10 Best Electric Instant Hot Water Heater 2024 in the US

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Continuous Flow: Advanced Flow Control technology maintains water temperature for constant comfort.

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Space & Energy Saver: Small, sleek design saves space and energy with auto-modulation and electronic control.

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Easy Operation: Electronic switch, noise-free operation, digital temperature display, and memory buttons.

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Tempra 20 Plus: 19.2kW, 240V model with output water temperature of 68° to 140°F.

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Warranties Included: 7-Year Leakage and 3-Year Parts Warranties included with purchase.

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Continuous Flow: Provides continuous, on-demand hot water without interruption.

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Space & Energy Saver: Compact design saves space and energy with auto-modulation.

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Silent Operation: Operates noise-free with an easy-to-read digital temperature display.

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Tempra 20 Trend Model: 19.2kW, 240V, with output water temperature of 68° to 140°F.

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Warranties Included: Includes 7-Year Leakage and 3-Year Parts Warranties.

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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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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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Instant Hot Water: Provides immediate hot water in 3 seconds with a continuous supply, ensuring no wait time and no cold showers.

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High Flow Rate: Delivers a flow rate of 5.27 gallons per minute at a 35°F temperature rise, suitable for whole house shower use.

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Self-modulating Power: Adjusts energy usage in real-time for heating water, achieving 99.8% efficiency and up to 60% savings on water heating costs.

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Stable Water Temperature: Automatically adjusts energy consumption based on incoming water temperature and flow rate, maintaining a stable output temperature.

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Digital Temperature Control: Features a digital display for precise temperature adjustments in 1° increments between 80°F to 140°F.

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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.

4.

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

2.

Advanced Self-Modulation: Automatically adjusts power to meet hot water demand, enhancing energy efficiency.

3.

Copper Heating Elements: Features three durable copper immersion heating elements that are field serviceable.

4.

Easy Installation: Designed for simple installation with bottom 3/4 inch NPT water connections.

5.

Digital Temperature Display: Includes a digital temperature display for easy monitoring and adjustment.

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Instant Hot Water: Provides immediate and endless hot water without waiting for preheating, ideal for small apartment use.

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Self-Modulating System: Adjusts power input based on flow rate and temperature setting for comfortable use and energy efficiency.

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User-Friendly Controls: Features a digital display and touch control panel for easy temperature adjustments and monitoring.

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Multiple Safety Protections: Equipped with leakage, over-heating protection, and auto-stop features to ensure user safety.

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Compact Design: Space-saving size allows for point-of-use installation to minimize waste, suitable for various applications.

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

2.

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

3.

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

4.

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.