10 Best hot water heaters of 2025

Save up to 32% off

Best Choice

1

Ranein

Ranein Propane Gas Tankless Water Heater, Outdoor Max 7.4 GPM, 190,000 BTU Instant Hot Water Heater
9.9

Exceptional

Our Rating
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

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.
9.8

Exceptional

Our Rating

8.0
Easy installation

8.0
Temperature control
3

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.
9.7

Exceptional

Our Rating

9.1
Easy installation

8.9
Temperature control

8.7
worth the money
4

COSORI
Cosori Electric Kettle, No Plastic Filter & Spout, Stainless Steel Inner Lid, Tea Kettle & Hot Water Boiler For Coffee & Tea, Water Heater & Teapot, Automatic Shut Off, Black, 1.7L/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.
9.4

Excellent

Our Rating

9.9
Flavor

9.7
Simple to use

9.5
Thermal power
5

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.
9.3

Excellent

Our Rating

8.2
Tech Support

8.0
Easy installation

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

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

32% 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
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.
9.1

Excellent

Our Rating
8

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.
9.0

Excellent

Our Rating

9.5
Simple to use

9.1
Thermal power

8.9
Temperature control
9

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

11% 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.
8.9

Very Good

Our Rating

8.2
Easy installation

8.2
Temperature control

8.2
Efficient Energy Use
10

ECOTINYMACH

ECOTINYMACH Tankless Water Heater Electric 110V, 5000W Instant Water Heater Under Sink, Conversion Between Fahrenheit and Celsius, Remote Control
8.7

Very Good

Our Rating