Efficient and energy-saving water heaters

Discover the top choices for efficient water heating to significantly reduce your energy bills. Explore heat pump water heaters, tankless models, and other innovative solutions offering superior performance. Learn how ENERGY STAR certification can guide you towards products that minimize energy consumption and your home's carbon footprint. Optimize your hot water system with advanced technologies that guarantee savings and comfort.

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  1. 1

    Stiebel Eltron Tempra 36 Plus Tankless Water Heater

    87 Global Votes
    • Energy-efficient design

      (+4)

    Known for its exceptional 99% efficiency rating and silent operation, this electric tankless water heater provides consistent hot water. Its compact and lightweight design allows for easy wall-mounting, making it suitable for various installations.

  2. 2

    Rinnai RU180iN Tankless Water Heater

    58 Global Votes
    • ENERGY STAR qualified

      (+4)

    This tankless water heater is a top pick due to its energy-efficient operation and high flow rate, making it ideal for homes with significant hot water demands. Its Wi-Fi capability allows for convenient remote control and monitoring.

  3. 3

    Rinnai RXP199iN Tankless Water Heater

    58 Global Votes
    • Excellent efficiency

      (+4)

    This model is considered the best overall option for homes requiring substantial hot water without compromising efficiency. It offers a high flow rate and can be installed flexibly, making it a versatile and powerful choice.

  4. 4

    EcoSmart ECO 27 Electric Tankless Water Heater

    26 Global Votes
    • Saves space

      (+4)

    This is one of the most affordable and efficient electric tankless options available, featuring self-modulating technology for optimal energy use. Its compact wall-mount design makes it ideal for smaller homes or point-of-use applications.

  5. 5

    Rheem ProTerra Hybrid Electric Water Heater (2025)

    4 Global Votes
    • Highly efficient water heating solution

      (+4)

    This model is highly recommended for its extremely low operating costs and robust ENERGY STAR® performance. Its advanced smart features, including Wi-Fi control and leak detection, offer both convenience and enhanced safety for modern homes.

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  7. 6

    A.O. Smith Signature 900 Smart Electric Water Heater with Hybrid Heat Pump

    3 Global Votes
    • ENERGY STAR certified

      (+4)

    Recognized for its extreme energy efficiency and reliable operation, this water heater integrates smart technology for peace of mind. Its built-in leak detector and automatic shutoff provide crucial safety features, while Wi-Fi connectivity enhances user control.

  8. 7

    Rheem RTEX-13 Electric Tankless Water Heater

    2 Global Votes
    • 99.8% energy efficiency

      (+4)

    With a 99.8% energy efficiency rating and a compact size, this unit is ideal for smaller homes, apartments, or point-of-use applications. It provides demanding hot water needs efficiently without taking up much space.

  9. 8

    Bradford White AeroTherm® Series G2 Hybrid Electric Heat Pump Water Heater

    1 Global Votes
    • Saves up to $600 in annual energy costs

      (+4)

    This model stands out as Bradford White's most technologically advanced and efficient hybrid electric heat pump water heater. It offers enhanced control through its ICON System® and Wave® connectivity, alongside superior durability and significant energy savings.

  10. 9

    GE Profile Geospring

    0 Global Votes
    • Up to 4.7x more energy-efficient than standard electric water heaters

      (+4)

    Rated as the most energy-efficient model by Consumer Reports, the GE Profile Geospring offers excellent performance and peace of mind. Its large tank and ten-year warranty make it a reliable and cost-effective choice for homeowners.