The Rinnai Tankless Water Heater offers unmatched efficiency and convenience. With models like the Rinnai RX199iN, you enjoy endless hot water with a remarkable flow rate of up to 11.1 GPM. This heater is ideal for both indoor and outdoor installations, ensuring flexibility and reliability.
Whether you’re looking for a high-efficiency option like the Rinnai CX199iN or a non-condensing model like the Rinnai RE199eN, each offers unique features tailored to your needs. These heaters are perfect for families, providing consistent hot water for multiple uses simultaneously.
In this review, we’ll dive deeper into the benefits and features of each model. You’ll learn how the Rinnai Tankless Water Heater can enhance your daily life and save you money.



Rinnai RX199iN Tankless Water Heater
The Rinnai RX199iN Condensing Smart Sense Tankless Water Heater is designed to provide endless hot water, making it ideal for homeowners seeking efficiency and reliability. Suitable for both indoor and outdoor installations, this compact unit measures just the size of a small suitcase, yet delivers an impressive flow rate of up to 11.1 GPM, accommodating multiple fixtures simultaneously. Its dual fuel capability allows it to operate on either natural gas or propane, ensuring versatility in various setups.
This tankless water heater effectively solves the problem of running out of hot water, enhancing the user experience with its smart, efficient design. The modern interface and Quick Flush feature simplify maintenance, while its high energy efficiency rating of UEF .98 ensures lower energy bills.
Pros
- Compact and space-saving design.
- Delivers hot water on demand, ideal for large households.
- High energy efficiency reduces utility costs.
- Dual fuel capability for versatile installation options.
- Easy-to-use interface simplifies operation and maintenance.
Cons
- Professional installation is recommended, adding to initial costs.
- WiFi control module sold separately.
- Requires specific venting for outdoor installation.
The Rinnai RX199iN stands out for its reliability and performance, making it perfect for families or anyone with high hot water demands. While it does require professional installation, the long-term benefits of efficiency and convenience make it a worthwhile investment for any home.
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Rinnai RE199eN Outdoor Natural Gas Water Heater
The Rinnai RE199eN Non-Condensing Natural Gas Tankless Water Heater is designed to provide endless hot water for residential use, making it ideal for families or households with high hot water demands. With a compact size comparable to a small suitcase, this unit offers an impressive output of up to 9.8 GPM, allowing multiple fixtures to operate simultaneously without running out of hot water.
Key specifications include a heating capacity of 199,000 BTU and an outdoor installation design that enhances space efficiency. Made from durable materials, this water heater is built to last and features an improved internal layout for easier maintenance. The integrated LED screen provides service reminders and error codes for user convenience.
Pros:
- Provides continuous hot water for multiple fixtures.
- Energy-efficient design, only heats water as needed.
- Compact size saves space compared to traditional tank heaters.
- Durable construction with a solid warranty (15 years for heat exchanger).
Cons:
- Professional installation is recommended, adding to overall costs.
- WiFi control is available but requires separate purchase of the Controlr module.
In real-world use, the Rinnai RE199eN excels in delivering reliable hot water, making it particularly suitable for larger families or homes with multiple bathrooms. While the need for professional installation may deter some users, the long-term benefits of energy savings and convenience greatly outweigh this drawback. Overall, this tankless water heater is an excellent investment for those seeking efficiency and reliability in their hot water supply.
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Rinnai CX199iN High Efficiency Tankless Water Heater
The Rinnai CX199iN High Efficiency Plus Natural Gas Interior Tankless Water Heater is designed to provide an endless supply of hot water, ideal for homeowners seeking efficient heating solutions. This model is perfect for medium to large households, offering up to 11 gallons per minute. With a sleek design available in a modern finish, it fits seamlessly into any home environment.
One of the standout features of the Rinnai CX199iN is its remarkable thermal efficiency rating of 97%, which significantly reduces energy costs. Its installation flexibility allows for indoor or outdoor setups, thanks to the innovative Versa Vent system. This water heater not only enhances hot water management but also offers a Smart Connect feature for effortless monitoring via the Rinnai Central App.
Pros
- High efficiency reduces energy bills.
- Flexible installation options for various home layouts.
- Smart Connect feature for easy management and monitoring.
- User-friendly maintenance with a quick flush system.
Cons
- Professional installation is recommended, adding to initial costs.
- Requires a specific vent cap for outdoor installation.
