best tankless water heater that will change your daily routine
Did you know that 70% of homeowners prefer tankless water heaters for energy efficiency?
That’s why the Rheem 18kW 240V Tankless Electric Water Heater stands out with its on-demand hot water capabilities, ensuring you never run out during peak usage.
Few know its compact design saves valuable space, making it perfect for smaller homes or apartments.
Our review covers long-term value vs. rivals, helping you make an informed decision for your home.
Rheem 18kW Electric Tankless Water Heater
The Rheem 18kW 240V Tankless Electric Water Heater stands out with its external digital thermostatic control, featuring a precise LED display that ensures accuracy within +/- 1 degree. This model is constructed from durable materials, including copper immersion heating elements, which enhance its longevity and efficiency. With dimensions optimized for compact spaces, it delivers a flow rate of up to 4.4 GPM, making it suitable for various household needs.
Key Advantages
- The self-modulation technology intelligently adjusts power to meet hot water demand, ensuring energy efficiency and consistent performance.
- Its 316-grade stainless steel components resist corrosion, extending the product’s lifespan.
- Simple installation is facilitated by bottom 3/4 inch NPT water connections and a threaded design for easy replacement.
Limitations
- Not compatible with gas lines or traditional tank systems, which may limit options for some users.
This water heater is best suited for outdoor enthusiasts and households requiring an efficient, on-demand hot water solution without the bulk of traditional tanks. Its advanced features make it a top choice for those prioritizing performance and reliability in their hot water systems.
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EcoSmart ECO 11 Electric Tankless Water Heater
The adjustable valve sets the EcoSmart ECO 11 Electric Tankless Water Heater apart from its competitors. This innovative feature allows for precise control over water temperature, ensuring a consistent hot water supply. Constructed with high-quality materials, including 316-grade stainless steel, the unit is designed to resist corrosion and extend its lifespan. With compact dimensions of 11.5 x 8 x 3.75 inches, it is 90% smaller than traditional tank heaters, making it perfect for installations in tight spaces.
Key Advantages
- Energy Efficient: With a thermal efficiency of 99%, it only heats water on demand, significantly reducing energy consumption compared to conventional tank heaters.
- Self-Modulating Technology: Continuously monitors water temperature and flow rates, maintaining performance within 1 degree of the selected temperature.
- Versatile Installation: Can be mounted on the wall or used at point-of-use, enhancing accessibility and convenience.
Limitations
- Not compatible with multiple simultaneous high-flow applications; ideal for low-flow needs only.
Best for outdoor enthusiasts needing a reliable, space-saving solution for hot water in remote locations, the EcoSmart ECO 11 offers an efficient and effective option for various low-demand scenarios.
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Rheem RTEX-24 Electric Tankless Water Heater
The adjustable valve sets the Rheem RTEX-24 24kW 240V Electric Tankless Water Heater apart from its competitors. This unit is constructed from durable materials, featuring a robust housing that ensures longevity. It measures 17.5 x 18.5 x 3.625 inches, making it compact enough for various installation scenarios.
Key Advantages
- The 316-grade stainless steel components resist corrosion, ensuring a long lifespan even in harsh conditions.
Limitations
- Not compatible with 120V systems or homes lacking the necessary 200 AMP service, which may limit its usability in some residences.
With an ON/OFF dial control and an adjustable digital temperature display, the Rheem RTEX-24 allows for precise temperature adjustments in 1-degree increments, ranging from 80 to 140 degrees Fahrenheit. This feature is particularly beneficial for users who require specific water temperatures for various applications. The unit provides continuous hot water, making it ideal for households with high demand.
Best for outdoor enthusiasts needing a reliable and efficient hot water solution, the Rheem RTEX-24 is designed for those who prioritize performance and energy savings while enjoying the convenience of tankless technology. Its space-saving design and energy efficiency make it a valuable addition to any home looking to optimize hot water delivery.
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Rinnai RX199iN Tankless Water Heater
The adjustable valve sets the Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater apart from its competitors. This unit is designed for both indoor and outdoor installation, powered by either propane or natural gas, thanks to its innovative Smart Sense gas control system. With dimensions of 18.5 x 13.8 x 26.5 inches and made from 316-grade stainless steel, it resists corrosion while maintaining a compact footprint.
Key Advantages
- The heater delivers an impressive flow rate of up to 11.1 GPM, capable of supporting seven fixtures simultaneously, making it ideal for large households.
Limitations
- It is not compatible with certain older plumbing systems, which may require additional modifications for installation.
Best for outdoor enthusiasts needing a reliable and efficient hot water solution, the Rinnai RX199iN combines smart technology with high energy efficiency, boasting a UEF of .98. Its modern design features an easy-to-use interface and a Quick Flush feature for simplified maintenance. While professional installation is recommended, the unit’s WiFi control capability (via the Controlr module) enhances user convenience. Overall, this tankless water heater is a robust choice for those seeking endless hot water supply without the bulk of traditional systems.
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ORBEK 14kW Electric Tankless Water Heater
The adjustable valve sets the Orbek 14kW Tankless Water Heater apart, allowing users to customize their hot water experience. This unit operates at 240 volts and is designed to provide up to 3.38 GPM, making it suitable for 2-3 points of use simultaneously. Constructed from high-quality materials, it features a compact size of 14.2″H x 9.5″L x 3.1″W, saving over 50% of space compared to traditional tank water heaters.
Key Advantages
- The use of **316-grade stainless steel** resists corrosion, enhancing the unit’s durability.
- High energy efficiency is achieved through water-electricity separation, potentially reducing electricity costs by up to 60% compared to conventional models.
- Advanced safety features, including leakage protection and over-temperature protection, ensure reliable operation.
- The built-in chip adjusts heating power 20,000 times per second, maintaining stable water temperature within 1°F.
- The LED digital display provides real-time temperature readings and easy adjustments between 86°F and 140°F.
Limitations
- Not compatible with traditional tank-style water heaters, requiring specific installation requirements.
Best for outdoor enthusiasts needing an efficient, space-saving solution for hot water on demand, the Orbek 14kW Tankless Water Heater is a robust choice for modern households seeking reliability and performance.
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Faq about best tankless water heater:
1:What is a tankless water heater?
A tankless water heater heats water on demand, providing a continuous supply without the need for a storage tank.
2:What are the benefits of a tankless water heater?
Benefits include energy efficiency, space-saving design, longer lifespan, and endless hot water supply.
3:How do I choose the best tankless water heater?
Consider factors like flow rate, energy efficiency ratings, fuel type, and installation requirements to find the best fit for your needs.
4:Are tankless 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 is the average lifespan of a tankless water heater?
The average lifespan is 15 to 20 years, which is longer than conventional tank water heaters.
6:Do tankless water heaters require maintenance?
Yes, regular maintenance, such as descaling, is recommended to ensure optimal performance and longevity.
7:Can I install a tankless water heater myself?
While DIY installation is possible, professional installation is recommended for safety and compliance with local codes.
Conclusion
The Rheem 18kW Electric Tankless Water Heater exemplifies efficiency and reliability, catering to households seeking consistent hot water supply with minimal energy consumption. Its robust performance and advanced technology position it as a premier choice for discerning consumers.
Conversely, the EcoSmart ECO 11 Electric Tankless Water Heater offers an eco-friendly alternative, boasting an impressive capacity while promoting sustainability. Its compact design and innovative features make it ideal for smaller spaces, appealing to environmentally conscious users.