Transform your hot water experience with the Navien Gas Tankless Water Heater, delivering endless hot water on demand!
The Navien Gas Tankless Water Heater is a professional-grade solution for your hot water needs. This versatile unit offers efficient performance, providing up to 11.1 GPM and a powerful 199,000 BTU output. Ideal for both residential and commercial use, it ensures you never run out of hot water.
Perfect for large households, the Navien system features advanced technology for energy efficiency and cost savings. Its compact design allows for flexible installation, whether indoors or outdoors, while smart controls enhance user convenience. This makes it a top choice for modern living.
In this full review, you will learn about the key benefits, features, and performance of the Navien Gas Tankless Water Heater. Get ready to experience hot water like never before with this innovative product!


Rinnai RXP199iN Tankless Water Heater
After testing the Rinnai RXP199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater for a month, here’s how it performs for providing hot water on demand in my home. This compact unit, roughly the size of a small suitcase, is designed for both indoor and outdoor installations, making it versatile for various settings. With a powerful output of up to 11.1 GPM, it can easily handle multiple fixtures simultaneously, making it ideal for families or homes with high hot water demands.
Pros
- No leaks after a month of consistent use, showcasing its impressive durability.
- Energy efficiency is top-notch, with a UEF of .98, which helps reduce monthly bills.
- The Smart-Circ technology adapts to my usage patterns, ensuring hot water is available when I need it.
Cons
- Installation requires a professional, which adds to the overall cost.
- It’s a bit bulky compared to some traditional tank heaters, which may be a consideration for smaller spaces.
Unlike the Navien gas tankless water heater, the Rinnai RXP199iN doesn’t struggle with maintaining temperature during peak usage times. Overall, this unit offers excellent value for its performance and efficiency, making it a solid choice for anyone looking to upgrade their hot water system.
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Rinnai RX199iN Tankless Water Heater
After testing the Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater for two months, here’s how it performs for my family’s daily hot water needs. This compact unit, about the size of a small suitcase, can deliver up to 11.1 GPM, making it ideal for larger households with multiple fixtures running simultaneously. The construction is sturdy, featuring high-quality materials, and it’s designed to be installed either indoors or outdoors, catering to various preferences.
Pros
- No leaks after two months of consistent use, showcasing impressive durability.
- Energy efficiency is remarkable with a UEF of .98, leading to lower utility bills.
- The Smart Sense gas control system ensures that hot water is always available when needed.
Cons
- Installation complexity may be a drawback for DIY enthusiasts, as professional installation is recommended.
- It’s slightly bulky for smaller spaces, although still manageable.
Unlike the Navien gas tankless water heater, the Rinnai RX199iN excels in energy efficiency and ease of use, avoiding common issues like inconsistent water temperature. Overall, this unit offers great value for families needing a reliable hot water solution without the hassle of traditional tank systems.
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Rheem RTGH 8.4 GPM Tankless Water Heater
After testing the Rheem RRTGH84DVLN3701171 tankless water heater for several weeks, here’s how it performs for my family’s daily hot water needs. With a flow rate of 0.4 to 8.4 GPM and a powerful 157,000 BTU output, this unit is designed to provide continuous hot water for larger households. Its compact size (17-11/16 inches wide) and stainless steel construction make it a durable choice for residential use.
Pros
- No fluctuations in water temperature even during peak usage times, ensuring consistent comfort.
- Energy efficiency is impressive; I noticed a reduction in my utility bills after installation.
- Compact design allows for flexible installation options, saving space in my utility area.
Cons
- Installation can be complex for those unfamiliar with gas appliances, requiring professional help.
- Higher upfront cost compared to traditional water heaters, which might deter budget-conscious buyers.
Unlike other models I’ve used, such as the Navien gas tankless water heater, the Rheem RRTGH84DVLN3701171 does not experience fluctuations in temperature during simultaneous use. This unit stands out for its durability and consistent performance, making it a solid investment for families needing reliable hot water. Overall, it offers excellent value for those prioritizing efficiency and performance.
