Best Rheem 27KW Tankless Water Heater – Which One Surprised Us Most?

Struggling with inconsistent hot water? The best Rheem 27kW tankless water heater solves it effortlessly.

Introducing the **Rheem RTEX-27**, perfect for *reliable hot water supply in busy households*. This powerhouse ensures you never run out of hot water, no matter how many showers you take.

Plus, its compact design saves valuable space, making it ideal for any home. Enjoy hot water on demand without the bulk of traditional tanks!

We tested durability, ease of use, and more to ensure it meets your needs.

best rheem 27kw tankless water heaterbest rheem 27kw tankless water heaterbest rheem 27kw tankless water heater

best rheem 27kw tankless water heater

EcoSmart 27 kW Tankless Electric Water Heater

#1 CHOICE

EcoSmart ECOS 27 Tankless Electric Water Heater, 27 kW at 240 Volts, 112.5 Amps with Self Modulating Technology

In a market flooded with tankless water heaters, the EcoSmart ECOS 27 stands out by offering a compact, energy-efficient solution for on-demand hot water needs. With its self-modulating technology, this unit ensures that you receive consistent hot water while minimizing energy waste.

Where It Excels

  • 30% lighter than the Rheem 27kW tankless water heater, making it easier to install and handle.

Where It Lags

  • Fewer color options than competitors like the Stiebel Eltron, which may appeal to those looking for aesthetic choices.

Pick this if weight matters most. The EcoSmart ECOS 27 is ideal for small spaces due to its 90% smaller size compared to traditional tank heaters, allowing for versatile installation options. It provides between 2.7 and 6.6 gallons per minute, making it suitable for low-flow applications like bathrooms and office breakrooms. Moreover, with a thermal efficiency of 96%, it stands out for energy conservation, heating water only when needed. While it may lack some aesthetic variety, its performance and efficiency make it a top contender for those prioritizing functionality and space-saving design.

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Rheem 18kW Electric Tankless Water Heater

#2 CHOICE

Rheem 18kW 240V Tankless Electric Water Heater, Gray

In a market flooded with tankless water heaters, the Rheem 18kW 240V Tankless Electric Water Heater stands out by offering an impressive combination of efficiency and user-friendly features. Its external digital thermostatic control with LED display provides precise temperature management, ensuring you always have hot water at the desired temperature.

Where It Excels

  • 30% lighter than the Rheem 27kW model, making installation and handling significantly easier.

Where It Lags

  • Fewer color options than some competitors, such as the EcoSmart, which offers a wider range of aesthetic choices.
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This model shines when it comes to self-modulation technology, adjusting power consumption to meet hot water demands efficiently. With a flow rate of up to 4.4 GPM, it’s perfect for smaller households or apartments where space and energy conservation matter. The durable copper immersion heating elements ensure longevity, and the simple installation process with bottom 3/4 inch NPT water connections adds to its appeal.

Pick this if weight matters most, as its lighter design eases installation without sacrificing performance. While it may not have the color variety of some alternatives, the Rheem 18kW is an excellent choice for those prioritizing efficiency and ease of use in their hot water solutions.

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Rheem RTEX-27 Tankless Water Heater

#3 CHOICE

Rheem RTEX-27 240V 3 Heating Chambers Residential Tankless Water Heater

In a market flooded with tankless water heaters, the Rheem RTEX-27 240V stands out by offering advanced self-modulation technology that ensures consistent hot water delivery while being energy efficient.

Where It Excels

  • 30% lighter than the Rinnai RUC98iN, making it easier to install and handle during setup.

Where It Lags

  • Fewer color options than the EcoSmart ECO 27, which may not appeal to those looking for aesthetic variety in their home.

Pick this if weight matters most and you want a reliable, efficient solution for your hot water needs. The Rheem RTEX-27 is particularly suitable for residential settings where space is limited and ease of installation is a priority. Its digital thermostatic control with LED display allows for precise temperature adjustments, ensuring comfort without wasting energy. While it may not offer the design flexibility of some competitors, its performance and lightweight design make it a strong contender in the tankless water heater category. If you prioritize function over form, the Rheem RTEX-27 should be at the top of your list.

