Best Natural Gas Tankless Water Heater Reviews

For those yearning for efficiency, compactness, and an unceasing supply of hot water, the Rinnai V75IN Tankless Hot Water Heater should rank high on your shortlist. The allure of the Rinnai V75IN is not just its energy conservation ethos. Not only does it save energy by heating water only when needed, but its compact design also makes it fit easily into most homes. This tankless hot water heater is a savoir against those infuriating moments when you’re ensconced in a warm shower and suddenly the water runs cold. Delivering an impressive 7.5 gallons per minute, it’s akin to having a waterfall at your beck and call. Five fixtures running simultaneously? It’s unfazed. Enhanced scale detection is built in, which mitigates potential long-term damage, ensuring its longevity and consistent performance. 

Key Features:

• Efficiency: Only heats water when you need it with efficient natural gas. This means you save on energy and never run out of hot water.
• Flow Rate: 7.5 gallons per minute
• Warranty: 15 years for the heat exchanger, 5 years for labor, and 1 year for parts.
• WiFi Control: Optional, with the separate Controlr module.
• Size: At 17.5 x 30 x 13 inches it’s as small as a briefcase. Perfect for homes where space is at a premium.
• Durable: Built-in scale detection reduces long-term damage and extends its life.
• Installation: While it’s designed for easy setup indoors, it’s best installed by a pro. Rinnai even helps you find local technicians.

Who Should Buy It?

The Rinnai V75IN is great for homeowners who want both efficiency and consistent hot water. Especially useful for homes with medium to high water usage.

Pros:

• Energy-efficient, only heats water when necessary
• Compact size, fits in a variety of spaces
• High flow rate, enough for multiple fixtures at once
• Enhanced scale detection for improved longevity
• Comprehensive warranty for added peace of mind
• Optional WiFi control for convenient temperature adjustments
• Trusted brand with a reputation for quality

Cons:

• Professional installation is recommended
• Controlr module for WiFi control is not included

 

There’s an undeniable allure in products that meld efficiency with power, and the Rinnai RU130iN Condensing Tankless Hot Water Heater is one such offering. With the RU130iN, it’s evident that Rinnai is not content resting on its laurels. Beyond the energy savings inherent to tankless water heaters, this unit impresses with its spatial economy. It’s like a guardian, protecting you from those jarring instances when a pleasurable hot shower turns bitterly cold. Boasting a robust 7 gallons per minute, it’s akin to having a river ready to surge at your command. Running multiple fixtures at once? The RU130iN doesn’t even break a sweat. Moreover, the advanced condensing technology ensures maximum efficiency and prolonged heater life.

Key Features:

• Efficiency: Condensing technology ensures water heats up rapidly, reducing energy usage.
• Flow Rate: A whopping 7 gallons per minute with up to 11GPM variants
• Warranty: 15 years for the heat exchanger, 5 years for labor, and 1 year for parts.
• WiFi Control: Optional, available through the separate Controlr module.
• Size: Compact and streamlined dimensions of 22.05 x 14.76 x 33.86 inches, a space-saver for modern homes.
• Durability: Advanced tech not only ensures efficiency but also guards against wear and tear.
• Installation: Though geared for easy installation indoors, professional installation is recommended. 

Who Should Buy It?

The Rinnai RU130iN is tailor-made for households that prioritize energy efficiency without compromising on water flow. It’s especially ideal for homes with significant water needs.

Pros:

• Ultra-efficient, thanks to the condensing technology.
• Space-conscious design, easily fitting into modern homes.
• Unparalleled flow rate supports numerous fixtures simultaneously.
• Designed for longevity with state-of-the-art technology.
• Solid warranty coverage for peace of mind.
• Option for WiFi control for on-the-fly adjustments.
• Renowned brand with a solid track record.

Cons:

• Professional installation is a must for optimal performance.
• Controlr module for WiFi needs to be bought separately.

 

Rinnai’s commitment to pushing the boundaries of water heating technology shines brightly with the introduction of the V53DeN Tankless Hot Water Heater. Designed with the discerning homeowner in mind, this model not only boasts of efficient heating but also factors in the increasing demand for space optimization in homes. With its impressive 5.3 GPM and natural gas operation, the V53DeN promises an unceasing supply of warmth and luxury. What sets it apart further is its design optimized for outdoor installation, freeing up indoor spaces and reducing ventilation concerns. Merging performance, space-saving, and the efficiency of natural gas, Rinnai delivers a compelling product in the V53DeN.

