best tankless gas water heater that will change your daily routine

Frustrated with running out of hot water? The best tankless gas water heater delivers endless comfort in no time.

The **Rinnai RX199iN** is perfect for *large households* needing a reliable and efficient hot water solution.

Plus, its *smart technology* optimizes energy use, providing significant savings on utility bills.

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

Rinnai RX199iN Tankless Water Heater

The Rinnai RX199iN Condensing Smart Sense Tankless Water Heater is designed to provide a continuous supply of hot water, ideal for homeowners seeking efficient and reliable water heating solutions. This model is suitable for both indoor and outdoor installations, making it versatile for various home settings. With dimensions comparable to a small suitcase, this compact unit delivers up to 11.1 gallons per minute (GPM), accommodating multiple fixtures simultaneously, including showers and appliances.

Constructed with high-quality materials, the Rinnai RX199iN features a modern design and operates using either natural gas or propane. Its energy efficiency is impressive, boasting a UEF (Uniform Energy Factor) of .98, which translates to significant savings on energy bills. The Smart Sense gas control system ensures optimal performance tailored to your home’s needs.

This tankless water heater solves the common problem of running out of hot water, especially during peak usage times. Its efficient heating capabilities improve the user experience by providing instant hot water on demand, eliminating the wait associated with traditional water heaters.

Pros

• Compact design saves space without sacrificing performance.
• High energy efficiency reduces utility costs.
• Provides hot water for multiple fixtures simultaneously.
• Flexible installation options for indoor or outdoor use.
• Smart technology enables easy monitoring and control (WiFi module sold separately).

Cons

• Professional installation is recommended, which may incur additional costs.
• WiFi control module not included, requiring a separate purchase for smart features.
• Initial price point may be higher compared to traditional water heaters.

The Rinnai RX199iN stands out for its performance and energy efficiency, making it an excellent choice for families or individuals who prioritize hot water availability and energy savings. While it requires professional installation and has a higher upfront cost, the long-term benefits and reliability make it a worthwhile investment for those looking to upgrade their home’s water heating system.

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Rheem RTGH 8.4 GPM Tankless Water Heater

The Rheem RRTGH84DVLN3701171 Rheem RTGH Series is designed to provide efficient hot water on demand, ideal for homeowners looking to upgrade their water heating system. This tankless water heater caters specifically to residential needs, delivering a remarkable flow rate of 8.4 gallons per minute (GPM). With a compact size of 17-11/16 inches in width and made from durable stainless steel, it ensures both longevity and aesthetic appeal.

This product effectively solves the common problem of running out of hot water, making it perfect for larger households or those with high hot water demand. The adjustable temperature settings, ranging from 100°F to 140°F, allow users to customize their water temperature according to personal preferences, enhancing the overall experience.

Pros

• High flow rate of 8.4 GPM, suitable for multiple simultaneous uses.
• Durable stainless steel construction ensures long-lasting performance.
• Compact size saves space compared to traditional water heaters.
• Electric ignition provides reliable starting without the need for a pilot light.
• Comprehensive warranty coverage: 1 year labor, 15 years for the heat exchanger, and 5 years for parts.

Cons

• Initial installation cost may be higher compared to traditional tank heaters.
• Requires adequate gas supply and venting, which may limit installation options.

The Rheem RRTGH84DVLN3701171 excels in performance, featuring a powerful 157,000 BTU output that ensures quick heating. Its standout feature is the ability to supply continuous hot water without the need for a bulky tank. This makes it particularly well-suited for families that require hot water for showers, laundry, and dishwashing simultaneously. However, potential buyers should consider the installation requirements, as proper venting and gas line capacity are essential for optimal performance.

In summary, the Rheem RTGH Series is an excellent choice for homeowners seeking a reliable and efficient tankless water heater. Its combination of high flow rate, durability, and customizable temperature settings make it ideal for larger households. While the initial investment may be higher, the long-term benefits of energy savings and convenience justify the cost.

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Ranein Tankless Gas Water Heater 4.3 GPM

Ranein Natural Gas Tankless Water Heater with Vent Pipe is designed to provide on-demand hot water, ideal for homeowners seeking efficiency and convenience. With a heating capacity of 100,000 BTU and a flow rate of 4.3 gallons per minute (GPM), this unit caters to multiple water supply points, making it perfect for bathrooms, kitchens, and bar areas. Its compact design and robust features ensure that it meets the hot water needs of a modern household without the limitations of traditional tank heaters.

This tankless water heater addresses the common issue of waiting for hot water. Unlike traditional systems, which require a 30-minute preheating time, the Ranein model delivers unlimited hot water instantly. Its Four Seasons Function automatically adjusts water temperature based on seasonal changes, while the Kitchen Function ensures a default output temperature of 100°F, ideal for cooking and cleaning. The Bathtub Function allows for customizable output quantities, enhancing usability for various needs.

Pros

• Instant hot water eliminates waiting time.
• Energy-efficient design reduces heat loss and lowers bills.
• Includes exhaust pipe, saving additional costs.
• Compact and easy to install with professional help.

Cons

• Not suitable for installations above 2,000 feet elevation.
• Requires professional installation to comply with regulations.

