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10 bestElectric Tankless Water Heaterof September 2025

112M consumers helped this year.

1

Tankless Water Heater Electric 24kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display for Residential Whole House Shower, 102A Gray
Tankless Water Heater Electric 24kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display for Residential Whole House Shower, 102A Gray

thermomate

9.9

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2

Thermomate Mini Tank Electric Water Heater ES700 Hard Wired 6.5 Gallons Point of Use Water Heater for Instant Hot Water Under Kitchen Sink 120V 1440W
Thermomate Mini Tank Electric Water Heater ES700 Hard Wired 6.5 Gallons Point of Use Water Heater for Instant Hot Water Under Kitchen Sink 120V 1440W

thermomate

9.8

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20% off

3

Tankless Water Heater Electric 14kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display Easy Installation, for Residential Sink & Shower, 58A Gray
Tankless Water Heater Electric 14kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display Easy Installation, for Residential Sink & Shower, 58A Gray

thermomate

9.7

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4

Rheem 240V 2 Heating Chambers RTEX-18 Residential Tankless Water Heater, Small Grey
Rheem 240V 2 Heating Chambers RTEX-18 Residential Tankless Water Heater, Small Grey

Rheem

9.5

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13% off

5

Electric Tankless Water Heater, 27kW 240V on Demand Instant Endless Water Heater with LED Temperature Display for Residential Whole House Shower, Space Saving
Electric Tankless Water Heater, 27kW 240V on Demand Instant Endless Water Heater with LED Temperature Display for Residential Whole House Shower, Space Saving

Ranein

9.3

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Related productsUp to 18% off

Rheem 8kW 240V Tankless Electric Water Heater

Rheem 8kW 240V Tankless Electric Water Heater

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Rheem 11kW 240V Tankless Electric Water Heater

Rheem 11kW 240V Tankless Electric Water Heater

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Electric Tankless Water Heater 6000W 220V Instant Hot Water Heater with Handheld Shower Head and Hose Set, LED Touch Screen Switch Adjustable Temperature Water Heater for Bathroom Kitchen

Electric Tankless Water Heater 6000W 220V Instant Hot Water Heater with Handheld Shower Head and Hose Set, LED Touch Screen Switch Adjustable Temperature Water Heater for Bathroom Kitchen

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Rheem RTEX-27 240V 3 Heating Chambers Residential Tankless Water Heater

Rheem RTEX-27 240V 3 Heating Chambers Residential Tankless Water Heater

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6

Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology, 17 x 17 x 3.5
Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology, 17 x 17 x 3.5

EcoSMART

9.1

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7

CAMPLUX Tankless Electric Water Heaters 18kW, On Demand Hot Water Heater Electric with Digital Display 240V for Shower, White
CAMPLUX Tankless Electric Water Heaters 18kW, On Demand Hot Water Heater Electric with Digital Display 240V for Shower, White

CAMPLUX ENJOY OUTDOOR LIFE

8.8

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14% off

8

Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray

Rheem

8.6

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9

Ecosmart ECO Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology, White
Ecosmart ECO Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology, White

EcoSMART

8.3

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10

Stiebel Eltron Tankless Water Heater – Tempra 29 Plus – Electric, On Demand Hot Water, Eco, White - 23, Gloss White
Stiebel Eltron Tankless Water Heater – Tempra 29 Plus – Electric, On Demand Hot Water, Eco, White - 23, Gloss White

Stiebel Eltron

8.0

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