10 Best Point Of Use Tankless Electric Hot Water Heaters 2025 in the United States

The Rheem RTEX-24 is a well-regarded electric tankless water heater designed for those seeking consistent and on-demand hot water. With a flow rate of up to 5.9 gallons per minute (GPM), it’s capable of handling multiple hot water applications simultaneously, making it suitable for small to medium-sized homes or apartments. Its 24kW power rating ensures efficient heating, while an impressive energy efficiency rating of 99.8% means lower energy bills over time.

One of the standout features is the ON/OFF dial control with an adjustable digital temperature display, which allows users to easily set the desired temperature. Additionally, the self-modulating power control ensures that energy is used efficiently based on the demand for hot water, which is a significant advantage in terms of energy savings. The unit is designed for wall mounting, freeing up floor space and making installation relatively straightforward for a professional.

The Rheem RTEX-24 is a strong contender for anyone looking for a dependable point-of-use tankless water heater that balances performance and energy efficiency.

The Rheem 18kW 240V Tankless Electric Water Heater is designed for those seeking an efficient and space-saving solution for hot water needs. With a maximum flow rate of 4.4 gallons per minute (GPM), it can comfortably meet the demands of a small household or a single application, making it suitable for kitchens, bathrooms, or laundry areas. One of its standout features is the external digital thermostatic control with an LED display that allows for precise temperature adjustments, ensuring that users can achieve the desired hot water temperature with accuracy (+/- 1 degree).

Its energy efficiency is impressive, boasting a 99.8% rating, which means minimal energy waste and potentially lower utility bills. The self-modulation capability is another highlight, as it adjusts the power based on the demand for hot water, further optimizing energy use. Installation is straightforward, with bottom-mounted 3/4 inch NPT connections and a wall-mounted design that conserves space.

However, there are a few considerations to keep in mind. The flow rate of 4.4 GPM may not be sufficient for larger households with simultaneous high demand, such as multiple showers running at the same time. Additionally, while the installation is simple, it may still require some plumbing knowledge or a professional to set up properly. The product's compact dimensions are a plus for small spaces, but this may also mean lesser heat output compared to larger tank systems, which are often better suited for extensive hot water needs.

The Rheem 11kW 240V Tankless Electric Water Heater is a compact and efficient solution for those needing on-demand, continuous hot water. One of its primary strengths is the 2.68 Gallons Per Minute (GPM) flow rate, which should be adequate for small to moderate household use. The unit's self-modulating power control ensures efficient energy consumption by adjusting power based on hot water demand, contributing to its energy efficiency.

Additionally, the adjustable digital temperature display makes it easy to control the water temperature precisely, adding to user convenience. The installation process is relatively straightforward, with side 1/2" NPT water connections and a wall mount design, making it suitable for indoor professional installation. The LED display feature is a useful touch for monitoring and adjustments.

At 11kW, this model may not be sufficient for larger homes with higher hot water demands. The temperature rise might also be less significant in colder climates, potentially requiring a more powerful unit. Nonetheless, the Rheem 11kW 240V Tankless Electric Water Heater is a solid choice for individuals or small families seeking an efficient and relatively easy-to-install tankless water heater.