Transform your hot water experience with the Navien electric tankless water heater, delivering endless hot water on demand.
The Navien electric tankless water heater is a game-changer for homeowners seeking efficiency and convenience. With top products like the Stiebel Eltron Tempra 24 Plus, enjoy on-demand hot water that is both eco-friendly and reliable. The Rheem 18kW model offers impressive performance, while the Rheem RTEX-24 ensures consistent temperatures for all your needs.
These heaters are perfect for various applications, whether you’re washing dishes or taking a relaxing shower. Their compact design makes them versatile for any space, and they boast energy-saving features that lower utility bills.
Ready to dive deeper? Our full review will cover all the benefits and features of these top-rated models, helping you make an informed decision about the perfect hot water solution for your home.


Stiebel Eltron Tempra 24 Plus Heater
Tired of running out of hot water during your showers? The Stiebel Eltron Tankless Water Heater – Tempra 24 Plus fixes it with its advanced flow control technology. This innovative feature automatically maintains your desired water temperature, ensuring that your hot showers remain uninterrupted, even during peak demand.
Why It Works
- Continuous flow eliminates the frustration of sudden temperature drops, providing a consistent hot water experience.
- Space-saving design means it fits seamlessly into your home without the need for bulky tanks or venting, making it perfect for smaller spaces.
- Energy efficiency is enhanced with auto-modulation, allowing you to save on energy costs while enjoying endless hot water.
- Easy operation with a digital temperature display and preset buttons simplifies your experience, making it user-friendly for everyone.
Trade-offs
- Premium price may be a consideration, but the long-term savings on energy bills and the reliability of the product justify the investment.
Overall, the Stiebel Eltron Tempra 24 Plus is worth it for frequent users who value comfort, efficiency, and convenience in their hot water needs. With its robust features and warranties, it stands out as a top choice for modern households.
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Rheem 18kW Electric Tankless Water Heater
Tired of running out of hot water during your showers? The Rheem 18kW 240V Tankless Electric Water Heater fixes it with its advanced self-modulation feature that adjusts power to meet your hot water demand efficiently.
Why It Works
- Flow rate of up to 4.4 GPM ensures you have a consistent supply of hot water for multiple outlets simultaneously.
- Durable copper immersion heating elements provide longevity and reliability, eliminating the need for frequent replacements.
- External digital thermostatic control with LED display allows for precise temperature settings within +/- 1 degree, ensuring optimal comfort.
Trade-offs
- Requires a 240V electrical connection, which may necessitate additional installation costs if your home isn’t already equipped.
- Premium price compared to traditional water heaters, but this investment pays off in energy savings and durability over time.
Overall, the Rheem 18kW Tankless Electric Water Heater is worth it for frequent users who value a steady supply of hot water without the wait. Its efficient design and reliable performance make it a smart choice for any household looking to upgrade their hot water system.
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Rheem RTEX-24 Electric Tankless Water Heater
Tired of running out of hot water during your showers? The Rheem RTEX-24 24kW Electric Tankless Water Heater fixes it with its proven performance, providing continuous hot water for your entire home. Say goodbye to the inconvenience of waiting for a tank to refill!
Why It Works
- Continuous hot water ensures you’ll never have to endure a cold shower again, no matter how many people are using hot water simultaneously.
- Easily adjustable ON/OFF dial control with a digital temperature display allows you to set your desired temperature in precise 1-degree increments, ensuring comfort for every user.
- Space-saving design means you can install it anywhere without sacrificing valuable storage room, making it perfect for smaller homes.
- Energy efficient operation not only saves you money on utility bills but also reduces your carbon footprint.
Trade-offs
- Premium price compared to traditional tank heaters, but the long-term savings and convenience make it a worthwhile investment.
- Requires 3 x 40 AMP Double Pole Breakers and a 200 AMP household service, so ensure your home can accommodate these electrical requirements.
Worth it for frequent users who value uninterrupted hot water and energy efficiency. The Rheem RTEX-24 is a reliable solution that meets the demands of modern living.
