Looking for the best 11 GPM tankless water heater? Enjoy endless hot water with top-rated models designed for efficiency and convenience!
The Rheem 11kW 240V Tankless Electric Water Heater delivers reliable hot water on demand, making it ideal for homes with high hot water needs. With its compact design, it saves space while providing energy-efficient performance. Similarly, the Fogatti 11kW Tankless Water Heater offers up to 2.6 GPM, perfect for multiple points of use, ensuring you never run out of hot water.
For those seeking advanced features, the Westinghouse 11kW 240V Tankless Water Heater is Wi-Fi enabled, allowing for remote temperature control. These heaters are versatile, catering to various household sizes and hot water requirements.
In this review, you’ll learn about the top-performing models, their unique features, and how they can meet your hot water needs effectively. Get ready to find the perfect fit for your home!


Rheem 11kW Tankless Electric Water Heater
Rheem 11kW 240V Tankless Electric Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- On demand, consistent hot water with a flow rate of up to 2.68 GPM.
- Self-modulating power control optimizes energy use for efficiency.
- Compact design ideal for small spaces.
Drawbacks
- No dishwasher-safe parts, requiring manual cleaning.
The Rheem 11kW Tankless Electric Water Heater is an excellent choice for those seeking reliable hot water without bulky storage tanks. Its 11kW model delivers a flow rate of up to 2.68 GPM, making it efficient for everyday needs. The self-modulating power control adjusts energy consumption based on demand, ensuring you save on utility bills while enjoying continuous hot water.
However, users should note that it features no dishwasher-safe parts, necessitating hand washing for maintenance. This could be a minor inconvenience for some, but the benefits outweigh this drawback for many homeowners.
A practical pick for small spaces, this heater fits neatly into tight areas, providing hot water on demand without taking up valuable room. Overall, the Rheem 11kW Tankless Electric Water Heater is a solid investment for those looking to enhance their hot water solutions.
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Fogatti 11kW Electric Tankless Water Heater
Fogatti 11kW Tankless Water Heater: 14.3” x 9.6” x 3.5”, ETL Certified, 2-year warranty.
Benefits
- Supplies up to 2.6 GPM for simultaneous use at 1-2 points, ensuring hot water on demand.
Drawbacks
- Requires 50 AMP circuit breaker and specific wiring, which may complicate installation.
The Fogatti 11kW Tankless Water Heater is designed for efficiency, delivering hot water almost instantly with a remarkable heating efficiency of up to 98%. This model is perfect for small households or apartments where space is limited. Its compact size allows for wall mounting, freeing up valuable floor space.
With a flow rate of up to 2.6 GPM, it can comfortably support 1-2 points of use simultaneously, making it ideal for a shower and sink running at the same time. The digital temperature display allows precise adjustments in 1° increments, giving users control over their hot water needs.
However, potential buyers should note that it requires a dedicated 50 AMP circuit breaker and specific wiring, which could be a hurdle for some installations. Additionally, while it boasts numerous safety features like overheating protection, it is essential to ensure compatibility with your home’s electrical system.
A practical pick for small spaces, the Fogatti Tankless Water Heater ensures you never run out of hot water while optimizing your living area.
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Westinghouse 11kW Wi-Fi Tankless Water Heater
Westinghouse 11kW 240V Tankless Water Heater: 14.2” H x 9.5” W x 3.5” D, ETL certified, 2-year warranty.
Benefits
- Delivers up to 2.6 GPM for simultaneous use at 1 shower and 2 sinks.
Drawbacks
- Requires 46 A and a 50 A double-pole breaker with 8 AWG wiring.
This Westinghouse tankless water heater provides instant hot water on demand, eliminating the wait time and temperature fluctuations that can occur with traditional water heaters. The Wi-Fi capability allows for remote temperature control via an app or voice commands, making it a modern addition to any home. The precise temperature settings from 86°F to 140°F ensure comfort and convenience.
Its compact design is ideal for small spaces, easily mounting flush to walls and freeing up valuable floor space. The 4-layer safety protection ensures durability and low maintenance, giving users peace of mind. However, it does require specific electrical requirements, which may complicate installation for some users.
