tankless water heater with recirculating pump – which one truly excels?

Transform your home’s hot water supply with a tankless water heater featuring a recirculating pump for instant comfort.

When it comes to efficient hot water solutions, the Rinnai RXP199iN and Rheem IKONIC RECTGH-SR11iN stand out. These models offer impressive flow rates, ensuring you have hot water when you need it. The Rinnai RXP199iN provides up to 11.1 GPM, while the Rheem IKONIC delivers 11.2 GPM, making them perfect for large households.

Versatile and user-friendly, these tankless water heaters come with built-in recirculation pumps, which minimize wait times for hot water. Additionally, their energy-efficient design significantly reduces utility bills, making them ideal for eco-conscious consumers.

In this full review, we will dive deeper into the features, benefits, and comparisons of these top tankless water heaters. You’ll learn how they can enhance your home’s efficiency and comfort while saving you money.

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tankless water heater with recirculating pump

Rinnai RXP199iN Tankless Water Heater

#1 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

The adjustable valve sets the Rinnai RXP199iN Condensing Smart Sense Tankless Water Heater apart from competitors. This innovative feature allows users to customize the water flow and temperature, ensuring optimal performance tailored to individual needs. Constructed from 316-grade stainless steel, it resists corrosion, enhancing durability and longevity. With compact dimensions of approximately 24 x 18 x 10 inches, it fits easily into tight spaces, making it ideal for various installations.

Key Advantages

  • The Smart-Circ Intelligent Recirculation technology learns water usage patterns, optimizing energy efficiency with a UEF of .98.
  • Capable of delivering up to 11.1 GPM, this unit supports multiple fixtures simultaneously, ensuring you never run out of hot water.
  • Versatile installation options allow for both indoor and outdoor setups, accommodating diverse preferences and requirements.

Limitations

  • Not compatible with traditional venting systems, requiring the RX-OVC vent cap for outdoor installations.
  • Professional installation is recommended, which may incur additional costs.

Best for outdoor enthusiasts needing a reliable and efficient hot water solution, the Rinnai RXP199iN is an excellent choice for those seeking modern technology and performance in a compact design.

To buy this product, click here.

Rheem IKONIC Super High Efficiency Tankless Water Heater

#2 CHOICE

Rheem IKONIC RECTGH-SR11iN Professional Grade Super High Efficiency Condensing Tankless Natural Gas Water Heater with Recirculation, 11.2 GPM

The adjustable valve sets the Rheem IKONIC RECTGH-SR11iN apart in the realm of tankless water heaters. Constructed with 316-grade stainless steel, it ensures durability and resistance to corrosion, making it ideal for long-term use. With dimensions of 18.25 x 14.75 x 26.5 inches, this compact unit easily fits into various installation spaces while providing a robust output of 11.2 GPM.

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Key Advantages

  • The customizable built-in recirculation system saves an average of 11,000 gallons of water annually, significantly reducing energy costs and wait times for hot water.

Limitations

  • Not compatible with traditional tank water heaters, which may require additional modifications during installation.

Best for outdoor enthusiasts needing continuous hot water for multiple applications, the Rheem IKONIC RECTGH-SR11iN excels in efficiency and convenience. Its built-in EcoNet Wi-Fi technology allows users to customize settings, track usage, and receive maintenance alerts via mobile devices, enhancing the overall user experience. With hot-start programming, it ensures that hot water is readily available between uses, eliminating cold bursts. This product is an excellent choice for anyone looking to upgrade their home’s hot water system while maximizing efficiency and minimizing waste.

To buy this product, click here.

Rinnai REP199iN Tankless Water Heater

#3 CHOICE

Rinnai REP199iN Smart-Circ Non-Condensing Natural Gas Tankless Water Heater with Built-In Recirculation Pump, Up to 7.9 GPM, Indoor Installation, 199,000 BTU

The Smart-Circ Intelligent Recirculation feature sets the Rinnai REP199iN Smart-Circ Non-Condensing Natural Gas Tankless Water Heater apart from its competitors. This innovative technology learns your water usage patterns, optimizing the pump and recirculation schedules for enhanced energy efficiency and convenience. Constructed from 316-grade stainless steel, this unit is designed to resist corrosion, ensuring longevity. It measures a compact size, comparable to a small suitcase, while delivering an impressive output of up to 7.9 GPM, sufficient for multiple fixtures simultaneously.

Key Advantages

  • The built-in recirculation pump minimizes wait time for hot water, enhancing user satisfaction.

