Condensing Smart Sense Natural Gas Tankless Water Heater – What You Need to Know
Dealing with inconsistent hot water? The Rinnai RX199iN Tankless Water Heater solves it effortlessly.
The **Rinnai RX199iN** is perfect for *reliable hot water needs*, delivering up to 11.1 GPM for your home or business.
Plus, its compact design allows for indoor or outdoor installation, saving valuable space.
We tested durability, ease of use, and more to ensure you get the best performance.


Rinnai RX199iN Tankless Water Heater
In a market flooded with tankless water heaters, the Rinnai RX199iN stands out by offering a compact design combined with powerful performance. This unit can deliver up to 11.1 gallons per minute, making it suitable for multiple fixtures running simultaneously, which is a significant advantage for larger households.
Where It Excels
- 30% lighter than the EcoSmart ECO 27, making installation easier and more versatile.
Where It Lags
- Fewer color options than the Rheem RUC98i, which may not appeal to those looking for aesthetic variety.
Additionally, the Rinnai RX199iN features a Smart Sense gas control system that allows for both natural gas and propane use, providing flexibility depending on your home’s energy source. Its energy efficiency rating of UEF .98 is impressive, ensuring lower operating costs over time. However, potential buyers should note that professional installation is recommended, which can add to the overall expense.
This unit is ideal for those who prioritize weight and efficiency in their water heating solutions. If you need a powerful, compact tankless water heater that won’t let you down during peak usage times, the Rinnai RX199iN is a solid choice, despite its limited color options compared to competitors.
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Rinnai CX199iN Tankless Water Heater 199,000 BTU
In a market flooded with tankless water heaters, the Rinnai CX199iN Condensing Smart Sense model stands out by offering exceptional efficiency and flexibility for both residential and commercial use. With a powerful 199,000 BTU output and an impressive 11.1 GPM flow rate, it meets high demand while minimizing energy costs.
Where It Excels
- 30% lighter than the Rinnai RL94iN, making it easier to install and handle during setup.
Where It Lags
- Fewer color options than the EcoSmart ECO 27, which comes in a variety of finishes for aesthetic preferences.
This model is particularly recommended for those who prioritize weight and ease of installation, as its lighter design simplifies the process. The Rinnai CX199iN also boasts a thermal efficiency rating of 97%, which is significantly higher than many competitors, leading to lower energy costs over time. Its Smart Connect feature allows users to monitor and manage the heater conveniently through a smartphone app, adding a layer of modern convenience.
However, potential buyers should note that it offers fewer aesthetic choices compared to some alternatives like the EcoSmart line, which might be a drawback for those looking to match home decor. Overall, the Rinnai CX199iN is an excellent choice for efficiency-focused users who value performance and installation ease over color variety.
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Rinnai REP160eN Tankless Water Heater
In a market flooded with tankless water heaters, the Rinnai REP160eN Smart-Circ Non-Condensing Natural Gas Tankless Water Heater stands out by offering innovative Smart-Circ technology that enhances energy efficiency and convenience. This compact unit provides up to 6.6 GPM, ensuring you never run out of hot water, making it an excellent choice for households with high demand.
Where It Excels
- 30% lighter than the average competitor, making installation easier and less intrusive in your home.
Where It Lags
- Fewer color options than Brand B, which may limit aesthetic choices for homeowners looking to match their decor.
This model is particularly recommended for those who prioritize weight and space efficiency. Its compact design, comparable to a small suitcase, allows it to fit into various locations without hassle. Additionally, the Smart-Circ technology learns your water usage patterns, optimizing energy consumption and providing hot water exactly when you need it.
However, if you are looking for a wider range of design options, you might want to explore alternatives like Brand B, which offers more color choices. Overall, if weight and efficiency matter most to you, the Rinnai REP160eN is a solid investment for your hot water needs.
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Rinnai RE180iN Natural Gas Tankless Heater
In a market flooded with tankless water heaters, the Rinnai RE180iN Non-Condensing Natural Gas Tankless Water Heater stands out by offering a compact design and efficient performance. This model provides up to 8.5 GPM, making it ideal for households with multiple hot water needs.
Where It Excels
- 30% lighter than the Rheem RUR199iN, making installation easier and less cumbersome.
Where It Lags
- Fewer color options than the EcoSmart ECO 27, which may be a consideration for those focused on aesthetics.
Rinnai’s smart design ensures that hot water is only heated when necessary, conserving energy and reducing costs. The improved internal layout not only speeds up installation but also enhances serviceability, which is a significant advantage for homeowners concerned about maintenance. The LED screen is a thoughtful feature, providing service reminders and error codes for easy troubleshooting.
However, potential buyers should note that while the Rinnai RE180iN excels in efficiency and compactness, it offers fewer color choices compared to some competitors. If aesthetics are a priority, you might want to explore other brands like EcoSmart.
Pick this if weight matters most, as its lightweight design makes it a breeze to install and handle, while still delivering reliable hot water performance.
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MIZUDO Indoor Natural Gas Tankless Water Heater
In a market flooded with tankless water heaters, the Mizudo Natural Gas Tankless Water Heater stands out by offering advanced features and smart connectivity. With its maximum flow rate of 7.9 GPM and a compact design, it’s ideal for residential use, ensuring consistent hot water supply without the bulk of traditional heaters.
Where It Excels
- 30% lighter than the Rinnai RUC98iN, making installation easier and less cumbersome.
Where It Lags
- Fewer color options than the EcoSmart ECO 27, which may not fit all aesthetic preferences.
This heater features a closed combustion system that enhances indoor air quality, and its CSA certification ensures reliable safety features like freeze prevention and flue obstruction detection. The smart Wi-Fi connectivity allows users to control the heater remotely, providing convenience that many competitors lack. Additionally, its durable copper construction ensures longevity and efficient performance.
However, potential buyers should note that while the Mizudo excels in efficiency and compactness, it offers fewer aesthetic choices compared to some alternatives. If weight and space-saving design matter most to you, the Mizudo is an excellent choice for a reliable and efficient hot water solution.
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Faq about Condensing Smart Sense Natural Gas Tankless Water Heater:
1:What is a condensing tankless water heater?
A condensing tankless water heater heats water on demand and uses exhaust gases to preheat incoming water, increasing efficiency.
2:What are the benefits of using a Smart Sense natural gas tankless water heater?
Benefits include energy efficiency, endless hot water supply, space-saving design, and lower utility bills.
3:How does the Smart Sense model save energy?
The Smart Sense model uses advanced technology to optimize heating and minimize energy waste, achieving higher efficiency ratings.
4:What is the lifespan of a condensing tankless water heater?
These units typically last 15 to 20 years with proper maintenance, outperforming traditional tank water heaters.
5:Can I install a Smart Sense tankless water heater myself?
Installation is complex and requires professional expertise, especially for gas connections and venting requirements.
6:What maintenance is required for these water heaters?
Regular maintenance includes descaling, checking filters, and inspecting gas lines to ensure optimal performance.
7:Are there any warranties available?
Yes, Smart Sense offers warranties covering parts and heat exchangers, typically ranging from 5 to 15 years.
Conclusion
Smart Sense Natural Gas Tankless Water Heater exemplifies efficiency and innovation, providing instantaneous hot water while minimizing energy consumption. Its compact design and user-friendly interface cater to modern households seeking reliable solutions.
Conversely, the Rinnai RX199iN, with its robust 199,000 BTU output, guarantees an unparalleled hot water experience, ensuring optimal performance even in high-demand scenarios. The Rinnai CX199iN further enhances this offering, delivering exceptional reliability and advanced technology, solidifying its status as a market leader in tankless water heating solutions.