In real-world use, the Rinnai CX199iN excels in providing consistent hot water, making it ideal for families with high demand. While it may have a higher upfront cost compared to traditional heaters, the long-term savings on energy bills make it a worthwhile investment. This model is best suited for those prioritizing efficiency and modern technology in their home heating solutions.
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Rinnai RU199iN Tankless Hot Water Heater
Rinnai RU199iN Condensing Tankless Hot Water Heater is designed to provide endless hot water for residential use, ideal for homeowners seeking efficiency and convenience. Its compact size (approximately 18 x 26 x 10 inches) and sleek design allow for easy indoor installation without taking up valuable space. Made from durable materials, this natural gas heater delivers a remarkable flow rate of up to 11 GPM, ensuring that multiple appliances can be used simultaneously without a drop in water pressure.
This tankless water heater solves the common problem of running out of hot water during peak usage times, making it perfect for families or households with high hot water demands. The integration of Circ-Logic technology allows for efficient recirculation, minimizing wait times for hot water.
Pros
- Endless hot water supply for whole-home usage.
- Energy-efficient design saves on utility bills.
- Can support multiple appliances simultaneously.
- Compact size maximizes space efficiency.
- Built to last with robust warranties on parts and labor.
Cons
- Professional installation is recommended, which may incur additional costs.
- Initial investment can be higher compared to traditional water heaters.
- Requires natural gas availability.
The Rinnai RU199iN stands out with its reliable performance and energy-saving capabilities, making it a valuable addition to any home. Best suited for families or individuals with high hot water needs, this heater ensures a consistent and powerful supply of hot water while being mindful of energy consumption. While it may require a higher upfront cost and professional installation, the long-term savings and convenience it offers make it a worthwhile investment.
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Rinnai V53DeP Outdoor Propane Water Heater
The Rinnai V53DeP Propane Tankless Water Heater is designed to provide endless hot water for busy households, making it ideal for families and individuals who require a reliable hot water supply. With a flow rate of 5.3 GPM, this outdoor installation unit efficiently delivers hot water to multiple appliances simultaneously. Its compact design allows for installation in tight spaces, ensuring optimal use of your home’s layout.
This tankless water heater solves the problem of running out of hot water during peak usage times, enhancing the user experience by providing consistent hot water on demand. The unit’s energy-efficient performance conserves energy by only heating water when necessary, which can lead to lower utility bills over time.
Pros
- Endless hot water supply for multiple appliances.
- Energy-efficient design reduces monthly bills.
- Compact size fits well in tight spaces.
- Long-lasting with improved scale detection features.
- Robust warranty offers peace of mind.
Cons
- Professional installation is recommended, increasing initial costs.
- Outdoor installation may not suit all homes.
In real-world usability, the Rinnai V53DeP excels in providing hot water for showers, dishwashing, and laundry without interruption. It is best suited for medium to large households looking for a reliable and efficient solution. While the need for professional installation may be a drawback for some, the investment pays off in long-term energy savings and performance. Overall, this product is perfect for those seeking a dependable hot water solution.
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Faq about Best Rinnai Tankless Water Heater RUR199EN:
1: What is the Rinnai RUR199EN?
The Rinnai RUR199EN is a high-efficiency tankless water heater designed for residential use, providing endless hot water on demand.
2: What are the key features of the RUR199EN?
It features a 199,000 BTU maximum input, Wi-Fi capability, and a compact design, making it ideal for various home sizes.
3: How energy efficient is the RUR199EN?
The RUR199EN has an energy factor of 0.96, ensuring significant energy savings and lower utility bills.
4: Can the RUR199EN provide enough hot water for a large household?
Yes, it can supply hot water for multiple fixtures simultaneously, making it suitable for large households with high demand.
5: What are the installation requirements for the RUR199EN?
It requires a 3/4-inch gas line and proper venting, typically using PVC or stainless steel materials for venting.
6: Is the RUR199EN easy to maintain?
Yes, regular maintenance includes descaling and checking filters, which can be done by homeowners or professionals.
7: What warranty does the RUR199EN come with?
The Rinnai RUR199EN comes with a 12-year warranty on the heat exchanger and a 5-year warranty on parts.
Conclusion
Rinnai’s RUR199EN exemplifies cutting-edge technology, offering unparalleled efficiency and on-demand hot water, making it an ideal choice for modern households. Its advanced features ensure optimal performance while minimizing energy consumption.
Conversely, the Rinnai RX199iN stands out for its compact design and robust capabilities, catering to diverse installation needs without compromising on reliability. Both products epitomize excellence in tankless water heating, delivering exceptional value and convenience for discerning consumers.