil-dry protection
- Freeze protection (auto activates at 41°F)
- Overheating protection
- Over-temperature lock
- Pipe blockage protection
- Excess air pressure protection
- High-temperature safety control
Sealed combustion design improves efficiency while significantly reducing operating noise.
PVC Venting Compatible – Lower Installation Cost
Unlike traditional tankless units requiring expensive stainless steel venting (300°F+ exhaust), this condensing system reduces exhaust temperature to:
158–194°F (70–90°C)
- Compatible with standard PVC venting
- Lower material costs
- Easier basement or closet installation
- Ideal for retrofit projects
Condensate Management
As a condensing unit, RTC68iN produces mildly acidic condensate water.
- Requires drainage connection
- External condensate neutralizer kit recommended (sold separately)
- Protects plumbing system from corrosion
FREE Shipping to U.S. Mainland addresses only. Unfortunately for us, we do not offer free shipping to Alaska, Hawaii, Virgin Islands, Puerto Rico, Guam or Canada, however if you do need to ship to these places, please kindly call us and the freight will be paid by you based on the specific address you can provide for us.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
For returns due to buyer's remorse (ie: Order by mistake, Does not fit, Change my mind, No longer needed, etc) we will deduct 20% of your total refund amount for the reason of the loss caused to us as a vendor, which means only 80% of your total refund will be sent back to your account. For a defective return, a full refund will be sent back to your account.
Payment & Security
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