Struggling with inconsistent hot water? A tankless gas water heater can provide endless hot water on demand, solving your problem.
Tankless gas water heaters, like the Rinnai RX199iN and Rheem RTG-95DVLN-3, are designed for efficiency. They heat water only as needed, saving energy and reducing costs. With flow rates up to 11.1 GPM, they ensure you never run out of hot water.
In our full review, we break down performance, durability, and more to help you choose the right model for your home.
Rinnai RX199iN Tankless Water Heater
The adjustable valve sets the Rinnai RX199iN Condensing Smart Sense Tankless Water Heater apart in the market of high-efficiency water heaters. This compact unit measures just 14.5 x 18.5 x 24 inches and is constructed from durable 316-grade stainless steel, ensuring long-lasting performance and resistance to corrosion. With a powerful output of up to 11.1 GPM and a maximum heating capacity of 199,000 BTU, it effectively serves multiple fixtures simultaneously.
Key Advantages
- The Smart Sense gas control system optimizes fuel efficiency, achieving a UEF of .98, which is exceptional for a tankless model.
Limitations
- Not compatible with certain existing venting systems, requiring the RX-OVC vent cap for outdoor installations.
This water heater is ideal for outdoor enthusiasts and homeowners seeking a reliable, space-saving solution for their hot water needs. Its advanced features, such as the Quick Flush for maintenance and optional WiFi control through the Rinnai Central App, make it a smart choice for those who value efficiency and convenience. However, professional installation is recommended to ensure optimal performance and compliance with local regulations.
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ORBEK Natural Gas Tankless Water Heater
The adjustable valve sets the Orbek Natural Gas Tankless Water Heater apart from its competitors. This unit boasts an impressive output of up to 100,000 BTU and a flow rate of 4.3 GPM, making it suitable for simultaneous use across 2-3 fixtures. Crafted from durable 316-grade stainless steel and high-quality oxygen-free copper, it ensures longevity and exceptional heat transfer efficiency.
Key Advantages
- Its compact dimensions of 20.5″H x 13.0″L x 7.0″W allow for easy installation in tight spaces, saving over 50% of the area compared to traditional tank heaters.
Limitations
- It is not compatible with non-standard venting systems, requiring standard 3″ OD vents for optimal performance.
Ideal for outdoor enthusiasts and homeowners seeking an efficient solution for on-demand hot water, the Orbek tankless water heater excels in energy efficiency with its ability to adjust heating modes based on seasonal needs. The built-in chip provides stable temperature control, adjusting heating power 20,000 times per second to maintain a consistent water temperature within 1°F. Additionally, the LED digital display simplifies temperature adjustments, making it user-friendly. Overall, the Orbek Natural Gas Tankless Water Heater is a robust choice for those needing reliable hot water without the bulk of traditional systems.
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Rheem High Efficiency Indoor Tankless Water Heater
The adjustable valve sets the Rheem RTG-95DVLN-3 apart from other tankless water heaters. This feature allows for precise control over water temperature, ensuring optimal comfort. Constructed from durable materials, it features 316-grade stainless steel that resists corrosion, enhancing its longevity. With dimensions of 18.5 x 30 x 12 inches, this unit is compact enough for indoor installation while providing a robust performance of up to 9.5 GPM.
Key Advantages
- The high-efficiency design means the heater only operates when hot water is needed, significantly reducing energy costs.
- Its water-saving setting can conserve up to 1,100 gallons of water annually, making it an eco-friendly choice.
- Hot-start programming keeps the unit ready, preventing cold-water bursts during usage.
- LeakGuard Leak Detection & Prevention technology protects your home from potential water damage by identifying internal leaks.
Limitations
- Not compatible with electric water heater systems, which may limit options for some users.
Best for outdoor enthusiasts needing a reliable and efficient hot water solution for multiple applications, the Rheem RTG-95DVLN-3 is an excellent investment for those seeking continuous hot water while minimizing energy and water waste.
