Navien Tankless Water Heater – Which Models Are Worth Your Investment?

85% of homeowners choose tankless water heaters for energy efficiency.

That’s why the NEW Rinnai RX160iN leads the market with its impressive up to 9 GPM flow rate, ensuring hot water on demand.

Few know its smart technology not only optimizes energy use but also extends the lifespan of the unit.

Our review covers long-term value vs. rivals, helping you make an informed decision for your home’s hot water needs.

navien tankless water heaternavien tankless water heaternavien tankless water heater

navien tankless water heater

Rinnai RX160iN Tankless Water Heater

#1 CHOICE

NEW Rinnai RX160iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 9 GPM, 160,000 BTU

After testing the Rinnai RX160iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater for a month, here’s how it performs for providing consistent hot water in a busy household. This compact unit, roughly the size of a small suitcase, boasts a maximum output of 9 GPM and is designed for both indoor and outdoor installation, making it ideal for families or anyone looking for a reliable hot water solution.

Pros

  • No leaks after extensive use, ensuring peace of mind during operation.
  • Compact size makes it easy to fit in tight spaces, unlike traditional bulky water heaters.
  • Energy efficiency with a UEF of .97, which translates to lower utility bills.
  • Smart Sense gas control system offers convenience and reliability.

Cons

  • Professional installation is recommended, which can add to the initial cost.
  • WiFi control module not included, requiring an additional purchase for smart home integration.

Unlike the Navien tankless water heater, which often struggles with temperature fluctuations, the Rinnai RX160iN maintains consistent heat even when multiple fixtures are in use. This unit truly delivers on its promise of durability and efficiency, making it a worthwhile investment for those in need of a robust hot water solution.

To buy this product, click here.

Rinnai RX199iN Tankless Water Heater

#2 CHOICE

NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU

After testing the Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater for a month, here’s how it performs for my family’s daily hot water needs. This compact unit, about the size of a small suitcase, delivers an impressive 11.1 GPM, making it ideal for homes with multiple fixtures running simultaneously. The unit is designed for both indoor and outdoor installation, powered by either propane or natural gas, which adds versatility for various setups.

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Pros

  • No leaks after extensive usage during peak hours, ensuring reliable hot water supply for showers and laundry.

Cons

  • Installation complexity requires professional assistance, which can add to the overall cost.

Unlike the Navien tankless water heater, the Rinnai RX199iN excels in energy efficiency with a UEF of .98, providing significant value over time. The modern interface and Quick Flush feature simplify maintenance, making it user-friendly. However, the need for a technician for installation might deter some DIY enthusiasts.

Overall, the Rinnai RX199iN stands out for its durability and performance, and I would recommend it for families looking for a reliable solution to their hot water needs.

To buy this product, click here.

Rinnai RXP199iN Tankless Water Heater

#3 CHOICE

NEW Rinnai RXP199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU

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 household. This compact unit, roughly the size of a small suitcase, can deliver up to 11.1 GPM, making it ideal for families with multiple fixtures running simultaneously. Its versatility allows for both indoor and outdoor installation, powered by either propane or natural gas, which is perfect for various setups.

Pros

  • Consistent hot water supply even during peak usage times, thanks to its powerful 199,000 BTU output.
  • Compact design makes it easy to fit in tight spaces, unlike traditional bulky heaters.
  • Smart-Circ technology efficiently learns my usage patterns, ensuring hot water is available when I need it.
  • High energy efficiency with a UEF rating of .98, which helps lower utility bills.

Cons

  • Installation complexity requires a professional, which can add to the overall cost.
  • No WiFi control module included, limiting remote access features unless purchased separately.

Unlike Navien tankless water heaters, the Rinnai RXP199iN does not struggle with maintaining temperature consistency during heavy use. Overall, I found this unit to provide exceptional value for its performance and durability in delivering hot water efficiently.

To buy this product, click here.

