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 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 EcoSmart ECO 11 is a compact electric tankless water heater designed primarily for small-scale or point-of-use applications like a bathroom sink or office breakroom. It delivers a flow rate between 1.3 and 3.1 gallons per minute, which means it can provide steady hot water for low-flow needs but might struggle with larger demands such as multiple full bathrooms running simultaneously. The patented self-modulating technology keeps water temperature consistent within 1 degree, which is great for comfort and energy savings. Speaking of energy, this unit is quite efficient, converting 99% of electricity into heat and only heating water when you need it, helping reduce your utility bills compared to traditional tank heaters. Installation is flexible because of its small size—about 11.5 by 8 by 3.75 inches—and wall-mount design, saving space and making it ideal for tight areas. It operates at 240 volts and requires a 54-amp electrical draw, so your home's electrical system must support this.