Are you tired of running out of hot water during showers? A propane tankless water heater could be your solution.
A propane tankless water heater provides continuous hot water on demand, making it perfect for busy households. The Rheem RTG-70DVLP-3 and Rinnai RE160iP are top products that deliver efficient heating while saving space. Their compact design and high flow rates ensure you enjoy hot water whenever needed, reducing wait times and enhancing comfort.
Both models offer unique selling points: the Rheem’s high efficiency and the Rinnai’s advanced temperature control. In our full review, we break down performance, durability, and more to help you choose.


Rheem High Efficiency Tankless Water Heater
Rheem RTG-70DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water Heater: 7.0 GPM, liquid propane, 5-year warranty.
Benefits
- Provides continuous hot water for multiple applications simultaneously, ensuring comfort for your entire household.
- High efficiency reduces energy costs by operating only when hot water is needed.
- Water-saving setting conserves up to 1,100 gallons of water annually, promoting eco-friendly usage.
- Hot-start programming eliminates cold-water bursts, maintaining a steady flow of hot water.
- LeakGuard Leak Detection protects your home from potential water damage by detecting leaks early.
Drawbacks
- Requires professional installation, which may add to initial costs.
- No option for electric power limits use to propane, which may not be available in all areas.
This water heater is a practical pick for households needing reliable hot water without the hassle of a tank. It is especially suited for families who frequently use multiple hot water sources at once, providing peace of mind with its efficiency and safety features.
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Rinnai RE140iP Propane Tankless Water Heater
Rinnai RE140iP Non-Condensing Propane Tankless Water Heater: 5.3 GPM, compact design, 140,000 BTU, 15-year warranty.
Benefits
- Provides hot water for up to 5 fixtures simultaneously, ensuring you never run out during peak usage.
Drawbacks
- Professional installation required, which may add to the overall cost and time before use.
This tankless water heater is designed for efficiency and convenience. Its compact size allows it to fit in tight spaces, making it ideal for homes with limited room for traditional water tanks. The LED screen provides helpful service reminders and error codes, enhancing user experience and maintenance.
While the unit is powerful and reliable, it is essential to have it installed by a professional to ensure safety and optimal performance. Additionally, the non-condensing design may not be as energy-efficient as some newer models, but it still offers significant savings compared to traditional heaters.
A practical pick for small spaces, the Rinnai RE140iP is perfect for homeowners looking to maximize their utility without sacrificing performance. With its robust warranty and smart design, this heater is a solid investment for those needing consistent hot water supply.
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Rinnai RE160iP Propane Tankless Water Heater
Rinnai RE160iP Non-Condensing Propane Tankless Water Heater: Up to 6.6 GPM, indoor installation, 160,000 BTU. Compact design, LED screen for service reminders, and a 15-year guarantee on the heat exchanger.
Benefits
- Provides up to 6.1 GPM, allowing multiple fixtures to run simultaneously without running out of hot water.
Drawbacks
- Professional installation recommended, which may add to the overall cost and time before use.
The Rinnai RE160iP is a smart choice for those seeking a reliable hot water solution in limited spaces. Its compact size means it can fit into tight areas while still delivering high performance. The energy-efficient design heats water only when needed, reducing energy waste and costs. The LED screen is user-friendly, providing essential service reminders and error codes for easy maintenance.
However, the requirement for professional installation may deter some users who prefer DIY solutions. Additionally, while the heater is durable, the upfront investment can be significant, especially when factoring in installation costs.
This water heater is ideal for homeowners looking to maximize efficiency and convenience in small spaces. With its robust performance and smart features, the Rinnai RE160iP is a practical choice for anyone needing consistent hot water without the bulk of traditional tanks.
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Rinnai RE180eP Outdoor Propane Tankless Water Heater
Rinnai RE180eP Non-Condensing Propane Tankless Water Heater: 12” long, durable construction, 180,000 BTU, outdoor installation.
Benefits
- Provides up to 8.5 GPM, ensuring hot water for multiple fixtures simultaneously.
Drawbacks
- Professional installation required, which can add to overall costs.
The Rinnai RE180eP is a compact solution for those needing reliable hot water without the bulk of traditional tanks. Its smart design heats water only when necessary, conserving energy and reducing utility bills. The LED screen enhances user experience with service reminders and error codes, making maintenance straightforward.
With a capacity of up to 8.5 gallons per minute, this unit is capable of serving multiple fixtures at once, making it ideal for busy households. Its small, suitcase-like size allows it to fit into tight spaces, a significant advantage for homeowners with limited installation options.
However, potential buyers should be aware that professional installation is recommended, which may deter some DIY enthusiasts and increase initial costs. Additionally, the unit has no dishwasher-safe parts, which could be a consideration for those prioritizing easy cleaning.
Overall, the Rinnai RE180eP is a practical pick for small spaces needing efficient hot water solutions without the hassle of a bulky tank.
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Rinnai RE180iP Propane Tankless Water Heater
Rinnai RE180iP Non-Condensing Propane Tankless Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Provides up to 8.5 GPM, allowing simultaneous use of 7 fixtures without running out of hot water.
Drawbacks
- Professional installation recommended; DIY installation may lead to complications.
This compact tankless water heater is designed for indoor installation, making it a smart choice for homes with limited space. The improved design heats water only when necessary, conserving energy and reducing costs. The LED screen is a valuable feature, providing service reminders and error codes for easy troubleshooting.
While the Rinnai RE180iP excels in performance and efficiency, it is essential to note that professional installation is recommended. This may add to the overall cost but ensures optimal functionality and safety. Additionally, it is not suitable for areas with low groundwater temperatures without proper assessment.
A practical pick for small spaces, this tankless water heater combines durability with smart design, making it an excellent investment for those seeking a reliable hot water solution without the bulk of traditional tanks.
To buy this product, click here.
Faq about Non Condensing Propane Tankless Water Heater:
1:What is a non condensing propane tankless water heater?
A non condensing propane tankless water heater heats water on demand using propane fuel without recovering heat from exhaust gases.
2:What are the benefits of a non condensing propane tankless water heater?
Benefits include lower initial costs, compact size, and efficient water heating without the need for venting exhaust gases through a secondary heat exchanger.
3:How does a non condensing propane tankless water heater work?
It heats water directly as it flows through the unit, activating when a hot water tap is opened, providing continuous hot water without storage.
4:Are there energy efficiency differences between condensing and non condensing models?
Yes, condensing models are generally more energy efficient due to heat recovery, while non condensing models are less efficient but often cost less upfront.
5:What maintenance is required for non condensing propane tankless water heaters?
Regular maintenance includes descaling to prevent mineral buildup and checking the ignition system and filters for optimal performance.
6:Can non condensing propane tankless water heaters be installed indoors?
Yes, they can be installed indoors, but proper ventilation is necessary to ensure safe exhaust gas removal.
7:What is the lifespan of a non condensing propane tankless water heater?
Typically, they last 15 to 20 years with proper maintenance, offering a long-term solution for hot water needs.
Conclusion
Rheem’s High Efficiency Tankless Water Heater exemplifies cutting-edge technology, delivering unparalleled performance and energy conservation, making it an optimal choice for households seeking reliability and efficiency. Its innovative design ensures a continuous supply of hot water, catering to modern lifestyle demands.
Conversely, the Rinnai RE140iP Propane Tankless Water Heater stands out for its robust construction and impressive flow rate, providing users with both durability and convenience. This model’s user-friendly features and exceptional energy savings position it as a formidable contender in the market, appealing to discerning consumers prioritizing quality and sustainability.




