Did you know that 80% of homeowners prefer the Rinnai tankless water heater for energy efficiency?
This trend highlights why the NEW Rinnai RXP199iN is a top choice, boasting an impressive 11.1 GPM flow rate while saving on energy costs.
Additionally, few realize that its smart recirculation technology not only provides instant hot water but also minimizes water waste, making it an eco-friendly option.
Our review explores the long-term value of Rinnai’s products compared to competitors.


Rinnai RXP199iN Tankless Water Heater
Rinnai RXP199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Provides up to 11.1 GPM (7 fixtures simultaneously) without running out of hot water.
- Smart-Circ technology learns usage patterns for optimal efficiency.
- High energy efficiency with a UEF of .98, reducing utility costs.
- Compact design allows for installation in small spaces, both indoors and outdoors.
- Quick Flush feature simplifies maintenance and upkeep.
Drawbacks
- Professional installation recommended, which may incur additional costs.
- No WiFi control module included, requiring separate purchase for smart home integration.
- No dishwasher-safe parts, limiting cleaning options.
This Rinnai tankless water heater is a practical pick for small spaces, providing efficient hot water on demand. Its smart features and compact size make it an excellent choice for homeowners looking to maximize utility without sacrificing comfort.
To buy this product, click here.
Rinnai RX180iN Tankless Water Heater
Rinnai RX180iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Provides up to 10 GPM, allowing simultaneous use of 6 fixtures without running out of hot water.
Drawbacks
- Professional installation recommended, which adds to initial costs and time.
The Rinnai RX180iN is a compact tankless water heater that is designed for both indoor and outdoor installation. Its advanced Smart Sense gas control system ensures efficient operation, whether powered by natural gas or propane. With a remarkable output of up to 10 gallons per minute, it can easily handle multiple hot water demands at once, making it ideal for larger households or busy environments.
One of the standout features is its high energy efficiency, boasting a UEF of .98. This means lower energy bills and a reduced carbon footprint. Additionally, the unit’s Quick Flush feature simplifies maintenance, ensuring longevity and reliable performance.
However, potential buyers should note that professional installation is highly recommended, which can be a drawback for those looking for a DIY solution. Furthermore, the unit does not come with a WiFi control module, which may limit smart home integration.
Overall, the Rinnai RX180iN is a practical pick for small spaces that require efficient and reliable hot water solutions.
To buy this product, click here.
Rinnai REP160iP Propane Tankless Water Heater
Rinnai REP160iP Smart-Circ Non-Condensing Propane Tankless Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Provides up to 6.6 GPM, suitable for 5 fixtures simultaneously.
Drawbacks
- Requires professional installation for optimal performance.
The Rinnai REP160iP is a compact tankless water heater designed for indoor use. Its Smart-Circ technology learns your hot water usage habits, scheduling recirculation to ensure you never run out of hot water. This feature not only enhances convenience but also promotes energy efficiency, making it a smart choice for homeowners.
With a maximum output of 6.6 gallons per minute, this unit can easily supply hot water to multiple fixtures at once, which is ideal for busy households. Its durable design allows it to fit in a variety of spaces, making it a versatile option for small homes or apartments.
However, it is important to note that this unit requires professional installation, which could add to the overall cost. Additionally, the lack of dishwasher-safe parts may be a concern for some users looking for easy maintenance.
This water heater is a practical pick for small spaces and those who value efficiency and reliability in their hot water supply.
To buy this product, click here.
Rinnai REP199iN Tankless Water Heater
Rinnai REP199iN Smart-Circ Non-Condensing Natural Gas Tankless Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Provides up to 7.9 GPM, supporting multiple fixtures simultaneously without running out of hot water.
Drawbacks
- Requires professional installation, which may add to overall costs.
The Rinnai REP199iN is a compact solution for those needing a reliable hot water source in small spaces. Its Smart-Circ technology adapts to your water usage patterns, ensuring energy efficiency while providing hot water on demand. The unit fits easily into tight areas, comparable to the size of a small suitcase, making it ideal for apartments or homes with limited installation options.
One of the standout features is its capacity to deliver up to 7.9 GPM, accommodating several fixtures at once without any drop in temperature. This ensures that you can run multiple showers or appliances simultaneously, a significant advantage for larger households. However, the requirement for professional installation can be a drawback for DIY enthusiasts, as it may increase your initial investment.
A practical pick for small spaces, the Rinnai REP199iN Smart-Circ offers a blend of efficiency and performance, making it a solid choice for those seeking a dependable tankless water heater.
To buy this product, click here.
Rinnai REP160iN Tankless Water Heater
Rinnai REP160iN Smart-Circ Non-Condensing Natural Gas Tankless Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Provides up to 6.6 GPM, supporting multiple fixtures simultaneously.
Drawbacks
- Professional installation recommended, which may increase initial costs.
The Rinnai REP160iN is a compact tankless water heater designed for efficient hot water delivery. With its Smart-Circ intelligent recirculation technology, it learns your water usage patterns, optimizing energy efficiency and ensuring you never run out of hot water. This model is ideal for homes with limited space, as it is about the size of a small suitcase yet still provides ample hot water for up to five fixtures at once.
One standout feature is its durability, backed by a 15-year guarantee for the heat exchanger and a 5-year warranty for parts. However, potential buyers should note that professional installation is recommended, which could add to the overall expense. Additionally, while it is designed for efficiency, the unit does not include WiFi control capabilities without the separate Controlr module.
This water heater is a practical pick for small spaces, offering an effective solution for those seeking a reliable, space-saving hot water system.
To buy this product, click here.
Faq about Rinnai Tankless Water Heater Circulation Pump:
1: What is a Rinnai tankless water heater circulation pump?
A Rinnai tankless water heater circulation pump is a device that enhances hot water delivery by keeping hot water circulating through the pipes, reducing wait time for hot water.
2: How does the circulation pump work?
The pump circulates hot water from the heater through the plumbing system, maintaining a supply of hot water at the tap without waiting.
3: What are the benefits of using a circulation pump?
Benefits include reduced water waste, quicker access to hot water, and improved energy efficiency by minimizing heat loss in the pipes.
4: Can I install a circulation pump myself?
While some homeowners may install it themselves, professional installation is recommended for optimal performance and to avoid plumbing issues.
5: Is the circulation pump compatible with all Rinnai models?
Most Rinnai tankless water heaters are compatible with circulation pumps, but it’s best to check the specific model requirements before purchasing.
6: How much energy does the circulation pump use?
The energy consumption varies by model, but most pumps are designed to be energy-efficient, typically using minimal electricity.
Conclusion
The Rinnai RXP199iN Tankless Water Heater exemplifies cutting-edge efficiency, delivering an impressive output while conserving energy, making it ideal for larger households. Its advanced technology ensures a continuous supply of hot water, catering to modern demands with remarkable reliability.
Conversely, the Rinnai RX180iN Tankless Water Heater offers a more compact solution without compromising performance, perfect for smaller spaces. Its user-friendly interface and robust design ensure seamless operation, appealing to those seeking practicality and dependability in their hot water solutions.



