largest tankless water heater that will change your hot water experience

Struggling with hot water shortages? Upgrade to a tankless water heater for endless hot water on demand!

A tankless water heater provides instant hot water whenever you need it, eliminating the wait time associated with traditional systems. Top products like the 14kW Tankless Water Heater Electric and Rheem RTEX-24 offer efficient heating solutions for homes, ensuring you never run out of hot water again.

Standout features include the LED Digital Display on the ORBEK model, which simplifies temperature management, and the compact design of the Rheem unit, making it perfect for smaller spaces. These heaters are not only energy-efficient but also save you money on utility bills.

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

ORBEK 14kW Electric Tankless Water Heater

The ORBEK 14kW Tankless Water Heater Electric is designed to provide an efficient and reliable hot water solution for homes, ideal for households with moderate hot water needs. This compact unit is perfect for users who require hot water for 2-3 points of use simultaneously, making it suitable for small to medium-sized homes or apartments. With dimensions of 14.2″H x 9.5″L x 3.1″W, it takes up significantly less space than traditional tank-style heaters, ensuring it fits comfortably in tight spaces.

This electric tankless water heater boasts an impressive capacity of up to 3.38 GPM, delivering instant hot water within just 3 seconds. Its high energy efficiency is noteworthy, utilizing advanced technology to minimize scale and corrosion, which can lead to lower electricity costs—potentially reducing them by up to 60% compared to conventional models.

Safety is paramount with the ORBEK heater, as it is ETL certified and features comprehensive security protections, including leakage protection, over-temperature protection, and dry-heating protection. The built-in chip ensures stable temperature control, adjusting heating power 20,000 times per second to maintain a consistent water temperature within 1°F.

The LED digital display enhances user experience, allowing for easy temperature adjustments between 86°F and 140°F, while also providing real-time temperature feedback. Installation is straightforward, thanks to its compact design and structural improvements that simplify the process.

Pros

• Instant hot water supply for 2-3 points of use.
• High energy efficiency, potentially reducing electricity costs.
• Advanced safety features for peace of mind.
• Stable temperature control for a comfortable experience.
• Compact size saves space and allows for easy installation.

Cons

• Requires specific electrical setup (240V/60AMP).
• May not meet hot water demands in larger households.

The ORBEK 14kW Tankless Water Heater Electric is an excellent choice for small to medium-sized homes seeking a reliable and efficient hot water solution. Its combination of safety, efficiency, and user-friendly features makes it a standout option for those looking to upgrade from traditional water heaters.

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Rheem 18kW Tankless Electric Water Heater

The Rheem 18kW 240V Tankless Electric Water Heater is designed to provide a continuous supply of hot water, making it ideal for households with high hot water demands. Its compact size and efficient design cater to medium to large homes, ensuring that multiple outlets can be serviced simultaneously. With dimensions that allow for easy installation and a sleek gray finish, this heater not only performs well but also complements modern home aesthetics.

This tankless water heater features advanced specifications, including an external digital thermostatic control with an LED display that offers precise temperature adjustments within ±1 degree accuracy. The self-modulation technology automatically adjusts power output based on hot water demand, ensuring efficiency and cost savings. With a flow rate of up to 4.4 gallons per minute (GPM), it effectively meets the needs of families or individuals who require consistent hot water for showers, laundry, and dishwashing.

One of the significant advantages of the Rheem 18kW Tankless Electric Water Heater is its durability. The copper immersion heating elements are designed to last, and the unit is field serviceable, which means maintenance is straightforward. Additionally, the simple installation process, featuring bottom 3/4 inch NPT water connections, makes it accessible for both professionals and DIY enthusiasts.

Pros

• Efficient self-modulation technology saves energy costs.
• Durable construction with copper heating elements.
• Easy installation with clear instructions.
• Compact design fits well in small spaces.
• Consistent flow rate of up to 4.4 GPM accommodates multiple uses.

Cons

• Initial cost may be higher than traditional water heaters.
• Requires a minimum electrical capacity for optimal performance.

In real-world usability, the Rheem 18kW 240V Tankless Electric Water Heater stands out for its ability to deliver hot water on demand without the wait associated with traditional tank systems. It is best suited for families or individuals who prioritize efficiency and reliability. While the upfront investment is notable, the long-term savings on energy bills and the convenience of endless hot water make it a valuable addition to any home.

Overall, this tankless water heater is perfect for users seeking a reliable, efficient solution to their hot water needs, combining performance with modern technology.

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Rheem 24kW Electric Tankless Water Heater

The Rheem RTEX-24 24kW 240V Electric Tankless Water Heater is designed to provide continuous hot water for your entire home, making it ideal for homeowners seeking an efficient and space-saving solution. Its compact size and sleek gray finish allow it to fit seamlessly into any utility area. Key specifications include a powerful 24kW output, requiring three 40 AMP double pole breakers, and it performs optimally with a recommended 200 AMP household service.

This electric tankless water heater addresses the common problem of running out of hot water, especially during peak usage times. Unlike traditional tank heaters, the Rheem RTEX-24 heats water on demand, ensuring that you have a steady supply whenever needed. Its adjustable digital temperature display allows users to easily set the desired temperature in 1-degree increments, ranging from 80 to 140 degrees Fahrenheit, enhancing the user experience significantly.

Pros

• Continuous hot water: Ideal for large households with high hot water demands.
• Space-saving design: Compact unit that requires no bulky storage tank.
• Energy-efficient: Reduces energy bills compared to traditional water heaters.
• Easy installation: No venting required, simplifying setup.

Cons

• Initial cost: Higher upfront investment compared to tank models.
• Electrical requirements: Requires significant electrical capacity, which may need upgrades.
• Temperature control: May struggle to maintain high temperatures in colder climates.