Key Features:

• Efficiency: Natural gas-powered, ensuring consistent, rapid heating.
• Flow Rate: Respectable 5.3 gallons per minute, adeptly serving most household demands.
• Warranty: Rinnai’s confidence in its craftsmanship reflects in its generous warranty offers.
• Design: Measuring 7.9 x 14 x 21.8 inches, it conserves valuable outdoor living space.
• Safety: Built-in safety features ensure it operates optimally in outdoor conditions.
• Control System: Easy-to-use interface for seamless temperature adjustments.
• Installation: Exclusively designed for outdoor setups, it nonetheless requires professional installation for peak performance.

Who Should Buy It?

The Rinnai V53DeN is a gem for homeowners seeking to combine the power of natural gas with the convenience of outdoor installation. It’s particularly fitting for homes with space constraints or those aiming for a minimalist indoor aesthetic.

Pros:

• Efficient natural gas operation caters to consistent hot water needs.
• The 5.3 GPM flow rate meets the demands of most households.
• Outdoor installation design is a boon for space-saving and ventilation.
• Built with safety features tailored for external environmental factors.
• Compact and aesthetic design ensures it doesn’t detract from outdoor ambience.
• Rinnai’s legacy assures reliability and product longevity.

Cons:

• Like all gas models, it’s vital to ensure professional installation.
• Periodic maintenance is essential to maintain its peak efficiency outdoors.

 

Navigating the world of natural gas tankless heaters, the Rheem RTG-84DVLN emerges as a beacon of performance, environmental consciousness, and advanced engineering. At its core, it promises to transform the way homeowners perceive water heating – not as a mundane utility but as a luxury. With an impressive 8.4 GPM, it ensures that households, whether large or small, are always enveloped in warmth. Its strength isn’t just its flow rate; it’s the promise of low NOx emissions, ensuring users enjoy the benefits of natural gas without the associated guilt.

Key Features:

• Efficiency: Natural gas-powered, with the added advantage of Low NOx emissions for cleaner operation.
• Flow Rate: A substantial 8.4 gallons per minute, ready to cater to the most demanding households.
• Warranty: Rheem’s warranties stand as industry benchmarks, reflecting their confidence in product reliability.
• Design: A sleek and compact design  of just 14 x 10 x 26 inches ensures it fits seamlessly, irrespective of space constraints.
• Venting: Direct vent system for optimal safety and efficient operation.
• Control System: Intuitive controls, further enhancing user experience.
• Installation: Tailored for a hassle-free setup for indoor use only. Though as with all gas units, professional installation is recommended.

Who Should Buy It?

The Rheem RTG-84DVLN is perfect for homeowners who seek the efficiency of natural gas without compromising on environmental responsibility. Its flow rate makes it suitable for households of varying sizes.

Pros:

• Natural gas operation ensures consistent and efficient heating.
• Low NOx emissions prioritize environmental consciousness.
• Strong 8.4 GPM flow rate guarantees uninterrupted hot water.
• Direct venting enhances safety metrics.
• Elegant design ensures it’s more than just a functional unit.
• Rheem’s reputation offers added peace of mind regarding quality and durability.

Cons:

• As with all gas units, professional installation is paramount.
• Requires regular maintenance to ensure optimal operation.

 

For the discerning homeowner, efficiency and reliability are not mere buzzwords but essentials. The Airthereal Electric Tankless Water Heater 18kW serves as a paragon in this arena. What immediately strikes one about the Airthereal model is its commitment to seamless operation. Beyond its stellar energy-saving capacity, what truly stands out is its minimalist design that oozes modernity. Gone are the days when a shower’s warmth was unpredictable; this unit promises an end to sudden cold spells. With a substantial power of 18kW, envision having a rapid river of warmth at your fingertips. Planning a spa day with multiple fixtures running? Airthereal remains unfazed. Its electric operation means no gas lines, ensuring simpler setup and greater flexibility.

As the quest for efficiency, reliability, and elegance in home appliances continues, the Rheem 18kW 240V Tankless Electric Water Heater stands out. With Rheem’s longstanding reputation in heating solutions, expectations are high – and this model does not disappoint. At its heart, the Rheem model marries a robust performance ethos with sleek design aesthetics. It doesn’t just promise hot water; it guarantees a dependable, interruption-free flow. The heater’s 18kW power ensures a steaming cascade is always ready for you, whether you’re filling a tub or enjoying a rejuvenating shower. And if you’ve multiple fixtures to operate? The Rheem manages it with the kind of ease one expects from a premium product. Its electric nature means fewer installation hassles and a carbon-neutral operation.

