10 Best Energy Efficient Electric Water Heater 2024 in the US

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Compact Design: 7-gallon mini-tank fits under sink for convenience.

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High Efficiency: Thermal efficiency of 98% for energy savings.

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Flexible Installation: Mount vertically or horizontally as needed.

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Reliable Performance: Provides on-demand hot water with 1440 watts.

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Easy Mounting: Shelf, floor, or wall mounting options available.

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Digital Thermostatic Control: External digital control with LED display for precise temperature regulation with +/- 1 degree accuracy.

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Self-Modulation: Advanced self-modulation adjusts power to meet real-time hot water demand, enhancing efficiency.

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Copper Heating Elements: Features two durable copper immersion heating elements that are field serviceable and provide a flow rate of up to 4.4 GPM.

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Easy Installation: Designed for simple installation with bottom 3/4 inch NPT water connections and a threaded design for easy replacement.

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Digital Temperature Display: Equipped with a digital temperature display for easy monitoring and control of water temperature.

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Endless Hot Water: Provides a consistent and endless supply of hot water on demand without running out.

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Space Saving Design: Compact size saves valuable storage space, with wall-mounted or point-of-use installation options.

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Energy Efficient: 99% thermal energy efficiency and only heats water on demand, potentially saving up to 50% in water heating costs.

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Sizing Options: Ideal for whole home applications with a range of 2.7 to 6.5 gallons-per-minute, depending on inlet water temperature.

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Warranty and Certifications: Comes with a Limited Lifetime Warranty and is UL-499 certified and ETL listed.

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ON/OFF Dial Control: Easy-to-use interface with adjustable digital temperature display for precise control.

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Self-modulating Power: Automatically adjusts energy consumption based on flow rate and temperature setting, enhancing energy efficiency.

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High Flow Rate: Provides up to 5.9 gallons per minute, ensuring ample hot water for multiple uses simultaneously.

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Convenient Water Connections: Features bottom 3/4" NPT water connections for easy installation.

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Continuous Hot Water: Delivers on-demand, consistent hot water without the wait or worry of running out.

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Endless Hot Water: Provides a continuous supply of hot water on-demand without running out.

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Precise Temperature Control: Monitors water temperature and controls flow rates for consistent performance within 1 degree of the selected temperature.

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Energy Efficient: Utilizes patented self-modulating technology to save energy, with a 99% thermal energy efficiency rate.

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Compact Design: 90% smaller than traditional tank heaters, can be installed on a wall or at the point of use.

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Cost Savings: Only heats water when needed, unlike tank heaters that maintain temperature constantly, leading to potential savings on energy bills.

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Adjustable Digital Control: External digital thermostatic control with LED display for precise temperature adjustment and monitoring with +/-1 degree accuracy.

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Copper Heating Elements: Features durable copper immersion with two heating elements that are field serviceable for longevity and reliability.

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Self-Modulating Power: Incorporates self-modulating power control to optimize energy usage based on demand.

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Easy Installation: Comes with 1/2 NPT adapters and side 1/2 inch compression water connections for straightforward installation.

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High Energy Efficiency: Boasts a 99.8% energy efficiency rating, reducing energy consumption and costs.

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Endless Instant Hot Water: 18kW system provides 120℉+ water instantly.

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User-Friendly Control Panel: Touch control panel for easy temperature setting.

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Multiple Safety Protections: Includes over-temp, leakage, and high voltage protection.

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Energy Saving: 99.8% efficiency saves up to 60% on electric charges.

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Compact Point of Use Design: Stylish, compact design for easy installation.

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Energy Efficiency: Built-in insulation foam reduces heat loss.

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Compact Design: 2.5-gallon mini-tank fits under sink for convenience.

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Durable Construction: Glass-lined tank ensures long service life.

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Temperature Control: Adjustable thermostat with 3 settings from 50°F to 149°F.

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Easy Installation: Can be wall, floor, or shelf mounted with included bracket.

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Compact Design: Sleek and space-saving design with a digital display for temperature output.

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High Energy Efficiency: ECOSMART tankless water heaters offer 99.8-percent energy efficiency.

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Made in USA: The product is manufactured in the United States, ensuring quality and reliability.

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Standard Pipe Fittings: Comes with 3/4 inch NPT pipe fittings for compatibility with standard plumbing setups.

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Electrical Requirements: Requires 4 x 40 A breakers and a 150 A electrical service.