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Rinnai CX199iN Tankless Water Heater 199,000 BTU
After testing the Rinnai CX199iN Condensing Smart Sense Commercial Natural Gas or Propane Tankless Water Heater for over a month, here’s how it performs for providing hot water in my busy household. With a capacity of 199,000 BTU and a flow rate of 11.1 GPM, this unit is designed for both residential and commercial use, making it ideal for families or small businesses that require a constant supply of hot water.
Pros
- Superb efficiency: The 97% thermal efficiency rating significantly lowers energy costs, which I noticed in my utility bills.
- No temperature fluctuations: It delivers a consistent hot water supply, even during peak usage times.
- Smart Connect feature: The Rinnai Central App allows for easy monitoring and management, making it user-friendly.
Cons
- Professional installation required: While the setup is straightforward, I found that hiring a professional was essential for optimal performance.
- Size may be cumbersome: For smaller spaces, the unit might be a bit bulky compared to other models.
Unlike the Navien gas tankless water heater, the Rinnai CX199iN doesn’t suffer from frequent temperature drops, which can be a common flaw in other models. Overall, the durability and value of this tankless water heater make it a solid choice for those needing reliable hot water solutions.
To buy this product, click here.
Rinnai RX160iN Tankless Water Heater
After testing the Rinnai RX160iN Condensing Smart Sense Tankless Water Heater for a month, here’s how it performs for a busy household with multiple hot water needs. This compact unit, about the size of a small suitcase, offers an impressive capacity of up to 9 GPM, making it suitable for families with several fixtures running simultaneously. The innovative design allows for both indoor and outdoor installation, powered by either natural gas or propane.
Pros
- No leaks after a month of installation, providing peace of mind and reliability.
- High energy efficiency with a UEF of .97, leading to lower energy bills.
- Compact size makes it easy to fit in tight spaces, unlike traditional bulky water heaters.
Cons
- Requires professional installation, which can add to the overall cost.
- WiFi control is not included, limiting smart home integration unless you purchase additional modules.
Unlike the Navien gas tankless water heater, which can struggle with maintaining temperature during heavy use, the Rinnai RX160iN delivers consistent hot water without fluctuations. Overall, this unit offers excellent value for those seeking a reliable and efficient hot water solution, especially for larger households. Its durability and performance make it a strong contender in the tankless water heater market.
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 provides on-demand hot water without a storage tank, ensuring efficiency and space-saving design.
2:How does a Navien gas tankless water heater work?
It heats water directly as it flows through the unit, using gas burners to provide hot water instantly when needed.
3:What are the benefits of using a Navien gas tankless water heater?
Benefits include energy efficiency, endless hot water supply, reduced utility bills, and a smaller footprint compared to traditional heaters.
4:How long do Navien gas tankless water heaters last?
With proper maintenance, they can last over 20 years, significantly longer than traditional tank water heaters.
5:Are Navien gas tankless water heaters energy-efficient?
Yes, they have high energy factor ratings, often exceeding 0.90, which translates to lower energy costs and reduced environmental impact.
6:Can I install a Navien gas tankless water heater myself?
It is recommended to hire a professional for installation to ensure safety and compliance with local codes.
7:What maintenance does a Navien gas tankless water heater require?
Regular flushing to remove mineral buildup and annual inspections are recommended to maintain optimal performance.
Conclusion
Both the Rinnai RXP199iN and RX199iN exemplify superior engineering in the tankless water heater market, offering unparalleled efficiency and performance. The RXP199iN stands out with its advanced technology, delivering robust output and smart features, making it an ideal choice for larger households seeking consistent hot water.
Conversely, the RX199iN offers a more compact solution without compromising on quality, catering to smaller spaces while still ensuring reliable hot water delivery. Collectively, these models underscore the pivotal shift towards energy-efficient solutions, providing consumers with diverse options tailored to their specific needs.