The Ranein Natural Gas Tankless Water Heater stands out for its performance and user-friendly features. It is best suited for families or individuals who prioritize efficient hot water access without the bulk of traditional tanks. While it has some limitations, such as installation requirements and altitude restrictions, its benefits far outweigh these minor drawbacks. This product is an excellent investment for those looking to enhance their home’s hot water system.

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Rheem High Efficiency Outdoor Tankless Water Heater

The Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater is designed to provide continuous hot water for your home, making it ideal for families or households that often utilize multiple hot water sources simultaneously. With a capacity of 7.0 GPM (gallons per minute), it ensures that you never run out of hot water, whether you’re showering, washing dishes, or doing laundry. This model features a sleek gray finish and is built with durable materials that ensure longevity and reliability.

This tankless water heater addresses the common problem of running out of hot water during peak usage times, enhancing the user experience by delivering hot water on demand. Its compact design saves space, making it perfect for homes with limited installation areas.

Pros

• Provides continuous hot water for multiple applications simultaneously.
• Energy-efficient, only operating when hot water is needed, reducing energy costs.
• Water-saving feature can conserve up to 1,100 gallons of water annually.
• Hot-start programming prevents cold-water bursts, ensuring comfort.
• Compact size is 19% smaller and 22% lighter than previous models, facilitating easy installation.

Cons

• Initial investment may be higher compared to traditional water heaters.
• Requires proper venting for installation, which may add to setup complexity.
• Performance may vary based on the incoming water temperature.

The Rheem RTG-70XLN-3 stands out with its high efficiency and user-friendly features. It is particularly suited for larger households that require a steady supply of hot water throughout the day. While the upfront cost might be a consideration, the long-term savings on energy and water bills make it a wise investment. Minor drawbacks, such as the need for proper venting and its performance sensitivity to incoming water temperature, are outweighed by its numerous benefits.

In summary, the Rheem RTG-70XLN-3 is an excellent choice for homeowners seeking a reliable, efficient, and space-saving hot water solution.

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Rheem High Efficiency Indoor Tankless Water Heater

The Rheem RTG-95DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater is designed to provide continuous hot water for your entire home, making it ideal for families or households with high hot water demands. With a flow rate of 9.5 gallons per minute (GPM), this water heater ensures that multiple applications, such as showers and dishwashers, can run simultaneously without any drop in temperature. Its compact design and sleek finish allow it to fit seamlessly into various indoor spaces.

This model is crafted from durable materials and features advanced technology that enhances its performance. The Rheem RTG-95DVLN-3 is particularly beneficial for homeowners looking to save on energy costs, as it only operates when hot water is needed, significantly reducing waste. Additionally, the water-saving setting can conserve up to 1,100 gallons of water per year, making it an eco-friendly choice.

Pros

• Continuous hot water supply for multiple uses.
• Energy-efficient operation reduces utility bills.
• Water-saving features promote sustainability.
• Hot-start programming prevents cold-water bursts.
• LeakGuard technology offers protection against water damage.

Cons

• Higher initial investment compared to traditional water heaters.
• Installation may require professional assistance.
• Limited to natural gas connections, not suitable for electric setups.

The performance of the Rheem RTG-95DVLN-3 stands out due to its ability to deliver hot water on demand, making it a reliable option for busy households. Its robust leak detection system adds an extra layer of security, ensuring peace of mind for homeowners. While the initial cost may be higher than conventional water heaters, the long-term savings on energy and water bills justify the investment. This model is best suited for families or individuals who prioritize efficiency and sustainability in their home appliances.

In summary, the Rheem RTG-95DVLN-3 is an excellent choice for those seeking a high-performance, energy-efficient water heater that meets the demands of modern living. Its advanced features and reliable operation make it a valuable addition to any home.

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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, providing hot water without the need for a storage tank.

2:What are the benefits of using a tankless gas water heater?

Benefits include energy efficiency, endless hot water supply, compact size, and lower utility bills.

3:How do I choose the best tankless gas water heater for my home?

Consider factors like flow rate, energy efficiency, installation space, and fuel type to find the best unit for your needs.

4:Are tankless gas water heaters energy efficient?

Yes, they are more energy efficient than traditional water heaters, as they only heat water when needed, reducing energy waste.

5:What maintenance is required for tankless gas water heaters?

Regular maintenance includes descaling to prevent mineral buildup and checking the gas line and ventilation system for safety.

6:How long do tankless gas water heaters last?

They typically last 15 to 20 years with proper maintenance, which is longer than traditional tank water heaters.

7:Can I install a tankless gas water heater myself?

It is recommended to hire a professional for installation due to the complexity and safety concerns involved.

Conclusion

Both the Rinnai RX199iN and Rheem RTGH 8.4 GPM exemplify the pinnacle of efficiency and performance in tankless gas water heaters. The Rinnai model stands out for its compact design and exceptional flow rate, catering to diverse household needs with remarkable reliability.

Conversely, the Rheem RTGH 8.4 GPM impresses with its superior energy efficiency and advanced technology, ensuring optimal hot water delivery while minimizing environmental impact. Each product offers distinctive advantages, making them formidable contenders for those seeking innovative solutions in modern water heating.