10 Best electric tankless hot water heaters of 2025

Save up to 30% off

Best Choice

1

Clicked 505 times in the last month

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

12% Off
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.
9.9

Exceptional

Our Rating

8.2
Easy installation

8.2
Temperature control

8.2
Efficient Energy Use
How do we rank?

Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you

Careful review Our team ensures quality, value, and fit based on real user feedback

Trusted insights AI and human analysis guide your decisions, reflecting real user priorities
Real users impact

Thousands of users trust our site daily

Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
Value for Money

2

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

26% Off
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.
9.7

Exceptional

Our Rating

9.5
Efficient Energy Use

9.3
Temperature control

8.2
Easy installation
3

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

30% 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.
Key specs
- special features:Energy Efficient
- wattage:13-kilowatt
- voltage:N/A
- maximum flow rate:1.3 to 3.1 GPM
- maximum temperature:N/A
9.6

Exceptional

Our Rating

9.1
Efficient Energy Use

8.7
Easy installation

8.4
Temperature control
4

xwdzswgs

Tankless Water Heater Electric 110V, 3000W Instant Electric Water Heater, Under Sink Water Heater with Digital Display, On Demand Hot Water heater Electric for Kitchen Bathroom Washin
9.5

Excellent

Our Rating
5

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.
Key specs
- special features:LED Display
- wattage:11 KW
- voltage:240 Volts
- maximum flow rate:2.68 Gallons Per Minute
- maximum temperature:N/A
9.4

Excellent

Our Rating

9.5
Efficient Energy Use

8.2
Temperature control

8.0
worth the money
See Today’s Deals & Prices
6

Orbek

14kW Tankless Water Heater Electric, ORBEK 240 Volt On Demand Instant Hot Water Heater, with LED Digital Display, ETL Certified, Up to 3.38 GPM for 2-3 Point of Use
9.3

Excellent

Our Rating
7

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

18% 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.
Key specs
- special features:LED Display
- wattage:18 KW
- voltage:240 Volts AC
- maximum flow rate:4.3 GPM
- maximum temperature:131 Degrees Fahrenheit
9.2

Excellent

Our Rating

9.5
Temperature control

8.9
Efficient Energy Use
8

LAOSEP
Titan Electric Tankless Water Heater
Main highlights

Compact Design and Efficiency
The Titan Electric Tankless Water Heater is compact, efficient, and space-saving, making it ideal for modern homes.

Ideal for Medium-sized Households
Perfect for 3-bedroom, 2-bath homes, ensuring consistent hot water availability.

Praised for Energy Savings
Customers appreciate its energy efficiency, leading to lower electric bills compared to standard water heaters.
Key specs
- special features:Tankless Water Heater
- wattage:N/A
- voltage:220 Volts
- maximum flow rate:N/A
- maximum temperature:N/A
9.1

Excellent

Our Rating

8.7
Easy installation

8.2
worth the money

8.2
Temperature control
9

xwdzswgs
Tankless Water Heater Electric 110V, 3000W Instant Water Heater Under Sink, On Demand Hot Water Heater Electric with Digital Display, Electric Mini Water Heater for Kitchen Bathroom Washin
Main highlights

Instant Hot Water Availability
The heater delivers hot water in 3-5 seconds, eliminating waiting time.

Ideal for Compact Spaces
Perfect for installation under sinks in kitchens, bathrooms, and RVs.

Praised LED Display
Customers appreciate the easy-to-read LED display for temperature settings.
Key specs
- special features:Dry Combustion Protection, Lightweight, LED Display
- wattage:3000 watts
- voltage:110 Volts
- maximum flow rate:0.5GPM
- maximum temperature:131 F
9.0

Excellent

Our Rating
10

Generic
Generic Tankless Water Heater Electric, Instant Hot Water Heater Under Sink, 3000W 110V On Demand Mini Water Heater for RV Kitchen Bathroom, White
Main highlights

Instant Heating Efficiency
With 3000W power, this heater provides hot water instantly, adjustable between 68-122°F.

Space-Saving Design
Ideal for compact spaces like kitchens, bathrooms, RVs, ensuring convenience in limited areas.

Lukewarm Water Performance
Users appreciate its capability for providing lukewarm water, suitable for kitchen use.
Key specs
- special features:IPX4 waterproof, dry burning protection, leakage protection, overheating protection
- wattage:3000 watts
- voltage:110 Volts
- maximum flow rate:N/A
- maximum temperature:122 F
8.9

Very Good

Our Rating

8.0
Easy installation

8.0
Temperature control

10 Best electric tankless hot water heaters of 2025

1

Rheem 18kW 240V Tankless Electric Water Heater, Gray

8.2

8.2

8.2

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

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

9.1

8.7

8.4

4

Tankless Water Heater Electric 110V, 3000W Instant Electric Water Heater, Under Sink Water Heater with Digital Display, On Demand Hot Water heater Electric for Kitchen Bathroom Washin

5

Rheem 11kW 240V Tankless Electric Water Heater

9.5

8.2

8.0

6

14kW Tankless Water Heater Electric, ORBEK 240 Volt On Demand Instant Hot Water Heater, with LED Digital Display, ETL Certified, Up to 3.38 GPM for 2-3 Point of Use

7

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

8

Titan Electric Tankless Water Heater

8.7

8.2

8.2

9

Tankless Water Heater Electric 110V, 3000W Instant Water Heater Under Sink, On Demand Hot Water Heater Electric with Digital Display, Electric Mini Water Heater for Kitchen Bathroom Washin

10

Generic Tankless Water Heater Electric, Instant Hot Water Heater Under Sink, 3000W 110V On Demand Mini Water Heater for RV Kitchen Bathroom, White

8.0

8.0

Sign up and get exclusive special deals