Struggling with inconsistent hot water? The Navien gas tankless water heater delivers reliable comfort in no time.
The **Rinnai RXP199iN** is perfect for providing *endless hot water* for your home, accommodating high-demand needs with ease.
Plus, its smart technology optimizes energy use, saving you money on utility bills.
We tested durability, ease of use, and more to ensure you get the best performance.


Rinnai RXP199iN Tankless Water Heater
Rinnai RXP199iN Condensing Smart Sense Tankless Water Heater: 11.1 GPM, compact design, 199,000 BTU, indoor/outdoor installation.
Benefits
- Provides hot water for up to 7 fixtures simultaneously.
Drawbacks
- Professional installation recommended.
The Rinnai RXP199iN is a game-changer for those seeking an efficient hot water solution. With a capacity of up to 11.1 gallons per minute, it can easily support multiple fixtures at once, making it ideal for busy households. Its compact size, comparable to a small suitcase, allows for versatile installation options, either indoors or outdoors. The Smart Sense gas control system ensures that you can use either propane or natural gas, catering to various needs and preferences.
This unit boasts a remarkable energy efficiency factor of UEF .98, which translates to lower energy bills and reduced environmental impact. The Smart-Circ Intelligent Recirculation feature learns your usage patterns, optimizing water delivery and ensuring that you have hot water when you need it. Additionally, the Quick Flush feature simplifies maintenance, allowing for easy upkeep.
However, it’s important to note that professional installation is recommended to ensure safety and compliance with local codes. While this may add to the initial cost, it guarantees a proper setup. Overall, the Rinnai RXP199iN is a practical pick for small spaces and anyone looking to upgrade their hot water system efficiently.
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Rinnai RX199iN Tankless Water Heater
Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Provides up to 11.1 GPM, supporting up to 7 fixtures simultaneously without running out of hot water.
Drawbacks
- No WiFi module included for remote control; must be purchased separately.
This compact tankless gas water heater is perfect for homeowners seeking efficiency and space-saving solutions. Its design allows for both indoor and outdoor installation, making it versatile for various setups. The Smart Sense gas control system ensures optimal performance whether using natural gas or propane. The unit’s energy efficiency is impressive, boasting a UEF of .98, which translates to significant savings on energy bills.
However, the lack of a WiFi control module included in the package may be a drawback for those who prefer smart home integration. Professional installation is recommended, which could add to the initial cost. Overall, the Rinnai RX199iN is a practical pick for small spaces and households that require a reliable and efficient hot water supply without the bulk of traditional water heaters.
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Rinnai RX160iN Tankless Water Heater
Rinnai RX160iN Condensing Smart Sense Tankless Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Provides up to 9 GPM, servicing up to 6 fixtures simultaneously without running out of hot water.
- Compact size allows for installation in tight spaces, making it ideal for homes with limited room.
- High energy efficiency with a UEF of .97, reducing energy costs while delivering reliable performance.
- Versatile installation options for both indoor and outdoor settings.
- Smart Sense gas control system optimizes performance based on demand.
Drawbacks
- Professional installation recommended, which may add to the overall cost.
- No WiFi control module included, requiring an additional purchase for remote access.
The Rinnai RX160iN is a practical pick for small spaces that need efficient hot water solutions. Its compact design and powerful output make it a valuable addition to any home, ensuring that hot water is always available when needed. However, potential buyers should consider the installation requirements and additional costs for smart features. Overall, this tankless water heater is a solid investment for those seeking efficiency and reliability.
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Rheem RTGH 8.4 GPM Tankless Water Heater
Rheem RRTGH84DVLN3701171: 8.4 GPM flow rate, stainless steel construction, 1-year labor warranty, 15-year heat exchanger warranty, 5-year parts warranty.
Benefits
- Provides hot water on demand with a flow rate of up to 8.4 GPM, making it suitable for multiple fixtures.
Drawbacks
- Requires professional installation, which can add to initial costs.
The Rheem RRTGH84DVLN3701171 is an efficient choice for homeowners looking to maximize their hot water supply without the bulk of a traditional tank. With a powerful 157,000 BTU output, it delivers consistent hot water across various settings, making it ideal for families or homes with high hot water demands.
One of the standout features is its ability to maintain a temperature range between 100°F and 140°F, providing flexibility for different needs. The electric ignition system enhances reliability, ensuring that you have hot water when you need it. However, it’s important to note that the installation process can be complex, and hiring a professional is recommended, which may increase overall costs.
This model is a practical pick for small spaces as it eliminates the need for bulky storage tanks, allowing for efficient use of space while ensuring you have hot water readily available.
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Rinnai CX199iN Tankless Water Heater 199,000 BTU
Rinnai CX199iN Condensing Smart Sense Commercial Natural Gas or Propane Tankless Water Heater: 199,000 BTU, 11.1 GPM, indoor/outdoor installation, 97% thermal efficiency, 2-year warranty.
Benefits
- Provides 11.1 GPM of hot water, ideal for large households.
- 97% thermal efficiency reduces energy costs significantly.
- Smart Connect allows for effortless monitoring via smartphone app.
- Flexible installation options with conversion kit for recirculation.
Drawbacks
- Professional installation recommended for optimal performance.
- Higher upfront cost compared to traditional water heaters.
A practical pick for commercial use or large families needing reliable hot water on demand.
To buy this product, click here.
Faq about Navien Gas Tankless Water Heater:
1: What is a Navien gas tankless water heater?
A Navien gas tankless water heater is a high-efficiency water heating system that provides hot water on demand without the need for a storage tank.
2: How does a Navien gas tankless water heater work?
It heats water directly as it flows through the unit, using gas burners to deliver hot water instantly, ensuring you never run out.
3: What are the benefits of using a Navien gas tankless water heater?
Benefits include energy efficiency, space-saving design, continuous hot water supply, and lower utility bills compared to traditional tank heaters.
4: How do I install a Navien gas tankless water heater?
Installation should be done by a qualified professional to ensure safety and compliance with local codes and regulations.
5: What maintenance is required for a Navien gas tankless water heater?
Regular maintenance includes descaling the unit annually and checking for any gas leaks or blockages to ensure optimal performance.
6: What is the lifespan of a Navien gas tankless water heater?
With proper maintenance, a Navien gas tankless water heater can last 15 to 20 years, significantly longer than traditional tank systems.
Conclusion
The Rinnai RXP199iN Tankless Water Heater exemplifies innovation with its superior energy efficiency and advanced technology, catering to high-demand households. Its seamless integration of smart features ensures optimal performance while minimizing energy consumption, making it a prudent choice for eco-conscious consumers.
Conversely, the Rinnai RX199iN Tankless Water Heater stands out for its reliability and consistent hot water supply, ideal for moderate usage scenarios. This model combines robust construction with user-friendly controls, delivering exceptional value without compromising on quality, thus appealing to a diverse range of users.



