Best Tankless Water Heaters

Our top 3 picks

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  NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU

  The Rinnai RX199iN Condensing Smart Sense Tankless Water Heater offers versatile installation options, supporting both indoor and outdoor setups. With a compact design comparable to a small suitcase, it efficiently delivers up to 11.1 gallons per minute, making it ideal for large households with multiple simultaneous users. Powered by either natural gas or propane, it features Smart Sense gas control for seamless operation. Customers appreciate its reliable performance, particularly its ability to provide endless hot water, which is invaluable for families. While the electronic adjustments are simple to use, some users noted difficulties with the app functionality. For optimal maintenance, especially in hard water areas, additional valves for recirculating cleaning solutions are recommended. Overall, this tankless water heater combines efficiency with convenience, ensuring you never run out of hot water.
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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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  EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

  The EcoSmart ECO 11 Electric Tankless Water Heater is a compact, energy-efficient solution for providing endless hot water. Its self-modulating technology ensures consistent water temperature within 1 degree, making it ideal for small spaces and point-of-use applications like bathrooms and office breakrooms. This unit is praised for its ability to reduce utility bills significantly, as it only heats water when needed. Customers have noted the importance of maintaining a steady hot water flow to optimize performance. Although installation may require professional electrical adjustments, the space-saving design and reliable performance make it a worthy investment. Perfect for small households, it offers an efficient alternative to traditional bulky water heaters, ensuring hot water is always available without occupying valuable floor space.