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

The Rheem RTEX-24 is a powerful electric tankless water heater designed to provide consistent and continuous hot water on demand. One of its major strengths is its high capacity with a flow rate of up to 5.9 gallons per minute (GPM), which is suitable for multiple fixtures running simultaneously. The unit is highly energy efficient, boasting 99.8% energy efficiency, which can help in reducing electricity bills over time.

The built-in digital temperature display and ON/OFF dial control allow for precise and easy temperature adjustments, catering to personal comfort needs. Its self-modulating power control ensures that the heater uses only the energy necessary to heat the water, contributing to its efficiency. The compact design with dimensions of 17.63 inches in width and 18.25 inches in height, along with a depth of 3.5 inches, makes it suitable for wall mounting in small spaces without being obtrusive.

However, installation might require professional assistance due to the need for 240V electrical connections and proper mounting. While the unit's high flow rate and efficiency are definite advantages, it may come with a higher upfront cost compared to traditional tank heaters. The LED display is a useful feature for monitoring but might be considered basic compared to more advanced models with Wi-Fi connectivity or app controls. This heater is a great option for those needing a reliable, efficient, and powerful point-of-use hot water solution, especially in homes with moderate to high hot water demand.

The Rheem 18kW 240V Tankless Electric Water Heater is designed for those looking for an efficient and compact point-of-use hot water solution. It features a digital thermostatic control with an LED display, allowing precise temperature adjustment and easy monitoring. This heater is equipped with advanced self-modulation technology, which means it adjusts power usage based on hot water demand, potentially leading to energy savings. With a decent flow rate of up to 4.4 gallons per minute, it should be sufficient for small households or individual fixtures.

One of its main advantages is the durability of its copper immersion heating elements, which are field serviceable, adding to the longevity of the product. Installation is simplified with bottom 3/4 inch NPT water connections, and it is wall-mountable, which saves space and makes it a suitable option for tight areas.

However, at 18kW and 240V, it requires a dedicated electrical circuit, which might necessitate professional installation if your current setup does not support these requirements. While the heater boasts an impressive energy efficiency rate of 99.8%, its maximum temperature of 140 degrees Fahrenheit and flow rate might not be adequate for larger demands or simultaneous multi-point use. The small and streamlined design with a gray stainless steel finish makes it blend well in a variety of environments, while its ease of replacement and maintenance is a plus for long-term usability. This product is particularly well-suited for small apartments, single bathrooms, or light commercial applications where only one or two fixtures are used at the same time.

The EcoSmart ECO 11 Electric Tankless Water Heater is designed to meet the needs of those looking for a compact and efficient hot water solution. One of its key strengths is its energy efficiency, boasting a remarkable 99% thermal efficiency, which means it only heats water as needed, saving energy compared to traditional tank heaters. Its compact design is another highlight; at just 11.5 x 8 x 3.75 inches, it can easily fit into smaller spaces, making it ideal for bathrooms, small sinks, or office breakrooms. The unit provides hot water on demand, ensuring that it doesn't run out, which is crucial for point-of-use applications, with a flow rate of up to 3.1 gallons per minute depending on the inlet water temperature.

However, there are some considerations to keep in mind. The Eco 11 is designed for low-flow applications and might not be suitable for larger households needing simultaneous hot water for multiple outlets. Installation requires a dedicated 240-volt electrical supply, and the higher amperage draw of 54 amps means electrical upgrades might be necessary in some homes. Additionally, although it comes with a lifetime warranty on parts, labor and incidental damages are not covered, which could lead to unexpected costs if repairs are needed.

The LED display offers easy temperature control, but some users may find it requires a bit of adjustment to get used to the precise temperature management. The EcoSmart ECO 11 is well-suited for those seeking an energy-efficient, space-saving hot water solution but may not meet the demands of larger households.