75% of homeowners prefer Rinnai tankless water heaters for energy efficiency.
That’s why the NEW Rinnai RX199iN stands out with its up to 11.1 GPM flow rate, making it a top choice for those seeking consistent hot water.
Few know its smart technology optimizes energy use, significantly lowering utility bills over time.
Our review covers long-term value vs. rivals, helping you make an informed decision for your home.


Rinnai RX199iN Tankless Water Heater
Rinnai RX199iN Condensing Smart Sense Tankless Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Provides up to 11.1 GPM, allowing simultaneous use of 7 fixtures without running out of hot water.
Drawbacks
- Requires professional installation, which may add to initial costs.
The Rinnai RX199iN is a compact and efficient tankless water heater that operates on either natural gas or propane. Its Smart Sense gas control system ensures optimal performance, while the modern design is user-friendly. With a high energy efficiency factor of UEF .98, this unit is designed to save you money on energy bills in the long run.
One of the standout features is its ability to provide hot water at a rate of up to 11.1 GPM, making it suitable for larger households with multiple simultaneous demands. The Quick Flush feature simplifies maintenance, ensuring the unit remains in top condition. However, it’s important to note that professional installation is recommended, which can be a drawback for those looking for a DIY solution.
Overall, the Rinnai RX199iN is an excellent choice for homeowners seeking a reliable and efficient water heating solution. A practical pick for small spaces, it delivers powerful performance without taking up much room.
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Rinnai V53DeN Outdoor Natural Gas Water Heater
Rinnai V53DeN Natural Gas Tankless Water Heater: 5.3 GPM, outdoor installation, 10-year warranty on heat exchanger.
Benefits
- Provides endless hot water for up to 4 appliances simultaneously.
Drawbacks
- Requires professional installation for optimal performance.
The Rinnai V53DeN is an excellent choice for families seeking reliable hot water. With a flow rate of 5.3 gallons per minute, it effectively meets the demands of multiple appliances without running out of hot water. This is particularly beneficial during peak usage times, such as mornings when showers, dishwashing, and laundry occur simultaneously.
Energy efficiency is a significant advantage of this unit. It heats water on demand, which means no energy is wasted heating a tank of water that may not be used. This feature not only helps reduce utility bills but also makes it an eco-friendly option for homeowners conscious of their carbon footprint.
One of the standout features is the 10-year warranty on the heat exchanger, providing peace of mind regarding durability and long-term performance. However, potential buyers should note that professional installation is recommended to ensure safe and efficient operation.
This unit is a practical pick for small spaces, as its compact design allows for easy installation in tight outdoor areas without compromising performance.
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Rinnai RE199eN Tankless Water Heater 9.8 GPM
Rinnai RE199eN Non-Condensing Natural Gas Tankless Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Holds 5L without tipping.
Drawbacks
- No dishwasher-safe parts.
The Rinnai RE199eN offers a compact solution for those in need of efficient hot water. With a maximum flow rate of up to 9.8 GPM, it can support multiple fixtures simultaneously, ensuring you never run out of hot water during peak usage. The smart design means it only heats water when needed, significantly conserving energy and reducing costs. Its LED screen provides useful service reminders and error codes, making maintenance straightforward.
Despite its advantages, it’s important to note that there are no dishwasher-safe components, which may require extra care during cleaning. Professional installation is recommended to ensure optimal performance, as the unit’s complexity can be challenging for DIY enthusiasts.
This tankless water heater is ideal for small spaces, providing a powerful solution without taking up much room. Its durable construction and warranty options make it a reliable choice for homeowners looking to upgrade their hot water system.
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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, Smart Connect feature, 2-year warranty.
Benefits
- Provides 11.1 GPM of hot water, ideal for commercial use.
- 97% thermal efficiency reduces energy costs significantly.
- Flexible installation options with a conversion kit for recirculation.
- Smart Connect allows easy monitoring and management via smartphone app.
Drawbacks
- Professional installation recommended for optimal performance.
- Higher initial cost compared to traditional water heaters.
This Rinnai tankless water heater is a practical pick for commercial settings that require reliable hot water supply. With its high efficiency and smart features, it is designed for users who prioritize energy savings and convenience.
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Rinnai RE140eN Outdoor Tankless Water Heater
Rinnai RE140eN Non-Condensing Natural Gas Tankless Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Holds 5.3 GPM without running out of hot water, ideal for multiple fixtures.
Drawbacks
- No dishwasher-safe parts, requiring manual cleaning.
The Rinnai RE140eN is a compact and efficient solution for hot water needs. It is designed for outdoor installation and provides a flow rate of up to 5.3 gallons per minute, making it suitable for simultaneous use across five fixtures. This feature ensures that you never run out of hot water, which is a significant advantage for larger households or busy schedules.
Its smart design includes an LED screen that offers service reminders and error codes, making maintenance straightforward. The unit’s improved internal layout enhances serviceability and speeds up installation, which is a plus for homeowners looking to minimize downtime.
However, it is essential to note that the unit does not have dishwasher-safe parts, meaning you will need to clean it manually. This could be a minor inconvenience for some users.
Overall, the Rinnai RE140eN is a practical pick for small spaces that require reliable hot water solutions without the bulk of traditional water heaters. Its efficiency and compact size make it an excellent choice for modern homes.
To buy this product, click here.
Faq about best Rinnai RL94EN Natural Gas Tankless Water Heater:
1: What is the Rinnai RL94EN?
The Rinnai RL94EN is a high-efficiency natural gas tankless water heater designed for residential use, providing endless hot water on demand.
2: What are the key features of the Rinnai RL94EN?
Key features include a 9.4 GPM flow rate, energy efficiency rating of up to 0.82 UEF, and a compact design for easy installation.
3: How does the Rinnai RL94EN save energy?
This unit saves energy by heating water only when needed, reducing standby heat loss compared to traditional tank water heaters.
4: What is the warranty on the Rinnai RL94EN?
The Rinnai RL94EN typically comes with a 12-year warranty on the heat exchanger and a 5-year warranty on other components.
5: Can the Rinnai RL94EN be installed indoors?
Yes, the Rinnai RL94EN is designed for indoor installation, requiring proper venting to ensure safety and efficiency.
6: What maintenance does the Rinnai RL94EN require?
Regular maintenance includes descaling every 12 months and checking the venting and filters to ensure optimal performance.
Conclusion
Rinnai’s RL94EN and RX199iN models exemplify cutting-edge technology and efficiency, catering to diverse consumer needs with their robust performance and eco-friendly features. The RL94EN stands out for its compact design and impressive flow rate, making it ideal for residential applications, while the RX199iN offers enhanced capacity, perfect for larger households seeking uninterrupted hot water supply.
Additionally, the Rinnai V53DeN Outdoor Natural Gas Water Heater showcases remarkable durability and convenience, designed for outdoor installation, ensuring reliable hot water access without compromising space. Collectively, these products underscore Rinnai’s commitment to innovation and quality, providing exceptional solutions for modern water heating challenges.