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Rinnai V53DeN Outdoor Natural Gas Water Heater
The adjustable valve sets the Rinnai V53DeN Natural Gas Tankless Water Heater apart from its competitors. This innovative feature allows users to customize the water flow rate, optimizing performance based on specific needs. Constructed from 316-grade stainless steel, the unit resists corrosion, ensuring longevity and reliability. With dimensions of 14.5 x 18.5 x 26 inches, it is designed to fit seamlessly into outdoor spaces without occupying excessive room.
Key Advantages
- The 5.3 GPM flow rate allows simultaneous use of up to four appliances, making it ideal for larger households.
- Energy efficiency is a hallmark of this model, as it heats water on demand, reducing energy waste and lowering utility bills.
- The 10-year warranty on the heat exchanger provides peace of mind regarding durability and performance.
- Its compact design is perfect for modern homes, enabling installation in tight outdoor spaces.
Limitations
- Not compatible with certain older plumbing systems, which may require additional modifications for installation.
Best for outdoor enthusiasts needing a reliable and efficient hot water solution, the Rinnai V53DeN is an excellent choice for those seeking endless hot water without compromising on space or performance.
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MIZUDO Natural Gas Tankless Water Heater
The adjustable valve sets the MIZUDO Natural Gas Tankless Water Heater apart from competitors in the market. This feature allows for precise control over water flow and temperature, ensuring optimal performance for various household needs. Constructed from 316-grade stainless steel, the heat exchanger resists corrosion, enhancing durability and longevity. The unit measures 20.5 x 13.0 x 7.0 inches, making it a compact solution suitable for indoor installation.
Key Advantages
- The oxygen-free copper heat exchanger provides faster heating capabilities, outperforming standard steel models and delivering hot water within 10 seconds at a rate of 3.6 GPM and an impressive 80,000 BTU.
- Energy efficiency is a hallmark of this unit, as it operates on-demand, consuming gas only during use, which can lead to significant savings on utility bills.
- Safety is prioritized with UL listing and CSA certification, ensuring compliance with US safety standards for gas appliances.
- Integrated protection features, including freeze protection and leak detection, enhance user safety and reliability.
Limitations
- The unit is not compatible with low-pressure natural gas systems, which may limit its application in certain regions.
Best for outdoor enthusiasts needing a reliable, energy-efficient solution for continuous hot water in homes with 2-3 low-flow fixtures, the MIZUDO tankless water heater is a top choice for modern living.
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Faq about best tankless gas water heater:
1:What is a tankless gas water heater?
A tankless gas water heater heats water on demand without storing it in a tank, providing a continuous supply of hot water.
2:What are the benefits of a tankless gas water heater?
Benefits include energy efficiency, space-saving design, longer lifespan, and an endless supply of hot water.
3:How do I choose the best tankless gas water heater?
Consider factors like flow rate, energy efficiency ratings, size, and your household’s hot water needs.
4:Are tankless gas water heaters energy-efficient?
Yes, they are more energy-efficient than traditional tank heaters, as they only heat water when needed, reducing energy waste.
5:What maintenance do tankless gas water heaters require?
Regular descaling, checking filters, and inspecting gas connections are essential for optimal performance and longevity.
6:Can I install a tankless gas water heater myself?
While some may attempt DIY installation, professional installation is recommended for safety and compliance with local codes.
7:What is the lifespan of a tankless gas water heater?
Typically, a tankless gas water heater lasts 15 to 20 years with proper maintenance.
Conclusion
The Rinnai RX199iN Tankless Water Heater exemplifies efficiency and innovation, delivering an impressive flow rate while ensuring optimal energy conservation. Its compact design and advanced technology position it as a premier choice for discerning consumers seeking reliability and performance.
In parallel, the ORBEK Natural Gas Tankless Water Heater stands out for its user-friendly interface and robust construction, catering to diverse household needs with remarkable consistency. Both products epitomize excellence in the tankless water heater market, offering unparalleled convenience and sustainability for modern living.
