10 Best Tankless Water Heaters 2026 in the United States

The Rheem RTEX-24 24kW 240V Electric Tankless Water Heater offers a robust solution for continuous hot water supply with its impressive flow rate of up to 5.9 gallons per minute, making it suitable for households with moderate to high hot water demands. One of its standout features is the 99.8% energy efficiency, which helps in reducing energy costs and promoting eco-friendliness. The electric fuel type simplifies installation and maintenance compared to gas models, although it does require a 240V electrical connection, which some homes may need to upgrade to accommodate.

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 FOGATTI Natural Gas Tankless Water Heater is designed for outdoor use and offers powerful performance with a maximum flow rate of 8.1 gallons per minute, suitable for supplying hot water to about 3 to 5 outlets simultaneously. Running on natural gas and producing 180,000 BTU, it provides instant hot water without the wait, making it ideal for continuous hot water needs for showers, sinks, or appliances. Its compact size (about 17 x 26 inches) and relatively lightweight design simplify installation, and it performs well even if water pressure is low.