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TANKLESS ELECTRIC WATER HEATER

Tankless water heaters have come down in price over the past few years. They reduce water usage, save energy, and electric tankless water heaters can be run from Solar power.

📚 New to home energy efficiency? Start with ENERGY STAR's Energy Savings at Home guide to see where your home loses the most energy and which upgrades pay back fastest.

Electric Tankless Water Heaters

Prices and ratings from Amazon.com as of October 9th, 2026 — subject to change.

36kW Electric Tankless Water Heater, 240V WiFi, ETL Certified

$664.98

4

★ 

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18kW Electric Tankless Water Heater, Whole House On Demand

$279.00

5

★ 

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27kW Electric Tankless Water Heater 240V, Digital Display

$196.99

4.7

★ 

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Opti18 18kW 240V 3.7 GPM Electric Tankless Water Heater

$597.00

5

★ 

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APUS 18kW Electric Tankless Water Heater

$237.49

4.1

★ 

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VEVOR 27kW 240V Electric Tankless Water Heater

$251.67

4.3

★ 

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18kW 240V Electric Tankless Water Heater, On-Demand

$170.05

3.6

★ 

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Stiebel Eltron Tempra 24 Trend Electric Tankless Water Heater, 24kW

$514.23

4.5

★ 

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APUS 14kW Tankless Water Heater Electric, 240V Instant On Demand Hot

$237.49

4.1

★ 

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18kW Tankless Water Heater Electric 240V, Whole House, Gray

$269.46

4.4

★ 

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Electrolux 18kW Electric Tankless Water Heater, 240V

$449.99

4.5

★ 

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Westinghouse WiFi Electric Tankless Water Heater

$424.99

4.9

★ 

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Rheem RTEX-36 36kW Electric Tankless Water Heater

$769.99

4

★ 

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18kW Electric Tankless Water Heater, 240V, 4.4 GPM

$239.99

5

★ 

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Electric Tankless Water Heater 18kW 240V, On-Demand

$179.99

4.7

★ 

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27kW 240V Electric Tankless Water Heater, Whole House

$322.99

4.3

★ 

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Fogatti 14kW Electric Tankless Water Heater, 240V

$203.99

4.1

★ 

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27kW Tankless Water Heater Electric 240V, Whole House, Gray

$329.99

4.4

★ 

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27kW Tankless Water Heater Electric 240V WiFi, ETL Certified

$417.98

4

★ 

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36kW Electric Tankless Water Heater 240V ETL Certified WiFi

$474.98

4.4

★ 

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Rheem 18kW 240V Electric Tankless Water Heater

$415.00

4.2

★ 

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ThermoMate 27kW Electric Tankless Water Heater

$375.99

4.7

★ 

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Vancepic 18kW Electric Tankless Water Heater, 240V

$279.00

3.5

★ 

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24kW 240V Electric Tankless Water Heater, LED Display

$206.66

4.2

★ 

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ThermoMate 14kW Electric Tankless Water Heater

$249.99

4.7

★ 

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14kW Electric Tankless Water Heater 240V, Sink & Shower

$213.99

4.4

★ 

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GRS Electric Tankless Water Heater with Digital Display

$199.99

4

★ 

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27kW Tankless Water Heater Electric, APUS 240V On Demand Instant Hot

$338.99

4.1

★ 

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18kW Electric Tankless Water Heater 240V ETL Certified WiFi

$265.98

4.4

★ 

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Westinghouse Tankless Water Heater Electric 18kW 240V WiFi Whole House

$407.99

4.2

★ 

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

$519.00

4.3

★ 

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ORBEK 14kW Electric Tankless Water Heater, On Demand

$209.99

4.1

★ 

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Opti27 27kW 240V 4.5 GPM Electric Tankless Water Heater

$692.00

3.7

★ 

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Electric Tankless Water Heater, 18kW at 240V

$319.99

4.3

★ 

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Rheem RTEX-27 240V Electric Tankless Water Heater

$679.99

4.2

★ 

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Westinghouse 11kW Electric Tankless Water Heater

$259.99

5

★ 

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27kW Tankless Water Heater Electric, NOVIEEX 240V Instant Hot Water

$229.99

3.9

★ 

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Westinghouse 14kW Tankless Water Heater Electric 240V, WiFi, ETL

$315.99

4.9

★ 

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18kW Tankless Water Heater Electric, NOVIEEX 240V Instant Hot Water

$279.99

3.9

★ 

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18kW Tankless Water Heater Electric 240V, Self-Modulating

$245.99

4.4

★ 

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