10 Best rated electric tankless water heaters of 2025

Save up to 38% off

Best Choice

1

Stiebel Eltron
Stiebel Eltron 239223 Tankless Water Heater – Tempra 29 Plus – Electric, On Demand Hot Water, Eco, White, 23

22% Off
Main highlights

Unlimited Hot Water Supply
Provides a continuous and unlimited supply of hot water on demand.

Ideal for Energy Efficiency
Best suited for eco-conscious homes seeking energy-efficient water heating solutions.

Highly Praised Performance
Customers love its consistent hot water delivery and space-saving design.
9.6

Exceptional

Our Rating

9.3
Easy installation

9.3
Efficient Energy Use

9.1
Temperature control
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Value for Money

2

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

Compact Design and Efficiency
Small, suitcase-sized unit that saves space and energy.

Ideal for Whole House Use
Perfect for families needing continuous hot water supply.

Highly Praised Continuous Hot Water
Never run out of hot water, even with high demand.
9.4

Excellent

Our Rating

9.5
Efficient Energy Use

9.3
Temperature control

8.2
Easy installation
3

Rheem
Rheem 18kW 240V Tankless Electric Water Heater, Gray
Main highlights

Efficient Water Heating
The Rheem 18kW Tankless Electric Water Heater offers on-demand hot water with advanced self-modulation for energy savings and efficiency.

Ideal for Small Homes
Best suited for small homes or apartments needing instant hot water without the bulk of traditional tanks.

Space-Saving Design
Customers praise its compact size, freeing up space while delivering reliable hot water.
9.3

Excellent

Our Rating

8.2
Easy installation

8.2
Temperature control

8.2
Efficient Energy Use
4

EcoSmart
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

38% Off
Main highlights

Endless Hot Water Efficiency
Provides consistent hot water with energy-efficient self-modulating technology, maintaining temperature within 1 degree.

Compact Space Saver
Ideal for small spaces, can be wall-mounted and fits point-of-use applications.

Energy Savings Praised
Customers appreciate reduced utility bills and efficient performance in small households.
9.2

Excellent

Our Rating

9.1
Efficient Energy Use

8.7
Easy installation

8.4
Temperature control
5

ECOTINYMACH

ECOTINYMACH 110V Tankless Water Heater Electric, 3000W Compact Water Heater Under Sink, Conveniently Convertible Between Fahrenheit and Celsius
8.9

Very Good

Our Rating
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6

Rheem
Rheem 11kW 240V Tankless Electric Water Heater
Main highlights

Digital Temperature Display
ON/OFF Dial Control with adjustable digital temperature display for precise control.

Ideal for Small Spaces
Perfect for small bathrooms and single shower use.

Consistent Hot Water
Praised for providing on-demand, consistent, and continuous hot water.
8.8

Very Good

Our Rating

9.5
Efficient Energy Use

8.2
Temperature control

8.0
worth the money
7

Orbek
18kW Tankless Water Heater Electric, ORBEK 240 Volt On Demand Instant Hot Water Heater, with LED Digital Display, ETL Certified, Up to 4.8 GPM for 2-3 Point of Use throughout the Whole House
Main highlights

Instant Hot Water Supply
Provides up to 4.8 GPM of endless hot water, ideal for 2-3 simultaneous uses.

Whole House Use
Perfect for households needing consistent hot water at multiple points.

Energy Efficiency
Highly praised for reducing electricity costs by up to 60%.
8.7

Very Good

Our Rating
8

Ranein
Ranein Electric Tankless Water Heater, 18kW 240V on Demand Instant Endless Water Heater with LED Temperature Display for Residential Whole House Shower, Space Saving

20% Off
Main highlights

Energy Efficiency and Cost Savings
99% thermal efficiency, saves 60% on heating costs, no preheating needed.

Ideal for Whole House Use
Suitable for 2-3 usage points, endless hot water for showers and more.

Highly Praised Performance
Great water pressure and temperature stability, no leaks reported.
8.6

Very Good

Our Rating

9.5
Temperature control

8.9
Efficient Energy Use
9

ECOTOUCH

Tankless Water Heater Electric, ECOTOUCH 6kW 240V Point of Use Water Heater on Demand Water Heaters Instant Hot Water Heaters ETL Certificated Self-modulation ECO60SE White
8.5

Good

Our Rating
10

ECOTOUCH
Electric Tankless Water Heater, ECOTOUCH 14kW Instant Hot Water Heater on Demand 240V Point of Use Hot Water Heater ETL Certificated Self-Modulation ECO140B Black
Main highlights

Instant and Endless Hot Water
The ECOTOUCH ECO140B delivers immediate hot water without preheating or temperature fluctuations.

Ideal for Small Spaces
Perfect for apartments, kitchens, and salons with its compact design.

Energy Efficiency Praised
Customers appreciate its precise temperature control and energy-saving features.
8.3

Good

Our Rating

9.5
Efficient Energy Use

9.3
Easy installation

9.1
Temperature control

10 Best rated electric tankless water heaters of 2025

1

Stiebel Eltron 239223 Tankless Water Heater – Tempra 29 Plus – Electric, On Demand Hot Water, Eco, White, 23

9.3

9.3

9.1

How do we rank?

How do we rank?

Analyzing top stores

2

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

9.5

9.3

8.2

3

Rheem 18kW 240V Tankless Electric Water Heater, Gray

8.2

8.2

8.2

4

EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

9.1

8.7

8.4

5

ECOTINYMACH 110V Tankless Water Heater Electric, 3000W Compact Water Heater Under Sink, Conveniently Convertible Between Fahrenheit and Celsius

6

Rheem 11kW 240V Tankless Electric Water Heater

9.5

8.2

8.0

7

18kW Tankless Water Heater Electric, ORBEK 240 Volt On Demand Instant Hot Water Heater, with LED Digital Display, ETL Certified, Up to 4.8 GPM for 2-3 Point of Use throughout the Whole House

8

Ranein Electric Tankless Water Heater, 18kW 240V on Demand Instant Endless Water Heater with LED Temperature Display for Residential Whole House Shower, Space Saving

9.5

8.9

9

Tankless Water Heater Electric, ECOTOUCH 6kW 240V Point of Use Water Heater on Demand Water Heaters Instant Hot Water Heaters ETL Certificated Self-modulation ECO60SE White

10

Electric Tankless Water Heater, ECOTOUCH 14kW Instant Hot Water Heater on Demand 240V Point of Use Hot Water Heater ETL Certificated Self-Modulation ECO140B Black

9.5

9.3

9.1

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