In terms of performance, the Rheem RTEX-24 stands out with its ability to deliver hot water consistently, making it suitable for families or individuals who frequently use multiple hot water outlets simultaneously. The adjustable temperature settings offer flexibility, although users in colder regions should consider potential limitations in temperature rise based on groundwater temperatures.

Overall, the Rheem RTEX-24 24kW Electric Tankless Water Heater is an excellent choice for homeowners looking for a reliable and efficient hot water solution. Its modern features and design cater to those who prioritize energy savings and convenience, making it a valuable addition to any home.

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Rheem 11kW Electric Tankless Water Heater

Rheem 11kW 240V Tankless Electric Water Heater is designed to provide an efficient and continuous supply of hot water, ideal for households with moderate hot water demands. Its compact size and sleek design make it suitable for various installation locations, including apartments and smaller homes. With dimensions that fit easily into tight spaces, this water heater offers a reliable solution for daily hot water needs.

This model boasts an impressive flow rate of up to 2.68 GPM, ensuring that you can enjoy hot water for showers, dishwashing, and laundry simultaneously without running out. The self-modulating power control adjusts energy usage based on the demand, making it not only efficient but also cost-effective over time. The ON/OFF dial control with an adjustable digital temperature display allows for easy temperature management, enhancing user experience.

Pros

• Provides on-demand hot water, eliminating the need for a bulky tank.
• Self-modulating feature optimizes energy consumption, reducing utility bills.
• Compact design suitable for small spaces.
• Easy-to-use digital display for precise temperature control.

Cons

• May require professional installation, adding to overall costs.
• Performance may vary in larger households with high simultaneous demands.

Performance-wise, the Rheem 11kW tankless water heater stands out with its ability to deliver consistent hot water without interruption. Its durable construction ensures longevity, making it a worthwhile investment for homeowners. However, it is best suited for smaller families or individuals who do not have excessive simultaneous hot water needs, as it may struggle under heavy demand.

Overall, the Rheem 11kW 240V Tankless Electric Water Heater offers excellent value for those seeking a reliable and efficient hot water solution. Its user-friendly features and compact size make it a top choice for moderate hot water requirements, ensuring comfort and convenience in daily routines.

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EcoSmart ECO 11 Electric Tankless Water Heater

The EcoSmart ECO 11 Electric Tankless Water Heater is designed to provide endless on-demand hot water, making it ideal for small households, offices, and low-flow applications. With its compact size of 11.5 x 8 x 3.75 inches, this water heater is perfect for users who need efficient hot water without taking up much space. The unit features a sleek design and is made from durable materials, ensuring longevity and reliability.

This tankless water heater solves the common problem of running out of hot water by continuously monitoring water temperature and controlling flow rates. It delivers consistent hot water within one degree of the selected temperature, enhancing the user experience significantly. The EcoSmart ECO 11 is particularly suitable for users with limited space or those looking to improve energy efficiency in their homes or workplaces.

Pros

• Energy Efficient: With 99% thermal energy efficiency, it only heats water when needed, saving on energy costs.
• Space-Saving Design: Its compact size allows for installation in tight spaces, such as under sinks or on walls.
• Consistent Performance: Provides hot water on demand, ensuring you never run out during crucial moments.
• Easy Installation: Can be installed at the point of use, making it convenient for various applications.

Cons

• Limited Flow Rate: Ideal for low-flow applications, but may not suit larger households needing more hot water simultaneously.
• Higher Initial Cost: While it saves energy, the upfront cost may be higher compared to traditional tank heaters.

The EcoSmart ECO 11 excels in performance, offering reliable and efficient hot water supply tailored to specific needs. Its standout feature is the patented self-modulating technology, which adjusts energy consumption based on water flow. This product is best suited for individuals or small families who prioritize energy savings and space efficiency. However, it may not meet the demands of larger households requiring higher flow rates.

In summary, the EcoSmart ECO 11 Electric Tankless Water Heater is a valuable investment for anyone seeking an efficient, space-saving solution for hot water needs. Its ideal user is someone looking for a compact, energy-efficient option that provides consistent performance without the bulk of traditional water heaters.

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Faq about largest tankless water heater:

1: What is the largest tankless water heater available?

The largest tankless water heater typically offers a flow rate of over 10 gallons per minute, suitable for large households or commercial use.

2: How do I choose the right size tankless water heater?

Consider your peak hot water demand, which includes simultaneous usage of showers, faucets, and appliances, to determine the appropriate size.

3: Are large tankless water heaters energy efficient?

Yes, large tankless water heaters are energy efficient, as they heat water on demand, reducing energy waste compared to traditional tank systems.

4: What are the installation requirements for a large tankless water heater?

Installation requires proper venting, adequate gas or electrical supply, and sufficient space for the unit and maintenance access.

5: How long do tankless water heaters last?

On average, tankless water heaters last 15 to 20 years with proper maintenance, which is longer than traditional tank models.

6: Can a large tankless water heater supply multiple outlets simultaneously?

Yes, a large tankless water heater can supply multiple outlets simultaneously, depending on its flow rate and the water temperature rise needed.

Conclusion

The ORBEK 14kW Electric Tankless Water Heater epitomizes efficiency with its compact design and rapid heating capabilities, making it an ideal choice for those seeking optimal performance in limited spaces. Its advanced technology ensures consistent hot water delivery, catering to diverse household needs.

Conversely, the Rheem 18kW Tankless Electric Water Heater offers unparalleled power and versatility, accommodating larger demands with ease. Its robust features and user-friendly interface position it as a premier solution for expansive households, ensuring a seamless hot water experience.