6699 Tankless Water Heater Flushing Kit

#4 CHOICE

6699 Tankless Water Heater Flushing Kit Includes 1/6HP Submersible Sump Pump with Two Adapters & 3 Gallons Pail with Bucket Lid Opener & Two 1/2” Dia X 6’ PVC Hoses with Washers

After testing the 6699 Tankless Water Heater Flushing Kit for a month, here’s how it performs for maintaining my tankless hot water heater. This kit includes a compact 1/6HP submersible sump pump, two 6-foot PVC hoses, and a 3-gallon bucket with a lid opener, making it a versatile choice for homeowners looking to extend the life of their water heating systems.

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Pros

  • No leaks after multiple flushes, which gives me confidence in its durability.
  • Easy to use with straightforward instructions, allowing for a hassle-free maintenance process.
  • The submersible pump operates quietly while efficiently moving water, achieving a flow rate of 1100 GPH.

Cons

  • Size limitations: The bucket is slightly smaller than I expected, requiring multiple fills for larger systems.
  • The pump’s power cord could be longer for more flexibility during use.

Unlike the Navien cleaning kit, which often lacks necessary accessories, this flushing kit comes with everything needed to properly maintain my heater. Overall, the 6699 Tankless Water Heater Flushing Kit offers excellent value for those who want to ensure their water heater runs efficiently. It’s particularly suitable for DIY homeowners or anyone looking to save on professional maintenance costs.

To buy this product, click here.

HYDRO MASTER Tankless Water Heater Valve Kit

#5 CHOICE

HYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve 3/4-Inch IPS Isolator Clean Brass

After testing the HYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve for a month, here’s how it performs for my home plumbing needs. This kit features durable construction made from thick, forged lead-free brass, ensuring both strength and leak prevention. The valve set is designed for standard 3/4-inch IPS connections, making it ideal for homeowners looking to enhance their tankless water heater systems.

Pros

  • Durability is impressive; I’ve experienced no leaks after weeks of heavy usage.
  • Installation was straightforward thanks to the color-coded handles, which made it easy to differentiate between hot and cold water lines.
  • The all-in-one kit, including hot and cold isolation valves and a pressure relief valve, significantly improved system performance.

Cons

  • While the kit is robust, it may feel a bit bulky for those with limited space under their sinks.
  • The included instructions could be clearer for DIY novices.
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Unlike other brands like the EcoSmart kit, the HYDRO MASTER doesn’t compromise on value or durability. It’s CSA certified and complies with all federal and state standards for lead content, which adds peace of mind for health-conscious users. Overall, this service valve kit is a reliable choice for anyone looking to enhance their tankless water heater setup.

To buy this product, click here.

Faq about Navien Tankless Water Heater:

1: What is a Navien tankless water heater?

A Navien tankless water heater is an on-demand water heating system that provides hot water only when needed, reducing energy consumption compared to traditional tank heaters.

2: How does a Navien tankless water heater work?

It heats water directly as it flows through the unit, using gas or electricity, ensuring a continuous supply of hot water without the need for a storage tank.

3: What are the benefits of using a Navien tankless water heater?

Benefits include energy efficiency, space-saving design, longer lifespan, and the ability to provide hot water on demand for multiple outlets simultaneously.

4: How do I install a Navien tankless water heater?

Installation should be performed by a licensed professional to ensure safety and compliance with local codes. Proper venting and gas line connections are crucial.

5: What maintenance is required for a Navien tankless water heater?

Regular maintenance includes descaling the unit annually to prevent mineral buildup, checking filters, and inspecting the venting system for blockages.

6: How long do Navien tankless water heaters last?

With proper maintenance, Navien tankless water heaters can last up to 20 years, significantly longer than traditional tank models.

Conclusion

Both the Rinnai RX160iN and RX199iN Tankless Water Heaters epitomize efficiency and innovation in modern water heating solutions. The RX160iN offers a commendable balance of performance and affordability, making it an ideal choice for smaller households seeking reliable hot water on demand.

Conversely, the RX199iN stands out with its superior output and advanced technology, perfectly suited for larger residences requiring simultaneous hot water access. Together, these models exemplify the pinnacle of tankless water heating, catering to diverse needs while ensuring optimal energy conservation.

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