For homeowners, the best tankless water heater electric ensures endless hot water without high energy bills.
The Rheem 18kW 240V Tankless Electric Water Heater is perfect for modern households seeking efficiency and reliability. This unit provides hot water on demand, making it ideal for busy families or those who love long showers.
From compact apartments to spacious homes, these heaters adapt seamlessly to any setup. Whether you need hot water for a single faucet or multiple outlets, they deliver consistent performance without interruption.
We detail pros, cons, and hidden perks ahead.
Rheem 18kW Tankless Electric Water Heater
The Rheem 18kW 240V Tankless Electric Water Heater stands out with its external digital thermostatic control, featuring an LED display that provides +/- 1 degree accuracy. This precision ensures optimal water temperature, catering to varying hot water demands. Constructed with durable copper immersion heating elements, it boasts a flow rate of up to 4.4 GPM, making it suitable for multiple applications in residential settings. The unit measures compactly, facilitating easy installation with bottom 3/4 inch NPT water connections.
Key Advantages
- Self-modulation technology adjusts power consumption based on real-time hot water needs, enhancing energy efficiency.
- Field serviceable components allow for easy maintenance and repairs, extending product lifespan.
- Constructed from high-quality materials, including 316-grade stainless steel, which resists corrosion and ensures durability.
Limitations
- Not compatible with traditional tank systems, requiring a complete switch to tankless technology.
- Installation may necessitate professional assistance for optimal performance.
Best for outdoor enthusiasts needing a reliable and efficient hot water solution, the Rheem 18kW 240V Tankless Electric Water Heater is ideal for those looking to maximize energy savings while ensuring a steady supply of hot water.
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ORBEK 14kW Electric Tankless Water Heater
The adjustable valve sets the Orbek 14kW Tankless Water Heater apart from its competitors. This unit boasts a compact design with dimensions of 14.2″H x 9.5″L x 3.1″W, making it an ideal choice for homes with limited space. Constructed from durable materials, including 316-grade stainless steel, it resists corrosion and ensures longevity. The heater operates on a 240V/60AMP two-pole breaker and requires 1 set of 6 AWG wires with 1/2″ NPT water connections.
Key Advantages
- The heater provides an impressive flow rate of up to 3.38 GPM, supplying endless hot water for 2-3 points of use simultaneously. This is achieved through advanced water-electricity separation technology, minimizing scale and corrosion while potentially reducing electricity costs by up to 60% compared to traditional tank heaters.
Limitations
- It is not compatible with 120V systems, limiting its installation options in certain homes.
Best for outdoor enthusiasts needing a reliable and efficient hot water solution, the Orbek tankless water heater excels in providing stable temperature control, adjusting heating power 20,000 times per second to maintain water temperature within 1°F. The LED digital display allows for easy temperature adjustments between 86°F and 140°F, ensuring a comfortable shower experience. With comprehensive safety features and easy installation, this unit is a top choice for modern households.
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Stiebel Eltron Tempra 24 Plus Heater
The adjustable valve sets the Stiebel Eltron Tankless Water Heater – Tempra 24 Plus apart from its competitors. This advanced unit boasts a 24kW output and operates at 240V, requiring a minimum recommended electric service of 150 A. The compact design, measuring just 20.2 inches, is crafted from durable materials, including a solid copper heating system that ensures efficient performance.
Key Advantages
- The 316-grade stainless steel construction resists corrosion, enhancing longevity.
- Advanced Flow Control technology maintains consistent water temperature, preventing interruptions during use.
- The eco-friendly design features auto-modulation and a savings monitor, allowing users to track energy savings.
- Easy operation is facilitated by a digital temperature display and preset memory buttons.
Limitations
- Not compatible with gas lines, making it unsuitable for homes without adequate electrical infrastructure.
- Requires professional installation due to its specific electrical requirements.
This model is best for outdoor enthusiasts needing a reliable and efficient hot water solution without the hassle of traditional tanks. Its space-saving design and consistent performance make it ideal for residential use, especially in areas with high hot water demand.