A practical pick for small spaces, the Westinghouse 11kW electric tankless water heater is perfect for apartments or homes where space and efficiency are crucial. Enjoy consistent hot water without the bulk of a traditional tank system.
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Rinnai CXP199iN Tankless Water Heater 11 GPM
Rinnai CXP199iN High Efficiency Plus Natural Gas Interior Tankless Water Heater: 11 GPM, 97% thermal efficiency, Smart Connect app compatibility, 2-year warranty.
Benefits
- 11 GPM flow rate ensures continuous hot water supply.
- Optimizes energy usage for lower operational costs.
- Smart-Circ learns hot water patterns, enhancing efficiency.
Drawbacks
- Professional installation recommended for best results.
- Requires RX-OVC vent cap for outdoor installations.
The Rinnai CXP199iN is an excellent choice for homeowners seeking a reliable tankless water heater. Its impressive 11 GPM flow rate ensures that you won’t run out of hot water, making it ideal for families or homes with high hot water demands. With a thermal efficiency rating of 97%, it maximizes energy use, contributing to lower energy bills over time.
One of the standout features is the Smart-Circ technology, which learns your hot water usage patterns and adjusts accordingly, providing hot water on demand while saving energy. The Smart Connect app allows for easy monitoring and management, giving users full control over their water heating system from their smartphones.
However, it’s important to note that professional installation is recommended to ensure optimal performance, and the unit requires a specific vent cap for outdoor setups. Overall, the Rinnai CXP199iN is a practical pick for small spaces and those looking to upgrade to a more efficient hot water solution.
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Rheem Tankless Gas Water Heater 11 GPM
Rheem Prestige Condensing Tankless Gas Indoor Natural Gas Water Heater With Built-in Recirculation: 11.0 GPM, high energy efficiency, compact design, water and gas leak detection.
Benefits
- Provides hot water on demand, eliminating wait times.
- 11.0 GPM capacity meets high hot water needs efficiently.
- Auto-Learn Programming adapts to usage patterns for optimal performance.
- Compact design saves valuable space, ideal for small homes or replacements.
Drawbacks
- Installation may require professional help, potentially increasing initial costs.
- Requires regular maintenance to ensure longevity and efficiency.
Ideal for small spaces or households needing efficient hot water solutions, this unit is a practical choice for those looking to upgrade from traditional tank water heaters. Its combination of high performance and space-saving design makes it a top contender in the tankless water heater market.
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Faq about best 11 gpm tankless water heater:
1:What is an 11 GPM tankless water heater?
An 11 GPM tankless water heater provides an on-demand hot water flow rate of 11 gallons per minute, suitable for larger households with multiple simultaneous hot water needs.
2:How do I choose the best 11 GPM tankless water heater?
Consider factors like energy efficiency, installation requirements, brand reputation, warranty, and customer reviews to find the best option for your needs.
3:Are 11 GPM tankless water heaters energy efficient?
Yes, they are generally more energy efficient than traditional water heaters since they only heat water when needed, reducing standby energy loss.
4:What are the benefits of an 11 GPM tankless water heater?
Benefits include endless hot water supply, reduced energy bills, compact size, and a longer lifespan compared to conventional heaters.
5:Can an 11 GPM tankless water heater be installed indoors or outdoors?
Most models can be installed indoors or outdoors, but check the manufacturer’s specifications for proper installation guidelines.
6:What maintenance is required for an 11 GPM tankless water heater?
Regular descaling, checking filters, and inspecting for leaks are essential to maintain optimal performance and prolong the unit’s lifespan.
Conclusion
Both the Rheem 11kW Tankless Electric Water Heater and the Fogatti 11kW Electric Tankless Water Heater exemplify excellence in energy-efficient design and consistent performance. Rheem’s model is lauded for its reliability and advanced technology, ensuring optimal water heating with minimal energy consumption, making it a top choice for eco-conscious consumers.
Conversely, the Fogatti model offers remarkable versatility and user-friendly features, catering to diverse household needs while maintaining efficiency. Together, these products represent the pinnacle of modern water heating solutions, appealing to those seeking both innovation and sustainability in their home appliances.




