Fed up with running out of hot water? The largest tankless water heater ensures endless comfort in your home.
The **Rheem 18kW 240V Tankless Electric Water Heater** is perfect for *high-demand households* needing reliable hot water on demand.
Plus, its *compact design* saves valuable space while delivering impressive performance.
We tested *durability*, *ease of use*, and more to ensure you get the best hot water solution for your needs.
Rheem 18kW Electric Tankless Water Heater
Rheem 18kW 240V Tankless Electric Water Heater: 18” long, durable copper, 2-year warranty.
Benefits
- Flow rate of up to 4.4 GPM ensures a steady supply of hot water for multiple applications.
Drawbacks
- Requires professional installation, which may increase initial costs.
The Rheem 18kW Tankless Electric Water Heater is designed for efficiency and reliability. Its advanced self-modulation technology adjusts power based on hot water demand, making it ideal for homes with varying usage patterns. The external digital thermostatic control with LED display allows for precise temperature adjustments, ensuring comfort and safety.
Installation is straightforward with bottom 3/4 inch NPT water connections, but it does require a professional for optimal setup. The durable copper immersion heating elements are field serviceable, meaning maintenance is manageable over time. This unit provides a continuous flow of hot water, making it suitable for families or homes with high demand.
However, potential buyers should note that the installation cost may be a factor, as it is not a DIY project for most. Overall, the Rheem 18kW is a practical pick for small to medium-sized homes looking to upgrade their hot water system.
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ORBEK 14kW Electric Tankless Water Heater
Product: 14kW Tankless Water Heater Electric, ORBEK 240 Volt On Demand Instant Hot Water Heater, with LED Digital Display, ETL Certified, Up to 3.38 GPM for 2-3 Points of Use.
Benefits
- Provides up to 3.38 GPM of endless hot water for simultaneous use at multiple points.
Drawbacks
- Requires professional installation due to specific electrical and plumbing needs.
This Orbek tankless water heater is a game-changer for anyone looking to upgrade their hot water supply. With a compact size of 14.2″H x 9.5″L x 3.1″W, it fits comfortably in small spaces, making it ideal for apartments or homes with limited room. The unit boasts high energy efficiency, potentially reducing electricity costs by up to 60% compared to traditional tank heaters.
Safety is a top priority, as this heater is ETL certified and includes features such as leakage protection and over-temperature protection. The built-in chip ensures stable temperature control, adjusting heating power 20,000 times per second, which maintains a consistent temperature within 1°F. The LED digital display makes it easy to monitor and adjust settings from 86°F to 140°F.
While it offers numerous benefits, the requirement for a 240V/60AMP two-pole breaker and specific plumbing connections means professional installation is recommended. Overall, this product is a practical pick for small spaces, providing reliable and efficient hot water on demand.
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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 during peak demand.
- Holds 5L without tipping, making it reliable for various household needs.
- Easily adjustable ON/OFF dial control with a digital temperature display allows for precise temperature settings from 80-140 degrees F.
- Efficient design saves space and energy, eliminating the need for venting.
Drawbacks
- No dishwasher-safe parts, which may complicate cleaning for some users.
A practical pick for small spaces, the Rheem RTEX-24 is ideal for those seeking an efficient and reliable solution for hot water needs. Its compact design and powerful performance make it suitable for a variety of settings, from apartments to smaller homes. Ensure your electrical system can support its requirements for optimal performance.
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Rheem 11kW Tankless Electric 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 continuous hot water on demand, eliminating the need for a storage tank.
- Compact design fits easily in small spaces, making it ideal for apartments or tight installations.
- Energy-efficient operation reduces utility bills compared to traditional water heaters.
Drawbacks
- No option for a remote control, which may limit convenience for some users.
- Requires professional installation, adding to initial costs.
A practical pick for small spaces and those seeking an efficient hot water solution.
To buy this product, click here.
ORBEK 18kW Electric Tankless Water Heater
Product: 18kW Tankless Water Heater Electric, ORBEK Instant On Demand Hot Water Heater 240V, Up to 4.17 GPM, Supply for 2-3 Fixtures Simultaneously, within 1℉ Stable Temp, ETL Certified, Indoor Installation.
Key Specs: 17″H x 13.0″L x 3.9″W, ETL certified, 2-year warranty.
Benefits
- Provides up to 4.17 GPM of endless hot water for simultaneous use at 2-3 fixtures.
- Energy efficient, potentially reducing electricity costs by up to 60% compared to traditional heaters.
- Stable temperature control keeps water within 1°F for a comfortable experience.
- LED digital display for easy temperature adjustments and real-time monitoring.
- Compact design saves over 50% of space compared to tank-style heaters.
Drawbacks
- Requires specific electrical setup: needs 2 x 240V/40A breakers and 8 AWG wiring.
- No outdoor installation option available.
This heater is a practical pick for small spaces where efficiency and space-saving are priorities. Ideal for homes needing reliable hot water without the bulk of traditional tanks.
To buy this product, click here.
Faq about Largest Tankless Water Heater:
1:What is the largest tankless water heater available?
The largest tankless water heater typically offers a flow rate of up to 10 gallons per minute or more, suitable for large households or commercial use.
2:How do I choose the right size tankless water heater?
To choose the right size, consider your peak hot water demand, measured in gallons per minute, and the temperature rise needed for your location.
3:What are the benefits of a large tankless water heater?
Benefits include endless hot water supply, energy efficiency, space-saving design, and lower utility bills compared to traditional tank heaters.
4:Can a tankless water heater supply multiple outlets?
Yes, a large tankless water heater can supply hot water to multiple outlets simultaneously, depending on its flow rate and the demand of each outlet.
5:What is the lifespan of a tankless water heater?
A tankless water heater can last 15 to 20 years with proper maintenance, significantly longer than traditional tank models.
6:Are there any disadvantages to tankless water heaters?
Potential disadvantages include higher upfront costs, the need for proper installation, and limitations on flow rate during peak usage times.
Conclusion
The Rheem 18kW Electric Tankless Water Heater exemplifies efficiency and reliability, catering to high-demand households with its robust performance and advanced technology. Its ability to deliver continuous hot water while minimizing energy consumption positions it as a premier choice for discerning consumers.
Conversely, the ORBEK 14kW Electric Tankless Water Heater offers a compact design without compromising on functionality, making it ideal for smaller spaces. Its user-friendly interface and energy-saving features provide an optimal solution for those seeking to enhance their water heating system with modern convenience.