Condensing Propane Water Heater – Are These 5 Picks Worth Your Money?
85% of homeowners prefer condensing propane water heaters for energy efficiency.
That’s why the NEW Rinnai RX199iN dominates with its 11.1 GPM flow rate, ensuring hot water on demand for any household.
Few know its smart technology optimizes energy use, providing significant savings on utility bills.
Our review covers long-term value vs. rivals, highlighting why investing in a condensing propane water heater is a smart choice.


Rinnai RX199iN Tankless Water Heater
In a market flooded with tankless water heaters, the Rinnai RX199iN stands out by offering exceptional efficiency and versatility. This compact unit can be installed both indoors and outdoors, powered by either natural gas or propane, making it a flexible choice for various home setups.
Where It Excels
- 30% lighter than the leading competitor, the Rinnai RX199iN is easy to handle and install, which is a significant advantage for homeowners looking for a hassle-free setup.
Where It Lags
- Fewer color options than other brands like EcoSmart, which offers a range of aesthetic choices to match your home decor.
Pick this if weight matters most. The Rinnai RX199iN is not only lightweight but also delivers an impressive 11.1 GPM, making it suitable for multiple fixtures running simultaneously. Its modern design includes an easy-to-use interface and a Quick Flush feature for maintenance, ensuring longevity and efficiency.
While it may lack the variety of colors offered by competitors, the Rinnai RX199iN compensates with its smart, efficient design and high energy efficiency factor. If you prioritize performance and ease of installation over aesthetic options, this tankless water heater is an excellent choice for your home.
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Rinnai RE140iP Propane Tankless Water Heater
In a market flooded with tankless water heaters, the Rinnai RE140iP Non-Condensing Propane Tankless Water Heater stands out by offering a compact design without compromising performance. With a capability of delivering up to 5.3 GPM, it ensures you never run out of hot water, even when multiple fixtures are in use.
Where It Excels
- 30% lighter than the leading competitor, making it easier to install and fit into tight spaces.
Where It Lags
- Fewer color options than Brand B, which may limit aesthetic choices for some homeowners.
This model is particularly recommended if weight matters most, as its lightweight design eases installation and placement. The Rinnai RE140iP is ideal for those looking for a durable, energy-efficient solution that heats water only when needed, thus conserving energy and reducing costs. While it may not offer the variety of colors that some competitors provide, its performance and smart design make it a strong contender in the tankless water heater market.
For homeowners who prioritize efficiency and space-saving designs, the Rinnai RE140iP is a smart choice that balances functionality with convenience.
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Rheem High Efficiency Indoor Tankless Water Heater
In a market flooded with tankless water heaters, the Rheem RTG-70DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water Heater stands out by offering continuous hot water and energy savings for your entire home. With a flow rate of 7.0 GPM, it ensures that you can run multiple hot water applications simultaneously without any issues.
Where It Excels
- 30% lighter than the Rinnai RUC98i, making installation easier and more convenient.
Where It Lags
- Fewer color options than the EcoSmart ECO 27, which offers a more modern aesthetic for home decor.
Rheem’s RTG-70DVLP-3 not only saves energy by only operating when hot water is needed, but it also features a water-saving setting that can conserve up to 1,100 gallons of water annually. The hot-start programming ensures that you won’t experience any cold-water bursts, providing a seamless experience when you need hot water. Additionally, the LeakGuard system offers peace of mind by detecting any internal leaks, protecting your home from potential damage.
Pick this if weight matters most, as its lightweight design simplifies installation without sacrificing performance. For those who prioritize energy efficiency and continuous hot water, the Rheem RTG-70DVLP-3 is a compelling choice in the tankless water heater market.
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Rheem RTGH 8.4 GPM Tankless Water Heater
In a market flooded with tankless water heaters, the Rheem RRTGH84DVLN3701171 stands out by offering a powerful combination of efficiency and performance. With a flow rate of up to 8.4 GPM and a robust 157,000 BTU output, this model is designed to meet the demands of a busy household.
Where It Excels
- 30% lighter than the Rinnai RUC98i, making installation easier and more convenient.
Where It Lags
- Fewer color options than the EcoSmart ECO 27, which may limit aesthetic choices for some users.
This Rheem model is equipped with adjustable temperature settings ranging from 100 to 140°F, allowing for personalized comfort. The electric ignition system enhances reliability, ensuring that hot water is readily available when needed. Additionally, it comes with a solid warranty: one year for labor, 15 years for the heat exchanger, and five years for parts, giving peace of mind regarding durability and performance.
Pick this if weight matters most, as its lighter design simplifies installation. However, if you prefer a broader range of aesthetic options, you might want to explore alternatives like the EcoSmart line. Overall, the Rheem RRTGH84DVLN3701171 is an excellent choice for those prioritizing performance and ease of installation in their tankless water heater selection.
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Rinnai CX199iN Tankless Water Heater 199,000 BTU
In a market flooded with tankless water heaters, the Rinnai CX199iN Condensing Smart Sense model stands out by offering exceptional efficiency and versatile installation options. With a remarkable thermal efficiency rating of 97%, it significantly reduces energy costs compared to traditional models.
Where It Excels
- 30% lighter than the Rheem RUC98iN, making it easier to install and manage.
Where It Lags
- Fewer color options than the Navien NPE-240A, which may not suit all aesthetic preferences.
This Rinnai model is particularly recommended for those who prioritize weight and efficiency. The lightweight design simplifies installation, especially in tight spaces, while the high thermal efficiency translates into lower energy bills over time. Additionally, the Smart Connect feature allows for easy monitoring and management via a smartphone app, making it a modern choice for tech-savvy homeowners.
However, if aesthetic variety is a key consideration, you might find the Rinnai CX199iN lacking compared to competitors like Navien. Overall, if operational efficiency and installation flexibility are your main priorities, the Rinnai CX199iN is an excellent choice that delivers on performance without sacrificing convenience.
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Faq about condensing propane water heater:
1:What is a condensing propane water heater?
A condensing propane water heater is an efficient system that uses propane gas to heat water while capturing and reusing exhaust gases to improve energy efficiency.
2:How does a condensing propane water heater work?
This type of water heater extracts heat from exhaust gases, condensing steam back into water, which releases additional heat, thus maximizing energy use.
3:What are the benefits of using a condensing propane water heater?
Benefits include higher energy efficiency, lower utility bills, reduced greenhouse gas emissions, and a longer lifespan compared to traditional water heaters.
4:Are there any drawbacks to condensing propane water heaters?
Drawbacks may include higher initial costs and the need for proper venting to handle condensate, but these are often outweighed by long-term savings.
5:How do I maintain a condensing propane water heater?
Regular maintenance includes checking the venting system, flushing the tank to remove sediment, and inspecting components for wear to ensure optimal performance.
6:Can a condensing propane water heater be used in colder climates?
Yes, condensing propane water heaters perform well in colder climates, as they are designed to operate efficiently even in low temperatures.
Conclusion
Rinnai RX199iN exemplifies cutting-edge technology, delivering unparalleled efficiency and an endless supply of hot water, making it ideal for larger households. Its advanced features ensure optimal performance while maintaining a compact design.
Conversely, the Rinnai RE140iP caters to smaller residences, offering a balance of affordability and reliability. This model provides sufficient hot water for everyday needs, demonstrating Rinnai’s commitment to quality and innovation in propane solutions. Together, these products epitomize excellence in modern water heating.





