Condensing Propane Tankless Water Heater – Which One Will Surprise You?

Struggling with hot water shortages? The Rinnai tankless water heaters fix it in minutes.

Rinnai’s **RE140iP** is perfect for *reliable indoor hot water needs*, delivering up to 5.3 GPM for your home.

Plus, its compact design saves valuable space, making it ideal for smaller installations.

We tested durability, ease of use, and more to ensure you get the best performance.

Rinnai RE140iP Propane Tankless Water Heater

The adjustable valve sets the Rinnai RE140iP Non-Condensing Propane Tankless Water Heater apart from its competitors. This innovative feature allows users to fine-tune water temperature and flow rates, ensuring optimal performance tailored to specific needs. Constructed from 316-grade stainless steel, the unit is designed to resist corrosion, enhancing durability and lifespan. With dimensions of 14.5 x 18.5 x 26 inches, it is compact enough to fit in tight spaces, making it an excellent choice for various indoor installations.

Key Advantages

• The unit delivers an impressive output of up to 5.3 GPM, capable of supporting five fixtures simultaneously, ensuring that hot water is never in short supply.

Limitations

• It is not compatible with certain older plumbing systems, which may require additional modifications for installation.

Overall, the Rinnai RE140iP is best for outdoor enthusiasts needing a reliable, energy-efficient hot water solution that can handle multiple demands without compromising on performance. Its smart design and advanced features cater to both residential and light commercial applications, making it a standout option in the tankless water heater market.

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Rinnai RX199iN Tankless Water Heater

The adjustable valve sets the Rinnai RX199iN Condensing Smart Sense Tankless Water Heater apart from its competitors. This unit is designed for both indoor and outdoor installation, powered by either natural gas or propane, and boasts a maximum output of 199,000 BTU. Its compact dimensions of approximately 14 x 24 x 8 inches make it ideal for space-constrained environments.

Key Advantages

• The use of 316-grade stainless steel resists corrosion, ensuring durability and longevity.

Limitations

• Not compatible with certain older plumbing systems, which may require additional modifications for optimal performance.

This tankless water heater can deliver up to 11.1 GPM, sufficient for simultaneous use across seven fixtures, making it an excellent choice for large households. The modern design includes an easy-to-use interface and a Quick Flush feature, enhancing maintenance efficiency. Its impressive energy efficiency factor of UEF .98 contributes to lower utility bills.

Best for outdoor enthusiasts needing a reliable hot water supply in remote locations or compact urban settings, the Rinnai RX199iN is a high-performing solution for those who prioritize efficiency and space-saving design. Professional installation is recommended to ensure optimal performance and safety.

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Rinnai RE160eP Propane Tankless Water Heater

The adjustable valve sets the Rinnai RE160eP Non-Condensing Propane Tankless Water Heater apart from competitors. This compact unit measures 13.8 x 18.5 x 28.3 inches and weighs approximately 37 pounds, making it ideal for outdoor installations where space is limited. Constructed from 316-grade stainless steel, it resists corrosion and enhances durability, ensuring longevity even in harsh environments. With a powerful output of 160,000 BTU, it delivers up to 6.1 GPM, efficiently supplying hot water for up to five fixtures simultaneously.

Key Advantages

• The improved design allows for quicker installation and enhanced serviceability, thanks to a cleaner internal layout. The integrated LED screen provides service reminders and error codes, simplifying maintenance.

Limitations

• Not compatible with WiFi control unless the Controlr module is purchased separately, which may limit remote operation for some users.

Best for outdoor enthusiasts needing a reliable and efficient hot water solution, the Rinnai RE160eP is particularly suited for cabins, RVs, or outdoor kitchens. Its combination of compact size, robust performance, and durable construction makes it an excellent choice for those who require hot water on demand without the bulk of traditional systems.

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Rheem RTGH 8.4 GPM Gas Water Heater

The adjustable valve sets the Rheem RRTGH84DVLN3701171 apart from conventional water heaters. This innovative feature allows users to customize the flow rate and temperature settings, optimizing performance for various needs. Constructed from 316-grade stainless steel, the unit resists corrosion and enhances durability, making it suitable for long-term use. With dimensions of 17-11/16 inches in width, it fits seamlessly into most residential spaces.

Key Advantages

• The unit offers a flow rate of 0.4 – 8.4 GPM, accommodating multiple outlets simultaneously.
• Temperature settings range from 100 to 140°F, with a default of 120°F, providing flexibility for user preferences.
• Electric ignition ensures reliable start-up, eliminating the need for pilot lights.
• Warranties include 1 year of labor, a 15-year heat exchanger, and 5 years on parts, reflecting manufacturer confidence in quality.

Limitations

• Not compatible with other gas appliances unless specifically designed for use with natural gas.
• Requires professional installation, which may add to overall costs.

Best for outdoor enthusiasts needing an efficient and reliable hot water solution, the Rheem RRTGH84DVLN3701171 is ideal for those who value performance and durability in a tankless water heater.

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Rheem High Efficiency Indoor Tankless Water Heater

The adjustable valve sets the Rheem RTG-84DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water Heater apart from its competitors. This innovative feature allows users to customize the water flow and temperature settings, ensuring optimal performance tailored to specific needs. Constructed from 316-grade stainless steel, this unit stands at 18 x 14 x 26 inches, providing a robust solution that resists corrosion and enhances durability.

Key Advantages

• The 8.4 GPM flow rate ensures continuous hot water supply, perfect for simultaneous usage across multiple applications, such as showers and dishwashers.
• High efficiency operation only activates the heater when hot water is needed, significantly reducing energy costs.
• Water-saving settings can conserve up to 1,100 gallons of water annually, making it an eco-friendly choice.
• Hot-start programming minimizes cold-water bursts, providing immediate hot water on demand.

Limitations

• Not compatible with all existing plumbing systems, which may require additional modifications for installation.
• Requires a specific venting system that may not be standard in all homes.

Best for outdoor enthusiasts needing a reliable and efficient hot water solution for their homes, the Rheem RTG-84DVLP-3 offers exceptional performance and energy savings for those who demand continuous hot water without compromise.

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Faq about Condensing Propane Tankless Water Heater:

1: What is a condensing propane tankless water heater?

A condensing propane tankless water heater heats water on demand using propane fuel, offering high efficiency by reusing exhaust gases to preheat incoming water.

2: How does a condensing propane tankless water heater work?

It works by heating water as it flows through the unit, using a heat exchanger to capture and utilize exhaust heat, which improves energy efficiency.

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

Benefits include energy savings, endless hot water supply, reduced greenhouse gas emissions, and a compact design that saves space.

4: Are there any drawbacks to condensing propane tankless water heaters?

Drawbacks may include higher upfront costs, potential need for larger gas lines, and specific venting requirements due to condensation.

5: How do I maintain a condensing propane tankless water heater?

Regular maintenance involves descaling to remove mineral buildup, checking filters, and ensuring proper venting to maintain efficiency and longevity.

6: Is installation difficult for these units?

Installation can be complex and is best performed by a qualified professional to ensure proper setup and compliance with local codes.

Conclusion

The Rinnai RE140iP Propane Tankless Water Heater exemplifies efficiency and compact design, catering to moderate hot water demands with remarkable energy conservation. Its user-friendly interface and robust performance make it an ideal choice for residential applications.

Conversely, the Rinnai RX199iN stands out for its superior flow rate, adeptly servicing larger households with simultaneous hot water needs. This model combines advanced technology with exceptional reliability, ensuring optimal performance even under peak demand.