Looking for the best brand of electric water heater? Rheem offers top-tier options for instant hot water solutions.
When it comes to reliable hot water solutions, the Rheem 18kW 240V Tankless Electric Water Heater stands out for its efficiency and compact design. Perfect for homes needing consistent hot water, it ensures you never run out. Another excellent option is the Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, known for its powerful performance and energy-saving features.
These heaters are ideal for a variety of applications, whether it’s for residential use or small businesses. With features like LED digital displays and ETL certification, they provide versatility and peace of mind. Their ability to deliver hot water on demand makes them a perfect fit for any setting.
In this review, we’ll delve deeper into the benefits and features of these top Rheem products. You’ll learn about their efficiency, installation processes, and which model is best for your needs. Get ready to find the perfect electric water heater for your home!


Rheem 18kW Tankless Electric Water Heater
Rheem 18kW 240V Tankless Electric Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Flow rate up to 4.4 GPM ensures a steady supply of hot water for multiple outlets.
- Self-modulating technology optimizes energy usage based on demand, saving on utility bills.
- Durable copper immersion heating elements provide longevity and reliable performance.
- Easy installation with bottom 3/4 inch NPT water connections simplifies setup.
- External digital thermostatic control with LED display allows for precise temperature adjustments.
Drawbacks
- No dishwasher-safe parts may require manual cleaning, which can be inconvenient.
A practical pick for small spaces, the Rheem 18kW Tankless Electric Water Heater is designed to deliver efficient hot water without the bulk of traditional tanks. Its compact size and advanced features make it suitable for apartments, tiny homes, or any location where space is at a premium. With a solid warranty and reliable performance, it stands out as a top choice in the electric water heater market.
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Rheem 24kW Electric Tankless Water Heater
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Provides continuous hot water for the whole home, ensuring comfort and convenience.
- Easily adjustable ON/OFF dial control with a digital display allows temperature settings from 80-140 degrees F in 1-degree increments.
- Efficient design saves space and energy, making it a smart choice for modern homes.
- Holds 5L without tipping, ensuring stability during use.
Drawbacks
- No dishwasher-safe parts, requiring careful cleaning and maintenance.
This unit is a practical pick for small spaces where traditional water heaters may not fit. Its compact design and efficient operation make it suitable for apartments or homes looking to maximize space while ensuring a steady supply of hot water. Ideal for those who value energy efficiency and modern convenience.
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ORBEK 14kW Electric Tankless Water Heater
14kW Tankless Water Heater Electric: 14.2”H x 9.5”L x 3.1”W, ETL certified, 2-year warranty.
Benefits
- Provides up to 3.38 GPM of endless hot water for 2-3 points of use simultaneously.
Drawbacks
- Requires a 240V/60AMP two-pole breaker for installation.
The Orbek 14kW Tankless Water Heater is designed for efficiency and convenience. It delivers instant hot water, reaching your desired temperature in just 3 seconds. With a high energy efficiency rating, it can reduce electricity costs by up to 60% compared to traditional tank heaters. The built-in chip ensures stable temperature control, adjusting heating power 20,000 times per second to keep the water temperature within 1°F.
Safety is a priority with this model. It features multiple advanced protections, including leakage, over-temperature, and dry-heating protections. The LED digital display allows for easy temperature adjustments between 86°F and 140°F, providing real-time updates on water temperature.
Installation is straightforward, thanks to its compact size that saves over 50% of space compared to traditional models. However, potential buyers should note that it requires specific electrical setup, which may necessitate professional assistance.
A practical pick for small spaces, this tankless water heater is ideal for those seeking reliable hot water on demand without the bulk of traditional systems.
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EcoSmart ECO 11 Electric Tankless Water Heater
EcoSmart ECO 11 Electric Tankless Water Heater: 11.5” x 8” x 3.75”, ABS plastic, 2-year warranty.
Benefits
- Provides endless hot water with a flow rate of 1.3 to 3.1 gallons-per-minute, depending on inlet temperature.
Drawbacks
- Requires 54 amps for operation, which may necessitate an electrical upgrade in some homes.
The EcoSmart ECO 11 is designed for efficiency, boasting a 99% thermal energy efficiency rating. This means it only heats water when needed, unlike traditional tank heaters that maintain temperature continuously. This feature can lead to significant energy savings over time.
Installation is straightforward, as it can be mounted on a wall or used at point-of-use locations, making it perfect for small spaces like bathrooms or office breakrooms. Its compact size is a major advantage for those with limited installation options.
However, potential buyers should be aware that the unit is not suitable for larger households requiring simultaneous hot water access. It may also necessitate electrical upgrades due to its amperage draw, which can be a drawback for some users.
Overall, the EcoSmart ECO 11 is a practical pick for small spaces and individuals looking for an energy-efficient solution to their hot water needs.
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Rheem 240V RTEX-13 Tankless Water Heater
Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater: 13kW model, durable copper heating elements, 99.8% energy efficient, external adjustable digital thermostatic control.
Benefits
- Flow rate: up to 3.17 GPM, providing ample hot water for multiple applications.
Drawbacks
- Requires professional installation for optimal performance.
The Rheem RTEX-13 is designed for efficiency and convenience, making it a solid choice for residential use. Its compact design allows it to fit easily in small spaces, which is ideal for apartments or homes with limited room. The external digital thermostatic control offers precise temperature adjustments, allowing users to set the desired heat level within 1°F increments. This feature ensures consistent hot water delivery tailored to individual needs.
One of the standout features is its impressive flow rate of up to 3.17 GPM, which is sufficient for simultaneous use in multiple fixtures. This means you can run a shower and a faucet without a noticeable drop in water temperature or pressure. The unit’s self-modulating power control optimizes energy use, ensuring that you’re only using the amount of energy necessary for your hot water needs.
However, potential buyers should note that professional installation is recommended to ensure proper setup and functionality. Overall, the Rheem RTEX-13 is a practical pick for small spaces looking for an efficient and reliable hot water solution.
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Faq about best brand of electric water heater:
1:What is the best brand of electric water heater?
The best brands include Rheem, A.O. Smith, and Bradford White, known for reliability and efficiency.
2:How do I choose an electric water heater brand?
Consider factors like energy efficiency, warranty, customer reviews, and the brand’s reputation in the market.
3:Are there energy-efficient electric water heater brands?
Yes, brands like EcoSmart and Stiebel Eltron offer energy-efficient models that can reduce utility bills.
4:What size electric water heater do I need?
Choose a size based on your household’s hot water demand, typically ranging from 30 to 80 gallons.
5:How long do electric water heaters last?
Electric water heaters typically last 10 to 15 years with proper maintenance.
6:What is the average cost of an electric water heater?
The average cost ranges from $300 to $1,500, depending on the brand, size, and features.
7:Do electric water heaters require maintenance?
Yes, regular maintenance like flushing the tank and checking the anode rod is essential for longevity.
Conclusion
The Rheem 18kW Tankless Electric Water Heater exemplifies efficiency and compact design, making it an ideal choice for smaller households seeking consistent hot water without the bulk of traditional tanks. Its advanced technology ensures optimal energy savings while delivering reliable performance.
Conversely, the Rheem 24kW Electric Tankless Water Heater caters to larger demands, providing robust capacity and rapid heating capabilities. This model stands out for its superior flow rate, accommodating simultaneous usage across multiple outlets, thus enhancing convenience and comfort for larger families.





