10 Best Electric Water Heaters 2026 in the United States

The Rheem 18kW Tankless Electric Water Heater is a solid choice for those looking for an efficient and space-saving solution to hot water needs. Its compact size (14.5"W x 18.25"H) makes it ideal for homes with limited space, and the wall-mount design allows for easy installation. With a maximum flow rate of 4.4 gallons per minute, it can adequately serve smaller households or apartments, meeting the demands for showers and other hot water needs simultaneously.

One of the key strengths of this model is its impressive energy efficiency, boasting a 99.8% efficiency rating. This not only helps reduce energy bills but also makes it an eco-friendly option. The external digital thermostatic control with LED display allows for precise temperature adjustments, which can be a great feature for users who value control over their hot water supply.

There are some considerations to keep in mind. While the recovery rate is decent for its size, larger families might find the output insufficient during peak usage times. Additionally, installation might require a professional, especially if your existing plumbing does not match the specifications. Some customers have also noted that while the unit is generally reliable, it may not handle extremely high volumes of hot water demand as effectively as larger tank systems.

The warranty and customer service provided by Rheem is a plus, offering peace of mind should any issues arise. Safety features are also included, which is essential for households with children. The Rheem 18kW Tankless Electric Water Heater is best suited for smaller homes or apartments focused on energy efficiency and compact design, but larger families may need to consider their hot water demands before making a decision.

The Rheem 8kW 240V Tankless Electric Water Heater is a compact and energy-efficient option for providing on-demand hot water in smaller households or for limited use points like a single bathroom or kitchen sink. Its tankless design means it heats water continuously, so you don’t have to wait for a tank to refill, which helps save space and potentially reduces energy waste compared to traditional tank heaters. The unit has an 8kW power rating and can deliver a flow rate of up to 1.95 gallons per minute, making it suitable for low-to-moderate hot water needs but likely not enough for whole-house use or multiple simultaneous showers.

The adjustable digital temperature display and ON/OFF dial control offer easy temperature customization. At just over 12 inches tall and 8 inches wide, it fits well in tight spaces and mounts on a wall, which is great if installation space is limited. The maximum operating pressure is 150 PSI, which is standard but something to confirm with your home plumbing setup.

Rheem is a reputable brand known for reliable water heaters, which adds confidence in durability. This unit is a practical choice if you need a small, efficient electric water heater for point-of-use applications, though it may not meet the demands of larger households or multiple simultaneous users.

The BOSCH Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon offers a compact and convenient solution for immediate hot water needs under your sink. With a capacity of 2.5 gallons, it is suitable for supplying hot water to a single or two sinks simultaneously, making it perfect for small households or point-of-use applications. The product's thermal efficiency stands impressively high at 98%, ensuring minimal energy loss and better performance.

The fast recovery rate eliminates long waits, providing on-demand hot water promptly. Measuring at 13.75 inches in width and height, and 10.75 inches in depth, its compact size allows for flexible installation on the shelf, wall, or floor, making it adaptable to different spaces. Installation is straightforward with a 36-37 inch cord that plugs into a standard 120-volt outlet, further aiding its versatility.

The water heater is made with premium glass-lined material, promising durability and a longer service life. On the downside, with only a 2.5-gallon capacity, it might not be suitable for larger households or high-demand applications. The maximum temperature is capped at 140 degrees Fahrenheit, which may not be sufficient for some users with specific hot water needs. It comes with a 6-year warranty on the unit and a 2-year warranty on parts, which is decent but might not offer the most extended coverage available in the market.