Are you tired of running out of hot water during showers? The Rheem tankless water heaters provide endless hot water on demand.
The Rheem 18kW 240V Tankless Electric Water Heater and the Rheem RTEX-24 24kW model are designed for efficiency and convenience. These units save space and energy while delivering consistent hot water, making them perfect for busy households.
In our full review, we break down performance, durability, and more to help you choose the right Rheem model for your needs.
Rheem 18kW Tankless Electric Water Heater
Rheem 18kW 240V Tankless Electric Water Heater: 18” long, durable copper, 5-year warranty.
Benefits
- Flow rate up to 4.4 GPM ensures a steady supply of hot water for multiple outlets.
- Self-modulation technology adjusts power to meet hot water demand efficiently.
- External digital thermostatic control with LED display allows for precise temperature settings (+/- 1 degree accuracy).
- Simple installation with bottom 3/4 inch NPT water connections makes setup straightforward.
Drawbacks
- No built-in storage means continuous hot water is available only when in use.
- Requires a 240V electrical supply, which may necessitate additional electrical work.
This unit is ideal for small spaces where traditional water heaters are impractical. Its compact design and efficient heating capabilities make it a practical choice for those looking to save space without sacrificing performance.
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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 you never run out during peak usage.
- Easily adjustable ON/OFF dial control with a digital temperature display allows for precise temperature settings from 80-140 degrees F.
- Space-saving design fits well in small areas, making it ideal for homes with limited installation space.
- Energy-efficient operation saves money on utility bills compared to traditional tank heaters.
- Requires no venting, simplifying installation and reducing additional costs.
Drawbacks
- No dishwasher-safe parts, which may complicate cleaning for some users.
- Requires 3 x 40 AMP Double Pole Breakers, necessitating a compatible electrical setup in your home.
- Ground water temperature can affect performance, so it may not be suitable for all geographic locations.
A practical pick for small spaces, the Rheem RTEX-24 combines efficiency with convenience, making it a solid choice for homeowners seeking reliable hot water without the bulk of traditional heaters.
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Rheem 240V Tankless Water Heater
Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- 99.8% energy efficient for reduced utility bills.
- Flow rate up to 3.17 GPM ensures sufficient hot water for multiple outlets.
- External adjustable digital thermostatic control with LED display for precise temperature management.
- Self-modulating power control optimizes energy usage based on demand.
- Simple installation with included 1/2 NPT adapters and side compression connections.
Drawbacks
- No dishwasher-safe parts may require careful handling during cleaning.
This tankless water heater is a practical pick for small spaces, providing efficient hot water without the bulk of a traditional tank. Its compact design and high efficiency make it suitable for homes with limited space while ensuring a continuous supply of hot water for various needs. Ideal for those looking to upgrade their water heating system, the Rheem RTEX-13 offers modern features that enhance convenience and energy savings.
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Rheem 11kW Electric Tankless Water Heater
Rheem 11kW 240V Tankless Electric Water Heater: 11kW model, self-modulating power control, ON/OFF dial control with adjustable digital temperature display, flow rate up to 2.68 GPM, side 1/2″ NPT water connections.
Benefits
- Provides consistent and continuous hot water for multiple applications, making it ideal for homes with high hot water demand.
Drawbacks
- Requires professional installation, which may add to the overall cost.
This model is a practical pick for small spaces where traditional tank water heaters are impractical. Its compact design allows for installation in tight areas, maximizing available space. The self-modulating power control ensures energy efficiency, adjusting the energy used based on the flow rate and temperature setting, which can lead to lower utility bills over time.
With a flow rate of up to 2.68 GPM, it efficiently meets the hot water needs of a small household without the worry of running out. However, potential buyers should note that the unit requires professional installation, which may deter some DIY enthusiasts. Overall, the Rheem 11kW Tankless Electric Water Heater is a solid investment for those looking to save space and enjoy an endless supply of hot water.
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Rheem RTGH 8.4 GPM Tankless Water Heater
Rheem RRTGH84DVLN3701171 Rheem RTGH Series: 12” long, stainless steel, 1-year labor warranty, 15-year heat exchanger warranty, 5-year parts warranty.
Benefits
- Flow rate of 0.4 – 8.4 GPM ensures ample hot water supply for multiple outlets.
Drawbacks
- Requires professional installation, which can add to initial costs.
This tankless water heater is designed for efficiency and convenience. With a temperature range from 100°F to 140°F, it caters to various household needs, making it versatile for different applications. The electric ignition system enhances reliability, ensuring hot water is available on demand. Its compact size, measuring 17-11/16 inches in width, makes it ideal for small spaces where traditional tank heaters may not fit.
While the Rheem RTGH Series offers impressive flow rates and energy savings, it’s important to note that it requires professional installation. This can be a drawback for DIY enthusiasts looking to save on costs. Additionally, the unit is not designed for outdoor use, limiting its placement options.
Overall, the Rheem RRTGH84DVLN3701171 is a practical pick for small spaces, providing reliable hot water without the bulk of a traditional tank. Its warranties also offer peace of mind, making it a sound investment for homeowners.
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Faq about Rheem Tankless Water Heater:
1: What is a Rheem tankless water heater?
A Rheem tankless water heater provides hot water on demand without the need for a storage tank, improving energy efficiency and saving space.
2: How does a Rheem tankless water heater work?
It heats water directly as it flows through the unit, using gas or electricity, ensuring you have a continuous supply of hot water.
3: What are the benefits of using a Rheem tankless water heater?
Benefits include energy savings, longer lifespan, endless hot water, and reduced space requirements compared to traditional water heaters.
4: How do I install a Rheem tankless water heater?
Installation should be performed by a qualified professional to ensure safety and compliance with local codes.
5: Are Rheem tankless water heaters energy efficient?
Yes, they are highly energy efficient, often providing savings on energy bills due to their on-demand heating capability.
6: What maintenance is required for a Rheem tankless water heater?
Regular descaling and filter cleaning are recommended to maintain efficiency and prolong the unit’s lifespan.
7: What is the average lifespan of a Rheem tankless water heater?
With proper maintenance, a Rheem tankless water heater can last 20 years or more, significantly longer than traditional tank models.
Conclusion
Both the Rheem 18kW and 24kW Electric Tankless Water Heaters exemplify cutting-edge technology in efficient water heating solutions. The 18kW model is ideal for smaller households, delivering consistent hot water while minimizing energy consumption, making it a pragmatic choice for eco-conscious consumers.
Conversely, the 24kW variant caters to larger households, offering robust performance and the ability to handle multiple simultaneous hot water demands. This model stands out for its capacity and reliability, ensuring a seamless experience for users. Collectively, these products reflect Rheem’s commitment to innovation and energy efficiency in modern water heating.