Limitations

  • Not compatible with certain existing plumbing setups, requiring professional installation.

Best for outdoor enthusiasts needing a reliable and efficient hot water solution, the Rinnai REP199iN is ideal for those who value both performance and compact design. Its advanced technology and durable materials make it a standout choice for anyone looking to upgrade their water heating system.

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To buy this product, click here.

Rheem Prestige Tankless Gas Water Heater

#4 CHOICE

Rheem Prestige Condensing Tankless Gas Indoor Natural Gas Water Heater With Built-in Recirculation 11.0 GPM - RTGH-RH11DVLN

The adjustable valve sets the Rheem Prestige Condensing Tankless Gas Indoor Natural Gas Water Heater apart from competitors. This innovative feature allows users to customize water flow and temperature, ensuring optimal performance. Constructed from 316-grade stainless steel, this unit resists corrosion and enhances durability. With dimensions of 18.5 x 26 x 12 inches, it boasts a compact design that makes it ideal for space-constrained installations, particularly as a tank replacement. It delivers an impressive flow rate of 11.0 GPM, ensuring hot water is readily available.

Key Advantages

  • The high energy efficiency of this unit significantly reduces operating costs, making it a cost-effective choice for long-term use.
  • Its built-in recirculation system minimizes wait times for hot water, enhancing user convenience.
  • Water and gas leak detection features provide an added layer of safety, automatically shutting down the unit and displaying error codes when necessary.
  • The auto-learn programming function adapts to users’ hot water needs, optimizing performance during peak times.

Limitations

  • Not compatible with certain older plumbing systems, which may require additional modifications.
  • Installation may require professional assistance due to gas line connections.

Best for outdoor enthusiasts needing reliable hot water solutions without the bulk of traditional tanks, the Rheem Prestige is a top-tier choice for efficiency and performance.

To buy this product, click here.

Rinnai RX180iN Tankless Water Heater

#5 CHOICE

NEW Rinnai RX180iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 10 GPM, 180,000 BTU

The adjustable valve sets the Rinnai RX180iN Condensing Smart Sense Tankless Water Heater apart from its competitors. Engineered for both indoor and outdoor use, this unit is compact, measuring just 13.8 x 18.5 x 26.1 inches and constructed from 316-grade stainless steel, ensuring durability and resistance to corrosion. With a staggering output of up to 10 GPM and a heating capacity of 180,000 BTU, it can efficiently supply hot water for up to six fixtures simultaneously.

Key Advantages

  • The Smart Sense gas control system optimizes energy usage, providing a UEF of .98 for high efficiency.

Limitations

  • Not compatible with certain existing venting systems, requiring the RX-OVC vent cap for outdoor installations.
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Best for outdoor enthusiasts needing a reliable hot water solution for camping, RVs, or remote cabins, the Rinnai RX180iN is ideal for those who prioritize efficiency and versatility in their water heating solutions. Its modern design and user-friendly interface further enhance its appeal, making it a top choice for homeowners and professionals alike.

To buy this product, click here.

Faq about Tankless Water Heater with Recirculating Pump:

1: What is a tankless water heater with a recirculating pump?

A tankless water heater with a recirculating pump heats water on demand and provides instant hot water throughout your home by continuously circulating water in the plumbing system.

2: How does a recirculating pump work?

The recirculating pump moves hot water from the heater through the pipes back to the heater, ensuring that hot water is readily available at the tap without waiting.

3: What are the benefits of using a tankless water heater with a recirculating pump?

Benefits include energy efficiency, reduced water waste, and immediate access to hot water, enhancing convenience in daily use.

4: Are there any downsides to this system?

Potential downsides include higher initial installation costs and the need for proper sizing to ensure optimal performance.

5: How can I maintain my tankless water heater with a recirculating pump?

Regular maintenance includes descaling the unit, checking filters, and ensuring the pump operates efficiently to prolong its lifespan.

6: Is professional installation recommended?

Yes, professional installation is recommended to ensure proper setup and compliance with local codes and regulations.

Conclusion

Rinnai RXP199iN exemplifies cutting-edge technology, offering unparalleled efficiency and performance, making it a premier choice for those seeking instant hot water with minimal energy expenditure. Its sophisticated design and robust features ensure reliability and longevity, catering to modern demands.

Conversely, the Rheem IKONIC stands out with its super high efficiency, delivering exceptional water heating capabilities while prioritizing user convenience and sustainability. Its innovative recirculating pump enhances accessibility, ensuring a seamless experience in daily routines. Together, these products redefine expectations in water heating solutions.

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