Best instant hot water heaters

Our top 3 picks

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  Rheem 18kW 240V Tankless Electric Water Heater, Gray

  The Rheem 18kW 240V Tankless Electric Water Heater is a compact and efficient solution for providing on-demand hot water. Its advanced self-modulation technology ensures energy savings by adjusting power based on hot water demand. Ideal for small homes or apartments, this unit offers a space-saving design, replacing bulky traditional water tanks with a sleek and modern option. Customers appreciate the instant hot water supply and the additional storage space gained from its installation. With a flow rate of up to 4.4 GPM, it can comfortably support multiple household activities simultaneously. Easy installation and maintenance are facilitated by its threaded connections and digital temperature display. This heater is perfect for those seeking a reliable and efficient water heating solution with the added benefit of reduced energy costs.
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  InSinkErator Instant Hot Water Tank, 2/3 Gallon Stainless Steel Tank, HWT-00

  The InSinkErator Instant Hot Water Tank, model HWT-00, is a robust and efficient solution for those seeking instant hot water. With a 2/3-gallon stainless steel tank, it can dispense up to 60 cups of hot water per hour, making it ideal for busy kitchens and frequent hot water needs. Designed for easy replacement, it fits seamlessly with existing InSinkErator systems, excluding models Hot1 and Hot100. Many users appreciate its straightforward installation process, often finding it simple enough to replace themselves without needing professional help. The adjustable temperature control allows customization from 160°F to 210°F, catering to a variety of hot water requirements. This product is well-suited for both residential and small office environments, providing a reliable and convenient hot water source. Its efficient design and practical features make it a top choice for those looking to upgrade or replace their current hot water dispenser.
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  BOSCH Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted

  The Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon ES2.5 is a compact and efficient solution for delivering hot water right where you need it. With a 2.5-gallon capacity, this mini-tank fits conveniently under sinks, making it perfect for small homes, garages, offices, and in-law suites. Its versatile installation options allow it to be shelf, wall, or floor mounted, ensuring flexibility to suit various spaces. Users appreciate its thermal efficiency and fast recovery rate, which eliminate the wait for hot water, providing immediate access at up to two sinks simultaneously. The unit is easy to install, requiring just a 120-volt outlet, making it an accessible option for those seeking to enhance their hot water access without extensive plumbing work. Overall, the Bosch Tronic 3000 T is praised for its reliability, performance, and energy efficiency, making it a top choice for point-of-use water heating needs.