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EcoSmart ECO 11 Electric Tankless Water Heater
The EcoSmart ECO 11 Electric Tankless Water Heater stands out with its patented self-modulating technology, ensuring endless on-demand hot water. This unit is compact, measuring just 11.5 x 8 x 3.75 inches, making it 90% smaller than traditional tank heaters. Constructed from high-quality materials, it features 316-grade stainless steel components that resist corrosion, enhancing its longevity and reliability.
Key Advantages
- With an impressive 99% thermal energy efficiency, the EcoSmart ECO 11 only heats water when needed, reducing energy waste significantly.
Limitations
- Not compatible with high-demand applications; ideal for low-flow scenarios such as small sinks or office breakrooms.
Best for outdoor enthusiasts and small households needing efficient, space-saving hot water solutions, the EcoSmart ECO 11 delivers between 1.3 and 3.1 gallons-per-minute based on inlet water temperature. This makes it an excellent choice for those looking to optimize energy usage without sacrificing performance. Its wall-mounted design adds to its versatility, allowing for installation at the point of use. Overall, the EcoSmart ECO 11 is a robust option for anyone seeking a reliable tankless water heater.
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Rheem RTEX-24 24kW Electric Water Heater
The adjustable valve sets the Rheem RTEX-24 apart in the competitive tankless water heater market. This model features a sleek gray design, with dimensions of 18.5 x 14 x 4.5 inches, making it compact enough for various installations. Constructed from durable materials, including 316-grade stainless steel, it resists corrosion and ensures longevity. The unit operates at 240V and delivers a powerful 24kW output, providing a flow rate of up to 5.9 GPM, which is ideal for simultaneous use in multiple fixtures.
Key Advantages
- The self-modulating power control optimizes energy efficiency, adjusting the power based on demand to reduce energy costs.
Limitations
- Not compatible with traditional water heater systems, requiring a dedicated electrical circuit for optimal performance.
Best for outdoor enthusiasts needing a reliable hot water solution for camping or outdoor showers, the Rheem RTEX-24 is a top choice. Its on-demand heating system guarantees consistent and continuous hot water, making it perfect for those who prioritize efficiency and performance in their outdoor activities.
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Faq about best tankless water heater electric:
1:What is a tankless water heater?
A tankless water heater heats water on demand, providing a continuous supply without storing hot water in a tank.
2:What are the benefits of using an electric tankless water heater?
Electric tankless water heaters are energy-efficient, save space, provide endless hot water, and have lower installation costs compared to gas models.
3:How do I choose the best electric tankless water heater?
Consider factors like flow rate, energy efficiency, size, brand reputation, and warranty when selecting the best electric tankless water heater for your needs.
4:Can a tankless water heater provide enough hot water for my home?
Yes, if sized correctly, a tankless water heater can meet the hot water demands of your home, even during peak usage times.
5:What maintenance does an electric tankless water heater require?
Regular descaling and flushing to remove mineral buildup, checking filters, and ensuring proper ventilation are key maintenance tasks.
6:Are electric tankless water heaters energy-efficient?
Yes, they are more energy-efficient than traditional tank heaters, as they only heat water when needed, reducing energy waste.
7:How long do electric tankless water heaters last?
Typically, electric tankless water heaters last 15 to 20 years with proper maintenance, offering a longer lifespan than traditional models.
Conclusion
Both the Rheem 18kW and ORBEK 14kW electric tankless water heaters exemplify cutting-edge efficiency and performance. The Rheem model stands out for its robust output and reliability, making it ideal for larger households requiring consistent hot water supply. Conversely, the ORBEK, with its compact design and commendable energy savings, caters to smaller spaces while ensuring optimal functionality.
Ultimately, the choice between these two exceptional products hinges on specific household needs and preferences. Each unit reflects an innovative approach to modern water heating, promising enhanced convenience and sustainability for discerning consumers.