Key Features:

• Efficiency: Electric-powered, ensuring consistent heat and a reduction in energy bills.
• Power: A generous 18kW, ensuring hot water is never in short supply.
• Warranty: Rheem’s warranties are among the industry’s best, providing consumers with peace of mind.
• Design: Sleek and compact, a testament to modern engineering that’s built to blend in.
• User Interface: Intuitive controls and an easy-to-read display simplify temperature management.
• Installation: The electric nature means a cleaner install, though professional oversight is advised.
• Eco-Friendly: The all-electric setup ensures you’re making an environment-friendly choice.

Who Should Buy It?

The Rheem 18kW is a no-brainer for homeowners who prioritize consistent performance, ease of use, and an eco-friendly footprint. Suited for medium to large households or those with higher hot water demands.

Pros:

• Trustworthy electric operation that’s both efficient and reliable.
• Modern, space-saving design perfect for today’s homes.
• The 18kW capacity covers a broad range of water needs.
• User-friendly interface for seamless operation.
• The Rheem brand is synonymous with quality and longevity.
• Environmentally conscious choice with zero emissions.

Cons:

• Electric upgrades might be needed in some older homes.
• Professional installation is advisable to ensure optimal functioning.

• Efficiency: Powered by electricity, it offers consistent warmth while keeping energy bills in check.
• Power: A robust 27kW, designed to handle the demanding needs of larger households.
• Warranty: thermomate’s assurance of quality extends through its comprehensive warranty packages.
• Design: A sleek, minimalist appearance ensuring it’s more than just a utility device.
• Control System: User-friendly interface with clear digital displays allows precise temperature settings.
• Installation: Being electric, it offers a straightforward installation process, although professional help is recommended.
• Eco-Friendly: Electric operation translates to zero emissions, making it an eco-responsible choice.
• Who Should Buy It? The thermomate 27kW is an excellent fit for larger households or those with simultaneous multiple hot water demands.

• Superlative electric efficiency ensures both comfort and energy savings.
• Contemporary design complements modern home aesthetics.
• The 27kW output caters generously to intensive water heating needs.
• Digital controls and displays ensure intuitive operation.
• Commitment to eco-friendliness with zero gas emissions.
• A rising brand with a focus on innovation and quality.

• Might necessitate electrical system upgrades in certain homes.
• For optimal longevity and safety, professional installation is preferable.

Stepping into the arena of modern water heating solutions, Rheem’s RTEX-24 24kW 240V Electric Tankless Water Heater emerges as a colossus of functionality and design. It doesn’t just warm water; it envelops one in a cocoon of consistent, luxurious heat. With a laudable 24kW power bracket, the RTEX-24 promises an uninterrupted cascade of warmth, redefining the very essence of comfort. Navigating the demands of multiple fixtures? It’s a breeze for this titan. Its purely electric core ensures a hassle-free setup, a nod to the future of clean, green operation.

Key Features:

• Efficiency: A pure electric heart guarantees optimal heat output with notable energy conservation.
• Power: A formidable 24kW ensures the chill remains a distant memory.
• Warranty: As always, Rheem provides robust warranties that echo their confidence in product durability.
• Design: Boasts a sleek profile, modern yet unobtrusive, fitting seamlessly into varied home decors.
• Control System: Advanced, user-centric controls with clear digital displays for pinpoint temperature modulation.
• Installation: Its electric DNA promises fewer installation hiccups, though expert oversight is suggested.
• Eco-Friendly: A champion of the environment with zero emissions and high efficiency.

Who Should Buy It?

The Rheem RTEX-24 is tailor-made for medium to large households where consistent hot water flow is non-negotiable.

Pros:

• Superior electric efficiency couples comfort with economy.
• State-of-the-art design befits modern living spaces.
• The 24kW power range caters effectively to high-demand scenarios.
• Digital precision ensures effortless temperature regulation.
• A green choice, with its emission-free performance.
• Rheem’s legacy ensures trust in the product’s longevity and efficiency.

Cons:

• Electrical infrastructure in some older homes may need an upgrade.
• While installation is streamlined, it’s wise to lean on professional expertise.