10 Best hot water heaters of 2025

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1

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

10% 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
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Value for Money

2

GE Appliances
GE Appliances 10 Gallon Versatile Plug and Play Electric Water Heater with Adjustable Thermostat, Easily Installs Where You Want It, 120 Volt
Main highlights

Compact Design for Small Spaces
Ideal for kitchens, bathrooms, RVs, and cabins.

Perfect for On-Site Hot Water Use
Provides hot water where needed, including outdoor showers.

Highly Rated for Performance
Customers praise its capacity and efficiency for small spaces.
Key specs
- wattage:14.4 KW
- size:10 Gallon
- color:Gray
- style:Indoor Installation
- voltage:120 Volts
9.8

Exceptional

Our Rating

8.2
Tech Support

8.0
Easy installation

8.0
worth the money
3

COSORI
Cosori Electric Kettle, No Plastic Filter & Spout, Stainless Steel Inner Lid, 1.7L Tea Kettle & Hot Water Boiler For Coffee & Tea, Water Heater & Teapot, Automatic Shut Off, Black, 1500W
Main highlights

Efficient Boiling and Safety
The COSORI Electric Kettle offers rapid boiling, automatic shut-off, and boil-dry protection, ensuring efficiency and safety in every use.

Ideal for Quick Brews
Perfect for making tea, coffee, and quick meals, this kettle suits any busy kitchen.

Praised for Modern Design
Customers love the stylish design with blue LED lights, enhancing kitchen aesthetics.
9.5

Excellent

Our Rating

9.9
Flavor

9.7
Simple to use

9.5
Thermal power
4

Bosch
BOSCH Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted

14% Off
Main highlights

Convenient Point-of-Use
2.5-gallon mini-tank fits under sinks for instant hot water.

Versatile Installation Options
Ideal for small homes, garages, offices, and in-law suites.

Highly Efficient Performance
Customers praise thermal efficiency and fast recovery rate.
Key specs
- wattage:1440 watts
- special features:Lightweight
- voltage:120 Volts
- maximum flow rate:N/A
- maximum temperature:N/A
9.4

Excellent

Our Rating

9.1
Easy installation

8.9
Temperature control

8.7
worth the money
5

ERFEI

ERFEI 2.5 Gallons 110V 1500W Under Sink Instant Water Heater Mini Hot Water Heater Digital Display RV Hot Water Tank
9.3

Excellent

Our Rating
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6

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
- wattage:13-kilowatt
- special features:Energy Efficient
- voltage:N/A
- maximum flow rate:1.3 to 3.1 GPM
- maximum temperature:N/A
9.2

Excellent

Our Rating

9.1
Efficient Energy Use

8.7
Easy installation

8.4
Temperature control
7

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
- wattage:3000 watts
- special features:Dry Combustion Protection, Lightweight, LED Display
- voltage:110 Volts
- maximum flow rate:0.5GPM
- maximum temperature:131 F
9.1

Excellent

Our Rating
8

Chefman
Chefman Electric Kettle, 1.8L 1500W, Hot Water Boiler, Removable Lid for Easy Cleaning, Auto Shut Off, Boil-Dry Protection, Stainless Steel Filter, BPA Free, Borosilicate Glass Electric Tea Kettle

15% Off
Main highlights

Rapid Boiling Efficiency
Experience fast boiling with 1500W power, heating water in 3 minutes.

Perfect for Busy Lifestyles
Ideal for quick tea, coffee, and hot beverages on the go.

Automatic Shutoff Convenience
Praised for safety features like automatic shutoff and boil-dry protection.
Key specs
- Auto Shut-Off:Yes
- Heating Time:3 minutes
- Wattage:1500W
- Material:Borosilicate glass
- Finish:Brushed
8.9

Very Good

Our Rating

9.9
Flavor

9.7
Simple to use

9.7
Temperature control
9

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
- wattage:3000 watts
- special features:IPX4 waterproof, dry burning protection, leakage protection, overheating protection
- voltage:110 Volts
- maximum flow rate:N/A
- maximum temperature:122 F
8.8

Very Good

Our Rating

8.0
Easy installation

8.0
Temperature control
10

OVENTE
OVENTE Electric Kettle, 1.7L Fast Boiling Water Heater for Coffee or Tea, BPA Free with Water Level Gauge, Auto Shut-Off, Boil-Dry Protection, Indicator Light and Removable Filter, White KP72W
Main highlights

Fast Boiling Efficiency
Boils 1.7L of water quickly with 1100W power, saving energy.

Ideal for Quick Hot Water
Perfect for tea, coffee, and quick hot water needs.

Praised Auto Shut-Off
Customers love the auto shut-off and boil-dry protection.
Key specs
- Auto Shut-Off:Yes
- Heating Time:Boils in minutes
- Wattage:1100W
- Material:BPA-free
- Finish:default no selection value
8.7

Very Good

Our Rating

9.5
Simple to use

9.1
Thermal power

8.9
Temperature control

10 Best 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

GE Appliances 10 Gallon Versatile Plug and Play Electric Water Heater with Adjustable Thermostat, Easily Installs Where You Want It, 120 Volt

8.2

8.0

8.0

3

Cosori Electric Kettle, No Plastic Filter & Spout, Stainless Steel Inner Lid, 1.7L Tea Kettle & Hot Water Boiler For Coffee & Tea, Water Heater & Teapot, Automatic Shut Off, Black, 1500W

9.9

9.7

9.5

4

BOSCH Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted

9.1

8.9

8.7

5

ERFEI 2.5 Gallons 110V 1500W Under Sink Instant Water Heater Mini Hot Water Heater Digital Display RV Hot Water Tank

6

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

9.1

8.7

8.4

7

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

8

Chefman Electric Kettle, 1.8L 1500W, Hot Water Boiler, Removable Lid for Easy Cleaning, Auto Shut Off, Boil-Dry Protection, Stainless Steel Filter, BPA Free, Borosilicate Glass Electric Tea Kettle

9.9

9.7

9.7

9

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

10

OVENTE Electric Kettle, 1.7L Fast Boiling Water Heater for Coffee or Tea, BPA Free with Water Level Gauge, Auto Shut-Off, Boil-Dry Protection, Indicator Light and Removable Filter, White KP72W

9.5

9.1

8.9

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