10 Best water heaters of 2025

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Rinnai
NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU
Main highlights

Versatile Installation
Install indoors or outdoors with Smart Sense gas control.

Ideal for Large Households
Supports up to 7 fixtures simultaneously with 11.1 GPM.

Endless Hot Water
Customers praise its ability to provide continuous hot water.
Key specs
- special features:Indoor/outdoor install
- wattage:N/A
- voltage:N/A
- maximum flow rate:11.1 GPM
- maximum temperature:N/A
9.9

Exceptional

Our Rating

8.0
Easy installation

8.0
Temperature control
- Amazon
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Value for Money

2

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.
9.8

Exceptional

Our Rating

8.2
Easy installation

8.2
Temperature control

8.2
Efficient Energy Use
- Amazon
- Walmart
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
9.7

Exceptional

Our Rating

9.1
Efficient Energy Use

8.7
Easy installation

8.4
Temperature control
- Amazon
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
- special features:Lightweight
- wattage:1440 watts
- voltage:120 Volts
- maximum flow rate:N/A
- maximum temperature:N/A
9.6

Exceptional

Our Rating

9.1
Easy installation

8.9
Temperature control

8.7
worth the money
- Amazon
- Walmart
5

Lakkzoom
Immersion Water Heater,with 304 Stainless Steel Cover Intelligent Temperature Control and UL Certification Portable Bucket Heater Heat 5 Gallons of Water in Minutes
Main highlights

Safe and Efficient Heating
1500W power heats 5 gallons quickly; UL certified for safety.

Versatile Use Cases
Ideal for RVs, small baths, emergency kits, and travel.

Reliable Temperature Control
Praised for accurate temperature control and easy operation.
Key specs
- special features:UL certified, portable
- wattage:1500W
- voltage:110V AC
- maximum flow rate:N/A
- maximum temperature:75°C (165°F)
9.5

Excellent

Our Rating

9.7
Simple to use

9.3
Heat transferring

8.2
Temperature control
- Amazon
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6

Ostutry

Ostutry Immersion Water Heater 1500W, Portable Submersible Water Heater with Thermostat for Bucket Bathtub Hot Tub, Real-Time Temperature Display & 15 Presets Control, Dry Burn Protection
9.3

Excellent

Our Rating
- Amazon
7

GE
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
9.2

Excellent

Our Rating

8.2
Tech Support

8.0
Easy installation

8.0
worth the money
- Amazon
- Walmart
8

Ranein

Ranein Propane Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater
9.1

Excellent

Our Rating
- Amazon
9

VEVOR

VEVOR Electric Mini-Tank Water Heater 4-Gallon Tank, 1440W Hot Water Boiler Storage, Safety Temperature Pressure Valve Easy Install, for Kichen Bathroom Restaurant, Shelf Wall Mounted

28% Off
9.0

Excellent

Our Rating
- Amazon
10

BISELONG
110V-120V 1440-1500W Small Under Sink Tank 2.5 Gallon Water Heater Hot Storage,Mini Instant Electric RV TR Trailer Kitchen Compact,Food Truck 2 PCs 16” Long 1/2”FIP Stainless Steel Hose (BI-2.5)
Main highlights

Energy Efficient and Compact
This 2.5-gallon mini-tank water heater offers 98% thermal efficiency, providing on-demand hot water while saving space under your sink.

Ideal for RVs and Small Spaces
Perfect for RVs, kitchens, and bathrooms, offering quick installation and reliable hot water supply without the need for large tanks.

Quick Heating and Easy Installation
Customers praise its fast water heating capabilities and straightforward installation, making it a user-friendly addition to any home.
Key specs
- special features:Energy saving, compact design
- wattage:1500.00
- voltage:120 Volts
- maximum flow rate:N/A
- maximum temperature:149
8.7

Very Good

Our Rating

8.9
Tech Support

8.9
materials Quality

8.4
Easy installation
- Amazon

10 Best water heaters of 2025

1

NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU

8.0

8.0

How do we rank?

How do we rank?

Analyzing top stores

2

Rheem 18kW 240V Tankless Electric Water Heater, Gray

8.2

8.2

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

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

Immersion Water Heater,with 304 Stainless Steel Cover Intelligent Temperature Control and UL Certification Portable Bucket Heater Heat 5 Gallons of Water in Minutes

9.7

9.3

8.2

6

Ostutry Immersion Water Heater 1500W, Portable Submersible Water Heater with Thermostat for Bucket Bathtub Hot Tub, Real-Time Temperature Display & 15 Presets Control, Dry Burn Protection

7

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

8

Ranein Propane Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater

9

VEVOR Electric Mini-Tank Water Heater 4-Gallon Tank, 1440W Hot Water Boiler Storage, Safety Temperature Pressure Valve Easy Install, for Kichen Bathroom Restaurant, Shelf Wall Mounted

10

110V-120V 1440-1500W Small Under Sink Tank 2.5 Gallon Water Heater Hot Storage,Mini Instant Electric RV TR Trailer Kitchen Compact,Food Truck 2 PCs 16” Long 1/2”FIP Stainless Steel Hose (BI-2.5)

8.9

8.9

8.4

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