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ORBEK 14kW Electric Tankless Water Heater
Tired of running out of hot water during your showers? The Orbek 14kW Tankless Water Heater fixes it with its instant hot water supply feature. This electric heater delivers up to 3.38 GPM of endless hot water, ensuring you and your family enjoy comfortable showers simultaneously.
Why It Works
- High energy efficiency reduces electricity costs by up to 60%, solving the problem of high utility bills associated with traditional tank heaters.
Trade-offs
- Premium price, but with its long-lasting performance and energy savings, it proves to be a worthwhile investment.
The Orbek model is not only efficient but also features a built-in chip that adjusts the heating power 20,000 times per second, ensuring stable water temperature control within 1°F. This means no more sudden cold shocks while showering. The LED digital display makes it easy to monitor and adjust the temperature to your liking, providing a user-friendly experience.
Installation is straightforward, as the compact design fits easily into tight spaces, making it ideal for modern homes. Additionally, the comprehensive security features, including leakage and over-temperature protection, provide peace of mind.
Overall, the Orbek 14kW Tankless Water Heater is worth it for frequent users who value efficiency and reliability in their hot water supply.
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6699 Tankless Water Heater Flushing Kit
Tired of low water pressure and inefficient tankless water heater maintenance? The 6699 Tankless Water Heater Flushing Kit fixes it with its comprehensive cleaning solution. This kit includes a 1/6HP submersible sump pump, two adapters, and all necessary hoses, making it easy to flush and maintain your tankless water heater.
Why It Works
- Easy connection to tankless isolation valves using the included hoses prevents leaks and ensures a thorough clean.
- Submersible sump pump with a 1100GPH flow rate quickly removes debris, enhancing water pressure and heater efficiency.
- Ergonomic bucket lid opener simplifies the process of accessing cleaning solutions, making maintenance less of a hassle.
Trade-offs
- Initial investment may seem high, but the longevity and efficiency gained from regular maintenance make it worthwhile.
This flushing kit is designed for homeowners who want to extend the life of their tankless heaters while maintaining optimal performance. It’s particularly beneficial for those who frequently use hot water and need a reliable solution to prevent sediment buildup. Worth it for frequent users, the 6699 Tankless Water Heater Flushing Kit is a smart investment in your home’s plumbing system.
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Faq about Navien Electric Tankless Water Heater:
1: What is a Navien electric tankless water heater?
A Navien electric tankless water heater provides on-demand hot water without a storage tank, offering energy efficiency and space savings.
2: How does a Navien electric tankless water heater work?
It heats water directly as it flows through the unit, activating only when hot water is needed, ensuring no energy is wasted.
3: What are the benefits of using a Navien electric tankless water heater?
Benefits include continuous hot water supply, energy savings, compact design, and reduced risk of leaks compared to traditional tanks.
4: How do I install a Navien electric tankless water heater?
Installation should be performed by a qualified professional to ensure proper setup and compliance with local codes.
5: What maintenance is required for a Navien electric tankless water heater?
Regular maintenance includes descaling the unit annually and checking for any leaks or electrical issues to ensure optimal performance.
6: What is the lifespan of a Navien electric tankless water heater?
Typically, these units last around 20 years with proper maintenance, significantly longer than traditional tank heaters.
7: Are Navien electric tankless water heaters energy efficient?
Yes, they are highly energy efficient, often achieving energy factor ratings of 0.90 or higher, reducing utility bills.
Conclusion
Both the Stiebel Eltron Tempra 24 Plus and Rheem 18kW Electric Tankless Water Heater exemplify cutting-edge technology in efficient water heating solutions. The Tempra 24 Plus stands out for its advanced flow control and consistent temperature maintenance, catering to high-demand households with remarkable precision.
Conversely, the Rheem 18kW model is lauded for its compact design and user-friendly interface, making it an excellent choice for those seeking reliability and ease of use. Ultimately, these products represent the pinnacle of modern engineering, offering unparalleled performance and energy efficiency for discerning consumers.




