9 Best tankless water heater natural gases of 2025

Save up to 60% off

Best Choice

1

Clicked 580 times in the last month

Rinnai
NEW Rinnai RXP199iN 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 Options
Installable indoors or outdoors with Versa Vent and Smart Sense gas system.

Ideal for High-Demand Homes
Supports up to 7 fixtures simultaneously with 11.1 GPM flow rate.

Exceptional Customer Support
Praised for knowledgeable and friendly service, ensuring user satisfaction.
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

Rheem
Rheem RTGH-95DVLN-3 RTGH Series 9.5 GPM 199,900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater Stainless Steel
Main highlights

High Flow Rate and Temperature Control
Offers 0.4 - 9.5 GPM with adjustable temperatures from 100 to 140F.

Ideal for Cold Climates
Performs efficiently even when inlet water temperature is low.

Energy Efficiency Praised by Users
Customers report significant gas bill savings and quick heating performance.
9.8

Exceptional

Our Rating

9.3
Temperature control

8.9
Easy installation

8.0
Tech Support
3

forimo
Tankless Water Heater Natural Gas,4.74GPM 18L Indoor,Instant Hot Gas Water Heater,Constant Natural Water Heater with Fahrenheit Digital Display,Multi-Protection (Black)
Main highlights

Instant Hot Water Supply
Provides 4.74 gallons per minute with steady temperature control.

Versatile Indoor Use
Ideal for homes, small cabins, and remote apartments.

Highly Rated Performance
Customers praise its instant heating and reliability.
9.5

Excellent

Our Rating

9.7
Easy installation

8.9
worth the money

8.9
Temperature control
4

Ranein

Ranein Natural Gas Tankless Water Heater, Indoor Max 7.4 GPM, 190,000 BTU Instant Hot Water Heater
9.4

Excellent

Our Rating
5

FOGATTI
FOGATTI Natural Gas Tankless Water Heater - Outdoor Installation Up to 8.1 GPM, Gray Instant Hot Water Heater - Instagas Comfort 180S Series
Main highlights

Unlimited Hot Water
The tankless design offers endless hot water without preheating.

Whole Family Use
Ideal for homes with 3-5 outlets, ensuring ample supply.

Excellent Customer Service
Praised for quick, effective support and problem resolution.
9.3

Excellent

Our Rating

8.4
Temperature control

8.2
Easy installation

8.0
Tech Support
See Today’s Deals & Prices
6

Rheem
Rheem RTG-70DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater, 7.0 GPM
Main highlights

Continuous Hot Water
Provides enough hot water for your entire house, even with multiple applications like a shower and dishwasher.

Ideal for Large Households
Perfect for families needing simultaneous hot water access without interruption.

Energy Efficiency Praised
High efficiency only runs when needed, saving energy and costs.
9.2

Excellent

Our Rating

8.0
Temperature control

8.0
Tech Support

8.0
Easy installation
7

Rheem
Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater, 7.0 GPM, Gray
Main highlights

Continuous Hot Water
Provides enough hot water for your entire house, even with multiple applications like shower and dishwasher.

Ideal for Large Households
Perfect for homes needing simultaneous water use, ensuring comfort without cold bursts.

Long-lasting with Maintenance
Customers praise its durability when properly maintained, lasting extremely long.
9.1

Excellent

Our Rating
8

Virego
18L Tankless Water Heater Natural Gas,68000 BTU Indoor Instant Hot Natural Gas Water Heater 4.74GPM,110V/120V 60HZ 3.6kW Constant Natural Water Heater with Fahrenheit Digital Display

16% Off
Main highlights

High Efficiency Performance
Delivers 4.74 gallons per minute with 68,000 BTU output, ensuring instant hot water with minimal gas consumption.

Versatile Use Cases
Perfect for home, RV, camping, and pet bathing, offering flexibility and convenience.

Customer Satisfaction
Praised for reliability and performance, achieving a 5-star rating from customers.
9.0

Excellent

Our Rating
9

Rinnai
Rinnai V75IN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation

60% Off
Main highlights

Key Features
Unlimited hot water with up to 7.5 GPM flow rate, energy and space-efficient design, enhanced scale detection for durability.

Ideal Use Cases
Perfect for homes with high hot water demand, serving up to 5 appliances simultaneously without compromising water pressure.

Customer Praise
Most reviews highlight the heater`s reliability, consistent hot water delivery, and energy savings as top benefits.
8.9

Very Good

Our Rating

8.7
Temperature control

8.7
Tech Support

8.7
Remote Control

9 Best tankless water heater natural gases of 2025

1

NEW Rinnai RXP199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU

How do we rank?

How do we rank?

Analyzing top stores

2

Rheem RTGH-95DVLN-3 RTGH Series 9.5 GPM 199,900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater Stainless Steel

9.3

8.9

8.0

3

Tankless Water Heater Natural Gas,4.74GPM 18L Indoor,Instant Hot Gas Water Heater,Constant Natural Water Heater with Fahrenheit Digital Display,Multi-Protection (Black)

9.7

8.9

8.9

4

Ranein Natural Gas Tankless Water Heater, Indoor Max 7.4 GPM, 190,000 BTU Instant Hot Water Heater

5

FOGATTI Natural Gas Tankless Water Heater - Outdoor Installation Up to 8.1 GPM, Gray Instant Hot Water Heater - Instagas Comfort 180S Series

8.4

8.2

8.0

6

Rheem RTG-70DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater, 7.0 GPM

8.0

8.0

8.0

7

Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater, 7.0 GPM, Gray

8

18L Tankless Water Heater Natural Gas,68000 BTU Indoor Instant Hot Natural Gas Water Heater 4.74GPM,110V/120V 60HZ 3.6kW Constant Natural Water Heater with Fahrenheit Digital Display

9

Rinnai V75IN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation

8.7

8.7

8.7

Sign up and get exclusive special deals