10 Best Tankless Water Heaters 2025 in the United States

The Rheem RTGH-95DVLN-3 is a solid choice for those in need of a tankless water heater, especially for residential use. With a flow rate of up to 9.5 gallons per minute, it can easily meet the hot water demands of larger households or simultaneous usage across multiple fixtures. Its energy efficiency rating of 0.93 ensures that it operates economically, which can translate to lower energy bills over time.

The Rheem RTGH Series 8.4 GPM tankless water heater is a robust option for households seeking an efficient and high-capacity water heating solution. With a maximum flow rate of 8.4 gallons per minute, it is capable of handling the hot water needs of multiple fixtures simultaneously, making it suitable for larger families or homes with high hot water demand. Its energy efficiency rating of 0.93 ensures that it converts a significant portion of its fuel into heat, helping to reduce energy bills over time. The unit operates on natural gas and requires a 120-volt power source for its electric ignition, combining the efficiency of gas heating with the reliability of electric controls.

The Stiebel Eltron Tempra 24 Plus is a solid choice for those in need of an electric tankless water heater suitable for whole-house applications. Its continuous flow technology ensures that you'll have an uninterrupted supply of hot water, which is a significant advantage for larger households or those with high hot water demands. The unit is compact and energy-efficient, featuring a design that doesn't require venting, which makes it a great option if space is limited. The energy savings monitor is a nice addition, allowing you to track your energy costs effectively.