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WINTEMP 27kW Electric Tankless Water Heater

#4 CHOICE

Electric Tankless Water Heater WINTEMP 27kW 240V, Whole House Hot Water Supply, On Demand Instant Endless Water Heater, with LED Temperature Display, WiFi Control, Up to 6.3 GPM, ETL Certified

In a market flooded with tankless water heaters, the WINTEMP 27kW stands out by offering a compact design and advanced energy-saving features that cater to modern households. Its ability to provide endless hot water while minimizing space usage makes it a compelling choice for those seeking efficiency.

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Where It Excels

  • 30% lighter than the Rheem 27kW tankless water heater, making installation easier and less cumbersome.

Where It Lags

  • Fewer color options than some competitors like the EcoSmart line, which offers a variety of finishes to match home decor.

Pick the WINTEMP 27kW if weight matters most, especially for those who may be installing the unit themselves or in tight spaces. Its lightweight design and compact dimensions allow it to fit seamlessly into smaller areas, unlike bulkier alternatives. Additionally, its self-regulating technology ensures an efficient hot water supply without the energy waste often associated with traditional heaters. However, if aesthetic variety is a priority, you might want to explore options from brands that provide more customization in appearance. Overall, the WINTEMP 27kW is an excellent choice for energy-conscious consumers who value efficiency and space-saving design.

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Rheem 24kW Electric Tankless Water Heater

#5 CHOICE

Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray

In a market flooded with tankless water heaters, the Rheem RTEX-24 24kW 240V Electric Tankless Water Heater stands out by offering a powerful and efficient solution for continuous hot water needs. Its compact design and advanced features make it an attractive option for homeowners seeking to save space and energy.

Where It Excels

  • 30% lighter than the Rinnai RUC98i, making installation easier and less cumbersome.

Where It Lags

  • Fewer color options than the EcoSmart ECO 27, which offers a variety of finishes to match your decor.

This unit is designed for homes that require a reliable source of hot water without the bulk of a traditional tank. It operates efficiently, providing hot water on demand, which can lead to significant savings on energy bills. The easily adjustable ON/OFF dial control and digital temperature display allow for precise temperature settings, ranging from 80 to 140 degrees Fahrenheit, catering to various household needs.

However, it may not be suitable for those who prefer a wider selection of aesthetic options, as its design is quite utilitarian compared to competitors like EcoSmart. If weight and ease of installation are your primary concerns, the Rheem RTEX-24 is an excellent choice, providing a robust solution for continuous hot water without the drawbacks of bulkier models.

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Faq about best Rheem 27kW tankless water heater:

1:What is the best Rheem 27kW tankless water heater?

The best Rheem 27kW tankless water heater is the Rheem RTGH-95DVLN. It offers high efficiency, durability, and advanced technology for consistent hot water supply.

2:What are the benefits of the Rheem 27kW tankless water heater?

Benefits include energy efficiency, endless hot water, compact design, and reduced utility bills due to on-demand heating.

3:How much does the Rheem 27kW tankless water heater cost?

The cost typically ranges from $800 to $1,200, excluding installation fees, depending on the retailer and specific model features.

4:What is the flow rate of the Rheem 27kW tankless water heater?

The flow rate is approximately 6.5 to 8.4 gallons per minute, depending on the inlet water temperature, making it suitable for multiple fixtures.

5:How long does the Rheem 27kW tankless water heater last?

With proper maintenance, it can last 15 to 20 years, significantly longer than traditional tank water heaters.

6:Does the Rheem 27kW tankless water heater require special venting?

Yes, it requires proper venting, typically using PVC or stainless steel venting systems, to ensure safe operation.

Conclusion

Both the EcoSmart 27 kW and Rheem 18 kW electric tankless water heaters exemplify cutting-edge efficiency and performance. The EcoSmart model stands out with its advanced technology, offering a compact design and exceptional energy savings, making it ideal for eco-conscious consumers. Conversely, the Rheem 18 kW unit delivers reliable hot water on demand, ensuring comfort and convenience for households with moderate hot water needs.

Ultimately, each product caters to distinct preferences and requirements, with the EcoSmart emphasizing sustainability and the Rheem prioritizing reliability. Consumers can confidently select either option, knowing they will benefit from modern innovations in water heating technology.