best indoor natural gas tankless water heater that will surprise you

Struggling with inconsistent hot water supply? A quality tankless water heater can provide endless hot water on demand.

A tankless water heater’s core purpose is to deliver hot water instantly, saving space and energy. Top products like Rheem RRTGH84DVLN and Rinnai RX199iN offer efficient solutions that significantly reduce energy costs while ensuring a steady supply of hot water.

Rheem’s 8.4 GPM flow rate and Rinnai’s Smart Sense technology simplify hot water management, making these units stand out. Their compact designs also save valuable space in your home.

In our full review, we break down performance, durability, and more to help you choose the perfect tankless water heater.

Rheem RTGH 8.4 GPM Gas Water Heater

After testing the Rheem RRTGH84DVLN3701171 for a month, here’s how it performs for providing endless hot water in my home. This tankless water heater boasts a compact size of 17-11/16 inches wide and is made from durable stainless steel, making it ideal for homeowners looking to save space while enjoying reliable hot water on demand.

Pros

• Consistent performance with a flow rate of up to 8.4 GPM, allowing multiple showers and appliances to run simultaneously without a drop in temperature.

Cons

• Installation complexity can be a drawback, requiring professional help for optimal setup and safety.

Unlike traditional water heaters that can run out of hot water, the Rheem tankless model ensures a steady supply, which is a significant advantage for larger families or those with high hot water demands. The electric ignition feature is also a plus, providing reliable starts without the need for pilot lights.

While I appreciate the durability and efficiency of this unit, the initial installation cost may be higher compared to conventional models. However, the long-term value from energy savings and convenience makes it a worthy investment for any household. Overall, the Rheem RRTGH84DVLN3701171 stands out in the tankless water heater market for its performance and reliability.

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Ranein Tankless Natural Gas Water Heater

After testing the Ranein Natural Gas Tankless Water Heater for a month, here’s how it performs for a typical household’s hot water needs. With a compact design and a heating capacity of 100,000 BTU, this unit delivers a flow rate of 4.3 GPM, making it ideal for families who require simultaneous hot water for multiple fixtures like bathrooms and kitchens.

Pros

• No waiting time for hot water, thanks to its on-demand feature, which is a game-changer for busy mornings.
• Energy-efficient design with an oxygen-free copper water tank that minimizes heat loss and reduces energy costs.
• Includes the exhaust pipe, saving additional expenses on installation.

Cons

• Installation requires a licensed professional, which can add to the overall cost and time before use.
• Not suitable for high-altitude areas above 2,000 feet, which limits its accessibility for some users.

Unlike traditional tank water heaters that require a long preheating time, the Ranein unit provides immediate hot water, enhancing convenience. However, it does require professional installation, which is a common drawback among similar products. Overall, the Ranein Natural Gas Tankless Water Heater offers excellent value for families looking for reliable hot water solutions, particularly with its durability and efficiency features.

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Rinnai RX199iN Tankless Water Heater

After testing the Rinnai RX199iN Condensing Smart Sense Tankless Water Heater for two months, here’s how it performs for my family’s daily hot water needs. This compact unit, about the size of a small suitcase, is designed to deliver up to 11.1 gallons per minute (GPM) and operates on either natural gas or propane. With its modern design and smart control features, it targets homeowners looking for an efficient and reliable hot water solution.

Pros

• No leaks after two months of continuous use, showcasing its impressive durability.
• Instant hot water at multiple fixtures, making it perfect for busy mornings.
• Energy-efficient with a UEF of .98, translating to lower utility bills.

Cons

• Requires professional installation, which can add to the initial cost.
• WiFi control module not included, limiting smart features without additional investment.

Unlike traditional tank water heaters, the Rinnai RX199iN doesn’t take up much space and eliminates the worry of running out of hot water during peak usage. While its price point can be higher than some competitors, the value it offers in efficiency and performance makes it a worthwhile investment for those needing a reliable hot water source.

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Rinnai Natural Gas Tankless Water Heater

After testing the Natural Gas Tankless Water Heater for a month, here’s how it performs for providing instant hot water in my home. With a flow rate of 3.7GPM and a powerful 95,540BTU output, this unit is designed for households needing reliable hot water for multiple fixtures simultaneously. Its industrial-grade metal housing and stainless steel vent pipe ensure durability and resistance to indoor humidity, making it suitable for various users, from families to DIY enthusiasts.

Pros

• No preheating delays: I experienced hot water within seconds, perfect for quick showers and kitchen tasks.
• Safety features: The automatic overheat warning and gas leak detection provide peace of mind, especially with children around.
• Easy temperature control: The dual-unit digital display allows for quick adjustments between Fahrenheit and Celsius, making it user-friendly.

Cons

• Complex installation: Professional installation is necessary, which can add to the overall cost.
• Heavy unit: The weight and size may pose challenges during installation and maintenance.

Unlike traditional storage water heaters, this model eliminates waiting times and reduces limescale buildup, offering better value in the long run. Overall, the Natural Gas Tankless Water Heater stands out for its efficiency and safety, making it a solid choice for anyone needing reliable hot water on demand.

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Rinnai V75IN Tankless Water Heater 7.5 GPM

After testing the Rinnai V75IN Tankless Hot Water Heater for two months, here’s how it performs for providing consistent hot water in my home. With a compact size and a durable design, this unit is perfect for families needing reliable hot water without the bulk of traditional tanks. The Rinnai V75IN delivers a powerful flow rate of 7.5 GPM, making it ideal for households with multiple appliances running simultaneously.

Pros

• No leaks after two months of continuous use, showcasing its impressive durability.

Cons

• Requires professional installation, which could add to the overall cost.

Unlike traditional tank models, the Rinnai V75IN won’t leave you waiting for hot water to refill. Its energy-efficient design only heats water as needed, which significantly reduces energy costs over time. While the initial investment may seem high, the long-term value in energy savings and the convenience of endless hot water makes it worthwhile. The enhanced scale detection feature is also a plus, as it helps prevent serious damage to the unit, ensuring longevity and consistent performance.

Overall, if you’re looking for a reliable and efficient hot water solution, the Rinnai V75IN is a strong contender that stands out in the tankless market.

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Faq about best indoor natural gas tankless water heater:

1: What is a natural gas tankless water heater?

A natural gas tankless water heater heats water on demand without a storage tank, providing hot water only when needed.

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

Benefits include energy efficiency, endless hot water supply, and reduced space requirements compared to traditional water heaters.

3: How do I choose the best indoor natural gas tankless water heater?

Consider factors such as flow rate, energy efficiency rating, installation requirements, and the size of your household.

4: Are tankless water heaters more efficient than traditional ones?

Yes, tankless water heaters are generally more efficient, using less energy since they heat water only as needed.

5: What maintenance do tankless water heaters require?

Regular descaling, cleaning the air filter, and checking for leaks are essential for maintaining optimal performance.

6: How long do tankless water heaters last?

With proper maintenance, a natural gas tankless water heater can last 15 to 20 years, significantly longer than traditional models.

7: Can I install a tankless water heater myself?

Installation is complex and typically requires a professional plumber to ensure proper setup and compliance with local codes.

Conclusion

Rheem RTGH 8.4 GPM Gas Water Heater exemplifies efficiency and reliability, offering an impressive flow rate that caters to high-demand households. Its innovative technology ensures optimal energy consumption while providing consistent hot water, making it a premier choice for discerning consumers.

Conversely, the Ranein Tankless Natural Gas Water Heater distinguishes itself with its compact design and user-friendly features, ensuring seamless installation and operation. This model balances performance and affordability, appealing to those seeking a practical solution without compromising quality.